SPECCHEK INSERT Size Thickness Width Height Clearances Top Side Bottom Type Flush Flush w/Lites Sketch Face P Lam Cover Transoms Construction 5 ply 7 ply Lumber Core Chip Core Mineral Core Hollow Core Match Edges

Machining Guarantee Premachined Life of job Mach. on job 1 year Bore cylinders 5 year Replace Replace/Rehang Louvers Who guarantees? Size Metal Wood Veneer Edge Treatment Glazing Lightproof Species Hardwood Tempered Fusible Cut Veneer Laminated Flitch # Same Species as Face Wire Label Match Adj. Bevel Beveled None Core Babbet Etched 20 min Rounded Colored 30 min Faces Square 34 min Cntr Bal Match Installation Astragal? 60 min Book Match By woodworker 90 min Run. Match Requirements By GC Pt. Grade Door schedule Touch-up Special Stn. Grade Elevations Hdwr. Instl. Core Blocks MDO Full size details Wiring Transoms Color samples Repairs by Veneer samples Corner samples Finish Finish by Color Stain Filler Glass Effect Primed

Lites Metal Wood Quantity Profile Glass by Glazed by

Pairs Matching Reqd. No match Packaging Poly bag Box Crate Pallet by floor Mark opening # Delivery Split delivery Off hr delivery Store off site To tailgate To floor Accepted by

ARCHITECTURAL FLUSH DOORS

ARCHITECTURAL WOODWORK QUALITY STANDARDS

SECTION 1300

Architectural Flush Doors Section 1300

Notice to Specifier When specifying flush wood doors, the AWI standards remain the “standards of the industry.” The design professional can specify with confidence using the AWI guidelines. The issue of “AA” vs. “A” face grade veneer standards, as defined by the Hardwood Plywood & Veneer Association (HPVA), has caused some confusion in the past. AWI-defined true architectural doors should not be confused with doors manufactured using standards established by the commercial door industry. AWI Premium Grade doors are specified when the highest degree of control over the quality of the execution of the design intent, and the quality of the materials, workmanship, and installation are required. This is often in conjunction with architectural paneling and related doors specified using the guidelines in Section 500 of the Quality Standards. The “building-standard” doors are usually more accurately specified as AWI Custom Grade (the high Grade used most of the time), and in the absence of specifications Custom Grade prevails. AWI Custom Grade standards are similar to those of many commercial door manufacturers. The AWI Custom Grade allows “A” grade veneer faces and running match (as opposed to “AA” grade veneer faces and balance match), and is suitable for most projects. 1300

Consult your AWI woodwork manufacturer early in the project for guidance.

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Section 1300 Guide Specifications

Part 1. GENERAL 1.1. SECTION INCLUDES A. Flush wood doors [and transom panels]; flush [and flush glazed] configuration; [fire rated] [and] [non-rated]. B. [Wood door louvers] 1.2. PRODUCTS INSTALLED BUT NOT FURNISHED UNDER THIS SECTION NOTE: LIST SECTIONS WHICH

SPECIFY PRODUCTS FOR INSTALLATION IN THIS SECTION.

• **EXAMPLE** SECTION 8700 - HARDWARE

1.3. RELATED SECTIONS A. Wood door frames B. Stile and rail wood doors C. Glazing D. Factory finishing E. Mechanical section(s) 1.4. REFERENCES A. Architectural Woodwork Institute AWI Quality Standards, current edition B. NFPA 80 - Fire Doors and Windows C. NFPA 252 - Fire Tests for Door Assemblies D. ASTM E152 - Fire Tests of Door Assemblies E. UL 10B - Fire Tests of Door Assemblies 1.5. SUBMITTALS A. Submit under provisions of Section [ ] B. Shop drawings: • Submit two copies; one of which will be returned with reviewed notations prior to commencement of work under this section • Indicate door opening criteria, elevations, sizes, types, swings, [undercuts required,] [special beveling,] [special blocking for hardware,] and cutouts for [glazing] [louvers] [and] [_____] • Indicate plans and elevations, materials, profiles, assembly methods, joint details, fastening methods, accessories, hardware, and schedule of finishes • Indicate door core material[s] and AWI construction type; [veneer species,] [high pressure decorative laminate selection,] [factory machining criteria,] [factory finishing criteria,] [and] [_____] C. Samples: NOTE: VARIATIONS IN NATURAL WOOD PRODUCTS WOOD IS

A NATURAL MATERIAL, WITH VARIATIONS IN COLOR, TEXTURE AND FIGURE.

THESE

VARIATIONS ARE INFLUENCED BY THE NATURAL GROWING PROCESS AND ARE UNCONTROLLABLE BY THE MANUFACTURER.

THE COLOR

OF WOOD WITHIN A TREE VARIES BETWEEN THE “SAPWOOD” (THE OUTER LAYERS OF

THE TREE WHICH CONTINUE TO TRANSPORT SAP) WHICH IS USUALLY LIGHTER IN COLOR AND THE “HEARTWOOD” (THE INNER LAYERS IN WHICH THE CELLS HAVE BECOME FILLED WITH NATURAL DEPOSITS). DIFFERENT GRAIN PATTERNS (FIGURES) WHICH INFLUENCE THE SELECTION PROCESS.

VARIOUS SPECIES PRODUCE THERE WILL BE VARIATIONS OF 1300

GRAIN PATTERNS WITHIN ANY SELECTED SPECIES.

THE MANUFACTURER CANNOT SELECT SOLID LUMBER CUTTINGS THEREFORE, COLOR, TEXTURE, AND GRAIN VARIATIONS WILL OCCUR IN THE FINEST ARCHITECTURAL WOODWORKING.

WITHIN A SPECIES BY GRAIN AND COLOR IN THE SAME MANNER IN WHICH VENEERS MAY BE SELECTED.

• Submit one or more 200 x 250 mm [8 x 10"] samples or door construction cut from [top] [bottom] corner, illustrating expected range of door finish color and/or grain • Submit one or more 200 x 250 mm [8 x 10"] samples illustrating expected range of [veneer color and/or grain] [high pressure decorative laminate color/pattern]

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1.6. QUALITY ASSURANCE NOTE: AWI CLASSIFIES FABRICATION QUALITY UNDER THREE GRADE NAMES: ECONOMY, CUSTOM, PREMIUM • ARCHITECTURAL WOODWORK, BY ITS VERY NATURE, IS USED PRIMARILY IN FINE QUALITY PROJECTS. THE THREE AWI GRADES ARE ECONOMY, CUSTOM, AND PREMIUM. • LIMITLESS DESIGN POSSIBILITIES ARE PART OF ALL THREE GRADES. A WIDE VARIETY OF LUMBER AND VENEER SPECIES, ALONG WITH OVERLAYS, HIGH PRESSURE LAMINATES, FACTORY FINISHES , AND PROFILES ARE AVAILABLE IN ALL THREE GRADES. •ECONOMY GRADE • THE GRADE WHICH DEFINES THE MINIMUM EXPECTATION OF QUALITY, WORKMANSHIP, MATERIALS, AND INSTALLATION WITHIN THE SCOPE OF AWI STANDARDS. •CUSTOM GRADE • THE GRADE SPECIFIED FOR MOST HIGH

QUALITY ARCHITECTURAL WOODWORK.

THIS GRADE

PROVIDES A WELL DEFINED DEGREE OF CONTROL OVER THE QUALITY OF WORKMANSHIP, MATERIALS AND INSTALLATION OF A PROJECT.

THE VAST MAJORITY OF ALL WORK COMPLIES WITH CUSTOM GRADE.

• PREMIUM GRADE • THE GRADE SPECIFIED WHEN THE HIGHEST DEGREE OF CONTROL OVER THE QUALITY OF THE EXECUTION OF THE DESIGN INTENT, AND THE QUALITY OF THE MATERIALS, WORKMANSHIP, AND INSTALLATION UNDER THIS STANDARD IS REQUIRED. USUALLY RESERVED FOR SPECIAL PROJECTS, OR FEATURE AREAS WITHIN A PROJECT. • PREVAILING GRADE • WHEN THE AWI QUALITY STANDARDS ARE REFERENCED AS A PART OF THE DOCUMENTS AND NO GRADE IS SPECIFIED, AWI CUSTOM GRADE STANDARDS WILL PREVAIL. • EXCEPTIONS TO GRADE • AWI RECOGNIZES THE

EXCEPTIONAL NATURE OF SOME PROJECTS.

CONTRACT

THESE STANDARDS ARE

INTENDED AS A GUIDE FROM WHICH THE DESIGN PROFESSIONAL IS ENCOURAGED TO EXPAND, OFTEN WITH THE ADVICE OF AN

AWI

MANUFACTURER.

THE RESULTING PRODUCTS OFTEN

EXCEED PARTS OF THIS

STANDARD IN

DESIGN, ENGINEERING, WORKMANSHIP, BEAUTY, AND FUNCTION.

A. Perform work in accordance with AWI [ ] Grade quality B. Work in this Section shall comply with the specified Grade(s) or Work and Section (s) of the current edition of the Architectural Woodwork Institute Quality Standards C. Woodwork manufacturers shall be certified by the AWI Quality Certification Program as competent to perform the work specified D. Certification shall be evidenced through the application of AWI Quality Certification labels and/or the issuance of an AWI letter of certification for the project NOTE: CALL AWI QUALITY CERTIFICATION PROGRAM (800) 449-8811 FOR PROJECT REGISTRATION NUMBER. THERE IS NO COST TO THE DESIGN PROFESSIONAL OR OWNER FOR REGISTRATION. IF REGISTRATION IS NOT ELECTED, SUBSTITUTE THE FOLLOWING FOR SECTION 1.6 ABOVE.

1.7. QUALIFICATIONS A. Contractors and their personnel engaged in the work shall be able to demonstrate successful experience with work of comparable extent, complexity and quality to that shown and specified. B. As documentation, manufacturer shall submit neutral Prequalification Form found in the Appendix in the AWI Quality Standards, current edition C. Manufacturer shall be a member in good standing of the Architectural Woodwork Institute 1.8. REGULATORY REQUIREMENTS 1300 A. Fire Door [and Panel] Construction: Conform to [ASTM E152] [NFPA 252] [UL 10B] B. Installed Fire Rated Door [and Transom Panel] Assembly: Conform to [NFPA 80] [_____] for fire-rated class [as scheduled] [ as indicated] 1.9. PRE-INSTALLATION CONFERENCE A. Convene [ ] week(s) prior to commencing work of this section, under provisions of Section [ ] 1.10. DELIVERY, STORAGE AND HANDLING A. Deliver, store and handle products to site under provisions of Section [ ] B. Protect units from moisture damage according to AWI Quality Standards, Section 1700, Installation C. Protect doors with resilient packaging [sealed with heat shrunk plastic]. Do not store in damp or wet areas; or in areas where sunlight might bleach veneer. Seal top and bottom edges upon receipt. Break seals on-site to permit ventilation 380

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1.11. FIELD MEASUREMENTS A. Verify that field measurements are as indicated on shop drawings 1.12. COORDINATION A. Coordinate work under provisions of Section [ ] B. Coordinate work with applicable mechanical trades and rough-in

Part 2. PRODUCTS 2.1. MANUFACTURERS NOTE: LIST ACCEPTABLE MANUFACTURERS FOR THIS

PROJECT

A. Acceptable manufacturers shall be members in good standing of the Architectural Woodwork Institute B. Acceptable manufacturers shall be certified by the AWI Quality Certification Program to perform work in this Section of the AWI Grade of Work specified 2.2. DOOR [AND TRANSOM PANEL] TYPES A. Flush Exterior Doors: [1-3/4] [2-1/4] inches ([44] [57] mm) thick; solid core construction, AWI type construction as indicated B. Flush Interior Doors: [1-3/4] [2-1/4] inches ([44] [57] mm) thick; solid core construction, AWI type construction [fire rated] [acoustic rated] as indicated C. [Transom Panels: [To match door] [_____], face veneer to [end] [_____] match] [fire rated] [acoustic rated] as indicated]] 2.3. DOOR [AND TRANSOM PANEL] CONSTRUCTION A. CORE (SOLID, NON-RATED): AWI SECTION 1300, Type [PC5 or PC7] [SLC5 or SLC7] [_____] B. CORE (SOLID, FIRE RATED): AWI SECTION 1300, Type [FD 1-1/2] [FD 1] [FD 3/4] [FD 1/2] [FD 1/3] C. CORE (SOLID, SPECIAL FUNCTION): AWI SECTION 1300, Type [SR-Sound Retardant (Acoustical)] [LL-Lead Lined] [ES-Electrostatic shield] D. CORE (HOLLOW): AWI SECTION 1300, Type [SHC-Standard] [IHC-Institutional] 2.4. FLUSH DOOR FACING A. Veneer Facing: _____ species wood [rotary] [plain] quarter] sliced; [book] [slip] matched leaves; [running] [balanced] [center balanced] faces, for [paint] [transparent] finish B. Plastic Laminate Facing: General Purpose GP50 [_____] finish; [_____] color, [_____] pattern by [_____] manufacturer C. Cross Banding behind Plastic Laminate: One ply of mat-formed one-piece industry standard crossband. 2.5. ADHESIVE A. Type I (waterproof) for Exterior Doors B. Type II (water resistant) for Interior Doors 2.6. ACCESSORIES A. Wood louvers as furnished by door manufacturer B. Metal louvers as specified in Section [10255] C. Glazing Stops: [Wood of same species as door facing when commonly available; compatible species for unusual veneers] [Wood with metal clips for rated doors [Rolled steel] [Aluminum] [channel] [_____] shape; [butted] 1300 [mitered] corners; prepared for countersink style [tamperproof] screws 2.7. FABRICATION A. Fabricate nonrated doors in accordance with AWI Quality Standards B. Fabricate fire-rated doors in accordance with AWI Quality Standards and to [UL] [Warnock-Hersey] requirements. Attach fire rating label to door C. Astragals for [fire-rated] double doors: [Steel,] [Wood,] [T] [_____] shaped, overlapping and recessed [at face edge] [at mid-door thickness], specifically for double doors D. Provide lock blocks at [lock edge] [and] [top of door for closer] for hardware reinforcement. E. Factory machine doors for finish hardware in accordance with hardware requirements and dimensions. Do not machine for surface hardware. [Provide solid blocking for through bolted hardware.] F. Factory pre-fit doors for frame openings and dimensions identified on shop drawings and schedules © 1999 Architectural Woodwork Institute - 7th Edition Quality Standards

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2.8. FACTORY FINISHING A. Finish work in the factory in accordance with AWI Quality Standards - Section 1500 B. Finish work to meet AWI [Economy] [Custom] [Premium] standards • * * * *[OR]* * * * B. Seal [, stain] and varnish exposed to view surfaces. Brush apply only B. Seal [, stain] and varnish semi-exposed to view surfaces. Brush apply only B. [Prime paint] [Seal] surfaces in contact with cementitious materials • **** **** C. List both the name and the number of the AWI Finish System (topcoats) to be used from Section 1500 of the AWI Quality Standards D. List the sheen desired from Section 1500 of the AWI Quality Standards E. List the effect desired from Section 1500 of the AWI Quality Standards F. List the special or extra steps and/or products to be used, such as bleach, distressing, filler, glaze, shading, stain, toner or washcoats 2.9. FABRICATION A. Fabricate to AWI [Economy] [Custom] [Premium] standards B. Apply plastic laminate finish in full uninterrupted sheets consistent with manufactured sizes. C. [Shop glaze glass materials using the Interior [Dry] [Combination] [Wet] method specified in Section 08800.]

Part 3. EXECUTION 3.1. EXAMINATION A. Verify adequacy of frame opening conditions B. Verify frame opening sizes and tolerances are acceptable and ready to receive this work 3.2. INSTALLATION A. Install work in accordance with AWI [Economy] [Custom] [Premium] Quality Standard B. Set and secure materials and components in place, plumb and level C. Install [fire-rated] [and] [non-rated] doors in accordance with [NFPA 80] and to [UL] [Warnock-Hersey] requirements D. Trim non-rated door width by cutting equally on both edges E. Trim door height by cutting bottom edges to a maximum of 3/4 inch (19 mm) [Trim fire door height at bottom edges only, and in accordance with fire rating requirements] F. Pilot drill screw and bolt holes G. Machine cut for hardware; Core for handsets and cylinders H. Coordinate installation of doors, frames, glass and glazing, louvers, accessories I. [Site glaze glass materials using the Interior [Dry] [Combination] [Wet] method specified in Section 08800] 3.3. ADJUSTING A. Conform to AWI Standards for fit and clearance tolerance B. Conform to AWI Standards and Tests for warp and telegraphing 1300 3.4. CLEANING A. Clean work under provisions of [01700] [ ]

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1300

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1300-G-4 Specification Requirements GRADE MUST BE SPECIFIED

General Information 1300-G-1 Scope This section defines the terminology, grades, and construction alternatives for flush wood doors as used primarily in commercial construction. Includes: Unique or special doors (AWI Premium Grade) “Building-standard” doors (AWI Custom Grade) Doors manufactured in conjunction with other architectural woodwork and millwork for a specific project. Excludes: Premanufactured doors (stock units) Commercial doors specified, manufactured, or purchased directly or without the benefit of selection and production under AWI quality standards. Flush doors are manufactured with a variety of core constructions and face combinations. These are described so that a specifier may select a type of door which will satisfy function and performance criteria.

1300-G-2 Warranties

1300-G-3 Exterior Doors Exterior Doors — Careful consideration must precede specification of wood doors for exterior use. (Refer to manufacturers’ written warranty.) Exterior doors should be water repellent treated at the factory after manufacturing. Protect doors according to manufacturers’ requirements. Wood doors should be protected from the sun and other weather elements by overhangs, deep recesses, etc. Medium density overlay faced doors should be used for severe exposure conditions. All surfaces of exterior doors should be primed with an exterior enamel primer, followed by a minimum of two additional coats of exterior enamel on all surfaces. 384

Premium Grade The Grade specified when the highest degree of control over the quality of workmanship, materials, installation and execution of the design intent is required. Usually reserved for special projects, or feature areas within a project.

Custom Grade The Grade specified for most conventional architectural woodwork. This Grade provides a well defined degree of control over the quality of workmanship, materials and installation of a project. The vast majority of all work produced is Custom Grade.

Economy Grade The Grade which defines the minimum expectation of quality, workmanship, materials, and installation within the scope of AWI Standards.

Prevailing Grade

Door warranties vary between manufacturers as to: (1) what is covered by the warranty; (2) duration of the warranty; (3) items that void the warranty, and (4) extent of replacement and cost coverage. Warranties vary between interior and exterior exposure. Most manufacturers do not warrant the following: (1) doors having different species, face materials or laminates on opposite sides; (2) doors with light or louver cutouts nearer than five inches from the door edge, or doors with less than five inches between cutouts for lights, louvers, locks, closures, and/or other hardware cutouts (six inches on fire rated doors). [Some manufacturers require larger measurements]; (3) appearance of doors with field-applied finishes; (4) fire rated doors in exterior locations; (5) doors with openings exceeding 40% of the door area or 1/2 door height, and (6) exterior doors not properly protected.

1300

AWI Architectural Woodwork Standards provide for three grades: Premium, Custom, and Economy.

When the AWI Quality Standards are referenced as a part of the contract documents and no Grade is specified, AWI Custom Grade standards will prevail.

1300-G-5 Materials Selection Specifiers need to determine and specify the following: A. Veneers for Transparent Finishes 1. Species: There are numerous foreign and domestic species available. Involve your AWI woodworker early in the design and selection process. 2. Matching: Many different visual effects can be obtained by face veneer matching. a. Appearance of individual pieces of veneer b. Matching between individual pieces of veneer c. Assembly of matched, spliced veneer on a door face d. Appearance of doors in pairs or sets e. Appearance of doors with transoms B. Materials for Opaque Finishes 1. Medium Density Overlay. This provides the optimum paintable surface for architectural doors. The thermosetting resin overlay is designed to take and hold paint. 2. Close Grain Hardwood. Extra preparation may be required by the finisher as there may be grain show-through, split veneer joints, and other wood characteristics in this Grade. 3. Mill Option. Face materials are determined by the manufacturer.

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Architectural Flush Doors Section 1300

C. High Pressure Decorative Laminates (HPDL) Virtually any high pressure decorative laminate color and texture can be used in the manufacture of architectural doors with the following cautions: • High gloss HPDL will highlight minor core and surface imperfections, often unacceptably. • HPDL doors are not recommended for exterior use due to the potential differentials in humidity between the faces of the door.

1300-G-6 Core Construction Basic Core Types The four most common core types are particleboard core, stave lumber (block) core, hollow core, and mineral core (fire-retardant door core). Specify either, or a combination of, solid core, hollow core, or mineral core (for rated doors), and if acoustical, or lead lining required. The requirements for each core type are illustrated on the “Standards” pages of this section. In the absence of clear specifications, the core shall be the option of the manufacturer. • When solid core is selected, specify one of the following: particleboard (PB), stave lumber (SLC), or structural composite lumber (SCL) [as a substitute for stave lumber]. • When hollow core, specify the core type required. Special Core Types Special cores for X-ray doors, acoustical doors, electrostatic shield doors, and others are available. Consult your AWI manufacturer for information.

1300-G-7 Core to Edge Assembly These standards provide for two types of assembly between the core and the vertical and horizontal edges in solid core doors: PC or SLC: Stiles and Rails securely glued to Core, sanded prior to application of faces FPC or FSLC: Stile and Rails not bonded to Core prior to application of faces

1300-G-8 Fire Ratings The Model Codes have established a fire door rating and operating classification system for use in protecting door openings in fire resistive rated wall constructions. All fire doors must meet the requirements of ASTM E152 and bear certifying labels of an independent testing agency approved by the building official.

1300-G-9 Special Function Doors Sound Retardant (Acoustical); Lead Lined (X-ray); and Electrostatic Shield doors are manufactured by some companies to meet these special needs. Refer to manufacturer’s literature for details. Transom panels are available and should be specified carefully, with particular attention to the meeting edge details and veneer match options.

1300-G-10 Specification Summary and Guide The following tables give a quick picture of reasonable expectations when doors are specified using the AWI Premium, Custom, and Economy Grades. A check mark (√) in the column indicates the “normal” condition. With the possible exception of regulated fabrication for fire-rated doors, most other conditions can be obtained through specification. Generally, where more than one method or material is listed for a grade, woodworkers will supply their choice from the alternatives. Involve your AWI manufacturer early in the process for both æsthetic and value engineering.

NOTE: AWI recommends limiting the use of Structural Composite Lumber (SCL) to interior applications.

1300

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1300-G-10 (cont.) Specification Summary and Guide AWI Grade --->

Premium

Custom

Economy

Face “A” HPVA Veneer Grade “AA” Veneer Cut (minimum 1/50" [0.5 mm] thick, glued in place, at 12% MC) Plain Sliced Quartered

√

“B”

√

Rift Comb Grain Rotary Veneer Leaf Match Book Slip Random End or Continuous

√ √

√

appropriate for Rift Red and White Oak, also useful in other species for effect (transoms)

(transoms)

Balance

(none required) √

Mill Option Veneer Face Match √ √

Running Center Balance

√

Mill Option Door-to-Door Match Pairs and/or Sets None required Opaque Laminate

√ Medium density overlay

√ Close grain hardwood

√ Mill option

.048"

.048"

Mill option

Mill option wood or SCL Same or compatible species as face, lumber, or veneer over hardwood or SCL

Mill option

Edge Material Description for Transparent Finish Veneer Doors Top and Bottom Vertical

Mill option hardwood Same species as face, lumber, or veneer over hardwood or SCL

Joints None allowed Material Description for Opaque Finish Doors

1300

Hinge edge only

Mill option

Top and Bottom

Mill option hardwood

Mill option wood or SCL

Mill option

Vertical Joints

Close grain hardwood None allowed

Mill option Hinge edge only

Mill option Mill option

Mill option wood or SCL

Mill option

Matching .048" laminate or finished compatible species lumber or veneer.

Mill option

Material Description for Laminate Clad Doors Top and Bottom Mill option hardwood Vertical, Woodgrain Patterns

Vertical, Solid Colors Joints

386

Mill option lumber or veneer

Matching .048" laminate or matching species lumber or veneer with transparent finish.

Matching .048" laminate; designated species lumber Matching .048" laminate, or lumber painted to match. or veneer with transparent finish, or painted to match. Painted hinge edge only None allowed

Mill option Mill option

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1300-G-10 (cont.) Specification Summary and Guide AWI Grade -->

Premium

Custom

Economy

√

√

√

Core Description Particleboard Block (stave lumber core - SLC) Structural Composite Lumber (SCL) Hollow Mineral (fire rated) Core/Edge Interface PC or SLC = Bonded FPC or FSLC = Non-Bonded Fire Rating

allowed as substitute for Block (SLC) for interior doors only, any Grade

Mineral Core REQUIRED in any Grade for Rated Doors 3/4 hour and above Must specify either Bonded or Non-Bonded in any Grade for every project, otherwise mill option within the AWI Grade of Work specified.

1/3 hour — 20 Minute 3/4 hour — 45 Minute 1 hour — 60 Minute

All fire-rated doors are as required by local codes. Establishment of the need and relevant ratings is the responsibility of the design professional. 20–minute wood frame information is presented in Section 900 of these Standards.

1-1/2 hour — 90 Minute Special Construction Sound Retardant Lead Lined Electrostatic Shield

Consult specific manufacturers’ data sheets for design and specification requirements. Establishment of the need and details is the reponsibility of the design professional.

1300

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1300-G-11 Appearance of Individual Pieces of Veneer Veneer Cuts The way in which a log is cut in relation to the annual rings determines the appearance of veneer. The beauty of veneer is in the natural variations of texture, grain, figure, color and the way it is assembled on a door face. Faces will have the natural variations in grain inherent in the species and cut. Natural variations of veneer grain and pattern will vary from these illustrations. These are representative drawings of real wood veneers. Involve your woodworker early in the design and selection process.

Flat Cut (Plain Sliced) Slicing is done parallel to a line through the center of the log. Cathedral and straight grained patterns result. The individual pieces of veneer are kept in the order they are sliced, permitting a natural grain progression when assembled as veneer faces. Flat Cut: Plain Sliced - Figure 1300-01

Quarter Cut A series of stripes is produced. These stripes vary in width from species to species. A natural distribution of Ray Fleck (flake) is a characteristic of this cut in red and white oak.

Rift Cut The cut slices slightly across the medullary rays, accentuating the vertical grain and minimizing the “flake.” Rift grain is restricted to red and white oak.

Comb Grain Limited availability. This is a rift cut veneer distinguished by the tightness and straitness of the grain along the entire length of the veneer. Slight angle in the grain is allowed. Comb grain is restricted to red and white oak. There are occasional cross bars and flake is minimal.

Rotary This cut follows the log’s annual growth rings, providing a generally bold random appearance. 1300

Quarter Cut Red and White Oak - Figure 1300-02

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Rift Cut Red and White Oak - Figure 1300-03

Rotary Cut - Figure 1300-04

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1300-G-12 Matching Between Individual Pieces of Veneer

Slip Match

Leaf Matching The way in which the individual cuts are placed next to each other during the fabrication of the veneer face is the next factor affecting the appearance of the doors. The type of match at the joint line must be specified. Natural variations in the leaves and the progression of the grain pattern across the face are the hallmarks of real wood doors.

Book Match

Slip Match - Figure 1300-06 Adjoining pieces of veneer are placed in sequence without turning over every other piece. The grain figure repeats, but joints won’t show mirrored effect. Slip matching is often used in quarter cut, rift cut, and comb grain veneers to minimize the barber pole effect.

Random Match

Book Match - Figure 1300-05 The most commonly used match in the industry. Every other piece of veneer is turned over so adjacent pieces are opened like two adjacent pages in a book. The veneer joints match and create a mirrored image pattern at the joint line, yielding a maximum continuity of grain. Book matching is used with rotary, plain sliced, quarter, rift cut, or comb grain veneers. Barber Pole Effect in Book Match Because the “tight” and “loose” faces alternate in adjacent pieces of veneer, they may accept stain differently, and this may result in a noticeable color variation called barber poling.

Random Match - Figure 1300-07 A random selection of individual pieces of veneer from one or more logs. Produces a “board like” appearance.

1300

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1300-G-13 Assembly of Spliced Veneer on a Face

Running Match Remainders

The type of “assembly match” must be specified to obtain a desired appearance. Any sequence matching from opening to opening must be specified. The following three face assembly methods give a wide range of flexibility and cost control to the design professional.

Balance Match

Book Match Running Match Running Match - Figure 1300-10 Nonsymmetrical appearance on any single door face. Veneer pieces of unequal width are common. Each face is assembled from as many veneer pieces as necessary.

Balance Match Balance Match - Figure 1300-08 Symmetrical appearance. Each face is assembled from an even or odd number of pieces of uniform width before trimming. This match reduces veneer yield.

1300-G-14 Doors in Pairs or Sets Pair Match

Center Balance Match

Balance and Center Match Center Balance Match - Figure 1300-09 Symmetrical appearance. Each face is assembled from an even number of veneer pieces of uniform width before trimming. Thus, there is a veneer joint in the center of the panel. This match further reduces veneer yield.

Door Pair Match - Figure 1300-11 Doors may be (and in some grades, must be) specified as pair 1300 matched where appropriate. Note to Specifiers: The illustration shows book-matched, center balance matched faces. The Standards do not require this condition. A review of the previous few pages and careful specification will avoid misunderstandings.

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Architectural Flush Doors Section 1300

Set Match

Door Set Match - Figure 1300-12 Doors hung in adjacent sets may be (and in some grades, must be) specified as set matched where appropriate. Note to Specifiers: The illustration shows book-matched, center balance matched faces. The Standards do not require this condition. A review of the previous few pages and careful specification will avoid misunderstandings.

1300-G-15 Doors with Transoms

Continuous Match

1300

Door Transoms - Figure 1300-13 The use of the transom increases the apparent height of the wood door and often enhances the appearance of the opening. The type of match should be specified, and a slight misalignment of veneer grain may occur between the transom and the door. Industry practice allows a variation in grain alignment from side to side of 3/8" on a single door, and 1/2" on pairs of doors with a single transom. Tighter tolerances must be specified as a part of AWI Premium Grade doors. 392

Continuous Match - Figure 1300-14 Provides optimum veneer utilization as each single piece of veneer extends from the top of the transom to the bottom of the door. Available veneer length in the species may limit this option.

© 1999 Architectural Woodwork Institute - 7th Edition Quality Standards

Architectural Flush Doors Section 1300

End Match

No Match

1300 End Match - Figure 1300-15 A single piece of veneer extends from the bottom to the top of the door with a mirror image at the transom.

No Match - Figure 1300-16 Used only in AWI Economy Grade doors.

© 1999 Architectural Woodwork Institute - 7th Edition Quality Standards

393

Architectural Flush Doors Section 1300

1300-G-16 Hardwood Veneer Face Grade Summary

FLAKE, RAY - Portion of a ray as it appears on the quartered surface. Flake can be a dominant appearance feature in Oak and is sometimes referred to as fleck.

Read Section 200 for the complete description of veneer face grades. This glossary (reprinted with permission from the Hardwood Plywood & Veneer Association (HPVA), clarifies the definition of terms used in the following Tables:

GRAIN - The direction, size, arrangement, and appearance of the fibers in wood or veneer

BACK - The side reverse to the face of a panel, or the poorer side of panel in any grade calling for a face and a back. BALANCE MATCHED - Two or more veneer components or leaves of equal size (prior to edge trimming) to make up a single face. BARK POCKET - Comparatively small area of bark around which normal wood has grown. BLENDING - Color change that is detectable at a distance of 6' to 8', but which does not seriously detract from the overall appearance of the panel. BURL - A swirl or twist in the grain of the wood that usually occurs near a knot or crotch but does not contain a knot. CENTER MATCH - An even number of veneer components or leaves of equal size (prior to edge trimming) matched with a joint in the center of the panel to achieve horizontal symmetry. CHECKS - Small slits running parallel to grain of wood, caused chiefly by strains produced in seasoning. COMB GRAIN - A quality of rift veneer with exceptionally straight grain and closely spaced growth increments. COMPONENT (of face) - An individual piece of veneer that is jointed to other pieces to achieve a full length and width face. Terms used interchangeably with component in the context of face are piece and leaf. CORE - Also referred to as “center.” The innermost portion of plywood assemblies. May be particleboard, fiberboard, hardboard, veneer, or sawn lumber. CROSSBAR - Type of figure or irregularity of grain resembling a dip in grain running at right angles, or nearly so, to the length of the veneer component. DECAY - The decomposition of wood substance by fungi. DOZE - (synonymous with DOTE) A form of incipient decay characterized by a dull and lifeless appearance of the wood, 1300 accompanied by a lack of strength and softening of the wood substance. FACE - The better side of any panel in which the outer plies are of different veneer grades. Also either side of a panel in which there is no difference in veneer grades. FEW - A small number without regard to their arrangement in the panel. FIGURE - The pattern produced in a wood surface by annual growth rings, rays, knots, deviations from natural grain such as interlocked and wavy grain, and irregular coloration.

394

GRAIN SLOPE - Expression of the angle of the grain to the long edges of the veneer component. GRAIN SWEEP - Expression of the angle of the grain to the long edges of the veneer component over the area extending one-eighth of the length of the piece from the ends. GUM POCKETS - Well-defined openings between rings of annual growth, containing gum or evidence of prior gum accumulations. GUM SPOTS - Gum or resinous material of color spots caused by prior resin accumulations sometimes found on panel surfaces. HAIRLINE - Thin, perceptible line showing at the joint of two pieces of wood. HEARTWOOD - The nonactive center of a tree, generally distinguishable from the outer portion (sapwood) by its darker color. INCONSPICUOUS - Barely detectable with the naked eye at a distance of 6' to 8'. KNOT - Cross-section of tree branch or limb with grain usually running at right angles to that of the piece of wood in which it occurs. KNOTS, BLENDING PIN - Sound knots 1/4" or less in diameter that do not contain dark centers. Blending pin knots are detectable at a distance of 6' to 8' and do not seriously detract from the overall appearance of the panel. KNOTS, PIN - Sound knots 1/4" or less in diameter containing dark centers. KNOTS, SOUND, TIGHT - Knots that are solid across their face and fixed by growth to retain their place. PLAIN SLICED - Veneer sliced parallel to the pith of the log and approximately tangent to the growth rings to achieve flat cut veneer. Plain sliced veneer can be cut using either a horizontal or vertical slicing machine, or by the half-round method using a rotary lathe. PLEASING MATCHED - A face containing components that provide a pleasing overall appearance. The grain of the various components need not be matched at the joints. Sharp color contrasts at the joints of the components are not permitted. QUARTERED - Veneer produced by cutting in a radial direction to the pith to the extent that ray flake is produced, and the amount may be unlimited. REPAIRS - A patch, shim, or filler material inserted and/or glued into veneer or a panel to achieve a sound surface. REPAIRS, BLENDING - Wood or filler insertions similar in color to adjacent wood so as to blend well.

© 1999 Architectural Woodwork Institute - 7th Edition Quality Standards

Architectural Flush Doors Section 1300

RIFT CUT - Veneer produced by cutting at a slight angle to the radial to produce a quartered appearance without excessive ray flake. ROTARY CUT - Veneer produced by centering the entire log in a lathe and turning it against a broad cutting knife. ROUGH CUT - Irregular shaped areas of generally uneven corrugation on the surface of veneer. SAPWOOD - The living wood of lighter color occurring in the outer portion of a tree. SHAKE - A separation along the grain of wood in which the greater part occurs between the rings of annual growth. SLIGHT - Visible on observation, but does not interfere with the overall æsthetic appearance with consideration of the applicable grade of the panel. STREAKS, MINERAL - Natural discolorations of the wood substance. WELL MATCHED - Wood members selected so that the color of adjacent members is similar and nearly uniform in appearance. The grain figure or other natural character markings shall be similar in character and appearance. Members with only flat grain should not be permitted adjacent to members with only vertical grain. Members with mixed grain are only permitted adjacent to members with similar grain at the adjacent edge.

1300

© 1999 Architectural Woodwork Institute - 7th Edition Quality Standards

395

Architectural Flush Doors Section 1300

1300-G-17 Hardwood Veneer Face Grade Summary Tables (adapted from HPVA with permission) Species Ash, Birch, Maple, Poplar Cut Plain sliced, Quarter, Rotary Grade Description

AA

A

B

White

Red or Brown

Natural

White

Red or Brown

Natural

White

Red or Brown

Natural

Sapwood

Yes

No

Yes

Yes

No

Yes

Yes

No

Yes

Heartwood

No

Yes

Yes

No

Yes

Yes

No

Yes

Yes

Color and Matching

Color Streaks or Spots Color Variation Sharp Color Contrasts at Joints

Slight Slight

Slight Yes

Slight

Yes

Yes

Yes

Yes

No

No

No

Yes

Yes

Specify

Type of Matching Book Matched Slip Matched

Specify

Specify

Specify

Pleasing Matched

not applicable

not applicable

Yes

Random Matched

Specify

Specify

Specify

End Matched

Specify

Specify

Specify

Nominal Minimum Width of Face Components

Plain-Sliced — 6" [152 mm]

Plain-Sliced — 5" [127 mm]

Plain-Sliced — 3" [76 mm]

Quarter — 3" [76 mm]

Quarter — 3" [76 mm]

Quarter — 3" [76 mm]

Rotary — 6" [152 mm]

Rotary — 5" [127 mm]

Rotary — 4" [102 mm]

1 per 5 sq. ft. maximum 6 in any 32 sq. ft. contiguous

1 per 3 sq. ft. maximum 10 in any 32 sq. ft. contiguous

1 per 2 sq. ft. maximum 16 in any 32 sq. ft. contiguous

1/4" [6 mm]

3/8" [10 mm]

1/2" [13 mm]

1 per 8 sq. ft. maximum 4 in any 32 sq. ft. contiguous

1 per 4 sq. ft. maximum 8 in any 32 sq. ft. contiguous

1/8" [3 mm]

1/8" [3 mm]

1/4" [6 mm]

1/4" [6 mm]

Natural Characteristics Small Conspicuous Burls & Pin Knots - Combined Avg. Number Conspicuous Burls - Max. Size Conspicuous Pin Knots - Avg. Number Max. Pin Knot Size - Dark Part

No

Max. Pin Knot Size - Total Scattered Sound and Repaired Knots - Combined Avg. Number Maximum Size - Sound

1300

1 per 8 sq. ft. maximum 4 in any 32 sq. ft. contiguous No

No

3/8" [10 mm]

Maximum Size - Repaired

1/8" [3 mm]

Average Number - Repaired

1 per 8 sq. ft.

Mineral Streaks

No

Slight

Slight

Bark Pockets

No

No

Few to 1/8" x 1"

Worm Tracks

No; Ash slight

No; Ash slight

Slight; Ash yes

Vine Marks

No

Slight

Yes

Cross Bars

Slight

Slight

Yes

No

No

Slight

Two 1/32" x 3"

Two 1/16" x 6"

Four 1/8" x 8"

Very small blending

Small blending

Blending

Manufacturing Characteristics Rough Cut Blended Repaired Tapering Hairline Splits Repairs Special Characteristics Unfilled worm holes, open splits, open joints, open bark pockets, shake, or doze not permitted in above grades. Under Color and Matching: Red available in Birch and some Maple only, Brown available in Ash only.

396

© 1999 Architectural Woodwork Institute - 7th Edition Quality Standards

Architectural Flush Doors Section 1300

1300-G-17 (cont.) Hardwood Veneer Face Grade Summary Tables (adapted from HPVA with permission) Species African and Honduras Mahogany, Lauan, Meranti Cut Plain sliced, Quarter, Rotary Grade Description

AA*

A*

B

Sapwood

No

No

No

Heartwood

Yes

Yes

Yes

Color Streaks or Spots

Slight

Slight

Occasional

Color Variation

Slight

Slight

Moderate

No

No

No

Book Matched

Yes

Yes

Specify

Slip Matched

Specify

Specify

Specify

Pleasing Matched

not applicable

not applicable

Yes

Random Matched

Specify

Specify

Specify

Color and Matching

Sharp Color Contrasts at Joints Type of Matching

End Matched Nominal Minimum Width of Face Components

Specify

Specify

Specify

Plain-Sliced — 6" [152 mm]

Plain-Sliced — 5" [127 mm]

Plain-Sliced — 3" [76 mm]

Quarter — 3" [76 mm]

Quarter — 3" [76 mm]

Quarter — 3" [76 mm]

Rotary — 6" [152 mm]

Rotary — 5" [127 mm]

Rotary — 4" [102 mm]

1 per 5 sq. ft. maximum 6 in any 32 sq. ft. contiguous

1 per 3 sq. ft. maximum 10 in any 32 sq. ft. contiguous

1 per 2 sq. ft. maximum 16 in any 32 sq. ft. contiguous

1/4" [6 mm]

3/8" [10 mm]

1/2" [13 mm]

1 per 8 sq. ft. maximum 4 in any 32 sq. ft. contiguous

1 per 4 sq. ft. maximum 8 in any 32 sq. ft. contiguous

1/8" [3 mm]

1/8" [3 mm]

1/4" [6 mm]

1/4" [6 mm]

Natural Characteristics Small Conspicuous Burls & Pin Knots - Combined Avg. Number Conspicuous Burls - Max. Size Conspicuous Pin Knots - Avg. Number Max. Pin Knot Size - Dark Part

No

Max. Pin Knot Size - Total Scattered Sound and Repaired Knots - Combined Avg. Number Maximum Size - Sound

1 per 8 sq. ft. maximum 4 in any 32 sq. ft. contiguous No

No

3/8" [10 mm]

Maximum Size - Repaired

1/8" [3 mm]

Average Number - Repaired

1 per 8 sq. ft.

Mineral Streaks

No

Slight

Occasional

Bark Pockets

No

No

Few to 1/8" x 1"

Worm Tracks*

No

No

Slight

Vine Marks

No

Slight

Yes

Cross Bars

Occasional

Occasional

Yes

No

No

Slight

Two 1/32" x 3"

Two 1/16" x 6"

Four 1/8" x 8"

Very small blending

Small blending

Blending

1300

Manufacturing Characteristics Rough Cut Blended Repaired Tapering Hairline Splits Repairs Special Characteristics Unfilled worm holes, open splits, open joints, open bark pockets, shake, or doze not permitted in above grades. * In Lauan and Meranti, Grade AA will permit slight worm tracks, and Grade A will permit occasional worm tracks.

© 1999 Architectural Woodwork Institute - 7th Edition Quality Standards

397

Architectural Flush Doors Section 1300

1300-G-17 (cont.) Hardwood Veneer Face Grade Summary Tables (adapted from HPVA with permission) Species Red and White Oak Cut Plain sliced, Quarter, Rift, Rotary Grade Description

AA Red

White

Red

White

Red**

Sapwood

No

No

5%

Yes*

10-20%

Yes

Heartwood

Yes

Yes

Yes

Yes

Yes

Yes

Color Variation Sharp Color Contrasts at Joints



B

Color and Matching

Color Streaks or Spots



A



Yes

Yes

Yes

Slight

Slight

Yes

No

No

No

White

Type of Matching Book Matched

Yes

Yes

Specify

Specify

Specify

Specify

Pleasing Matched

Not applicable

Not applicable

Yes

Random Matched

Specify

Specify

Specify

End Matched

Specify

Specify

Specify

Slip Matched

Nominal Minimum Width of Face Components

Plain-Sliced — 6" [152 mm]

Plain-Sliced — 5" [127 mm]

Plain-Sliced — 3" [76 mm]

Quarter — 3" [76 mm]

Quarter — 3" [76 mm]

Quarter — 3" [76 mm]

Rotary — 6" [152 mm]

Rotary — 5" [127 mm]

Rotary — 4" [102 mm]

1 per 2-2/3 sq. ft. maximum 12 in any 32 sq. ft. contiguous

1 per 1-1/3 sq. ft. maximum 24 in any 32 sq. ft. contiguous

Natural Characteristics Small Conspicuous Burls & Pin Knots - Combined Avg. Number Conspicuous Burls - Max. Size

1 per 4 sq. ft. maximum 8 in any 32 sq. ft. contiguous 1/4" [6 mm]

Conspicuous Pin Knots - Avg. Number Max. Pin Knot Size - Dark Part

No

Max. Pin Knot Size - Total

3/8" [10 mm]

1/2" [13 mm]

1 per 3 sq. ft. maximum 10 in any 32 sq. ft. contiguous

1 per 2 sq. ft. maximum 16 in any 32 sq. ft. contiguous

1/8" [3 mm]

1/8" [3 mm]

1/4" [6 mm]

Scattered Sound and Repaired Knots - Combined Avg. Number Maximum Size - Sound

1/4" [6 mm] 1 per 8 sq. ft. maximum 4 in any 32 sq. ft. contiguous

No

No

Maximum Size - Repaired

3/8" [10 mm] 1/8" [3 mm]

Average Number - Repaired

1 per 8 sq. ft.

Mineral Streaks

No

Slight, Blending

Few to 12"

Bark Pockets

No

No

Few to 1/8" x 1"

Worm Tracks

No

No

Slight

Vine Marks

No

Slight

Yes

Cross Bars

Slight

Slight

Yes

No

No

Slight

Two 1/32" x 3"

Two 1/16" x 6"

Four 1/8" x 8"

Very small blending

Small blending

Blending

Slight, blending

Slight, blending

Slight, blending

Manufacturing Characteristics

1300

Rough Cut Blended Repaired Tapered Hairline Splits Repairs Special Characteristics Ray Fleck*** Rift and Comb Grain

Rift permits 1" in 12" max. grain slope; 2-1/2" in 12" max. grain sweep; occasional flake not to exceed 3/8" in width. Comb grain permits 1/2" in 12" max. grain slope; 1/2" in 12" max. grain sweep; occasional flake not to exceed 3/32" in width.

Unfilled worm holes, open splits, open joints, open bark pockets, shake or doze not permitted in above grades. * Sap allowed in rotary only unless otherwise specified. ** 10% sap allowed in Rift, Comb and Plain-Sliced; 20% sap allowed in Rotary. *** In the absence of specific flitch selection by owner’s representative, the natural distribution of ray fleck in quarter cut Red and White Oak is permitted.

398

© 1999 Architectural Woodwork Institute - 7th Edition Quality Standards

Architectural Flush Doors Section 1300

1300-G-17 (cont.) Hardwood Veneer Face Grade Summary Tables (adapted from HPVA with permission) Species Pecan and Hickory Cut Plain sliced, Rotary Grade Description

AA

A

B

Sapwood

Yes

Yes

Yes

Heartwood

Yes

Yes

Yes

Color Streaks or Spots

Yes

Yes

Yes

Color Variation

Yes

Yes

Yes

Sharp Color Contrasts at Joints

No

No

No

Color and Matching

Type of Matching Book Matched Slip Matched Pleasing Matched

Yes

Yes

Specify

Specify

Specify

Specify

not applicable

not applicable

Yes

Random Matched

Specify

Specify

Specify

End Matched

Specify

Specify

Specify

Nominal Minimum Width of Face Components

Plain-Sliced — 6" [152 mm]

Plain-Sliced — 5" [127 mm]

Plain-Sliced — 3" [76 mm]

Quarter

Quarter

Quarter

not applicable

not applicable

not applicable

Rotary — 6" [152 mm]

Rotary — 5" [127 mm]

Rotary — 4" [102 mm]

1 per 1 sq. ft. maximum 32 in any 32 sq. ft. contiguous

2 per 1 sq. ft. maximum 64 in any 32 sq. ft. contiguous

No limit

1/4" [6 mm]

3/8" [10 mm]

1/2" [13 mm]

1 per 2 sq. ft. maximum 16 in any 32 sq. ft. contiguous

2 per 1 sq. ft. maximum 64 in any 32 sq. ft. contiguous

No limit

Max. Pin Knot Size - Dark Part

1/8" [3 mm]

1/8" [3 mm]

1/8" [3 mm]

Max. Pin Knot Size - Total

1/4" [6 mm]

1/4" [6 mm]

Natural Characteristics Small Conspicuous Burls & Pin Knots - Combined Avg. Number Conspicuous Burls - Max. Size Conspicuous Pin Knots* - Average Number

Scattered Sound and Repaired Knots - Combined Avg. Number Maximum Size - Sound

1/4" [6 mm] 1 per 8 sq. ft. maximum 4 in any 32 sq. ft. contiguous

No

No

3/8" [10 mm]

Maximum Size - Repaired

1/8" [3 mm]

Average Number - Repaired

1 per 8 sq. ft.

Mineral Streaks

Slight

Slight

Yes

Bark Pockets

No

Small, occasional

Few to 1/4" x 2"

Worm Tracks

No

Slight

Few

Vine Marks

Slight

Occasional

Yes

Cross Bars

Slight

Occasional

Yes

No

No

Slight

Two 1/32" x 3"

Two 1/16" x 6"

Four 1/8" x 8"

Very small blending

Small blending

Blending

No

Slight

Yes

Manufacturing Characteristics Rough Cut Blended Repaired Tapering Hairline Splits Repairs

1300

Special Characteristics Bird Peck** Knife Marks

Knife marks may occur in these high-density species.

Unfilled worm holes, open splits, open joints, open bark pockets, shake or doze not permitted in above grades. * For Pecan and Hickory, conspicuous pin knots means sound knots 1/4" or less in diameter with dark centers larger than 1/16". Inconspicuous pin knots are sound knots 1/4" or less in diameter with dark centers 1/16" or less and are permitted in all grades of Pecan and Hickory. ** Bird Peck may be specified to achieve rustic appearance.

© 1999 Architectural Woodwork Institute - 7th Edition Quality Standards

399

Architectural Flush Doors Section 1300

1300-G-17 (cont.) Hardwood Veneer Face Grade Summary Tables (adapted from HPVA with permission) Species Walnut, Butternut, Cherry Cut Plain sliced, Rotary Grade Description

AA

A

B

Sapwood

No

No *

No *

Heartwood

Yes

Yes

Yes

Color Streaks or Spots

Slight

Slight

Yes

Color Variation

Slight

Slight

Yes

No

No

No

Color and Matching

Sharp Color Contrasts at Joints Type of Matching Book Matched

Yes

Yes

Specify

Specify

Specify

Specify

Pleasing Matched

Not applicable

Not applicable

Yes

Random Matched

Specify

Specify

Specify

End Matched

Specify

Specify

Slip Matched

Nominal Minimum Width of Face Components

Specify

Plain-Sliced — 6" [152 mm]

Plain-Sliced — 5" [127 mm]

Plain-Sliced — 3" [76 mm]

Quarter — 3" [76 mm]

Quarter — 3" [76 mm]

Quarter — 3" [76 mm]

Rotary — 6" [152 mm]

Rotary — 5" [127 mm]

Rotary — 4" [102 mm]

1 per 1-1/3 sq. ft. maximum 24 in any 32 sq. ft. contiguous

2 per 1 sq. ft. maximum 64 in any 32 sq. ft. contiguous

Natural Characteristics Small Conspicuous Burls & Pin Knots - Combined Avg. Number Conspicuous Burls - Max. Size

1 per 4 sq. ft. maximum 8 in any 32 sq. ft. contiguous 1/4" [6 mm]

3/8" [10 mm]

1/2" [13 mm]

1 per 5 sq. ft. maximum 6 in any 32 sq. ft. contiguous

1 per 2 sq. ft. maximum 16 in any 32 sq. ft. contiguous

1 per 1 sq. ft. maximum 32 in any 32 sq. ft. contiguous

Max. Pin Knot Size - Dark Part

1/8" [3 mm]

1/8" [3 mm]

1/8" [3 mm]

Max. Pin Knot Size - Total

1/4" [6 mm]

1/4" [6 mm]

Conspicuous Pin Knots** - Average Number

Maximum Size - Sound

1/4" [6 mm] 1 per 8 sq. ft. maximum 4 in any 32 sq. ft. contiguous

Scattered Sound and Repaired Knots - Combined Avg. Number No

3/8" [10 mm]

No

Maximum Size - Repaired

1/8" [3 mm]

Average Number - Repaired

1 per 8 sq. ft.

Mineral Streaks

Slight

Slight

Yes

Bark Pockets

No

No

Few to 1/8" x 1"

Worm Tracks

No

No

Slight

Vine Marks

Slight

Occasional

Yes

Cross Bars

Slight

Occasional

Yes

No

No

Slight

Two 1/32" x 3"

Two 1/16" x 6"

Four 1/8" x 8"

Very small, blending

Small, blending

Blending

Occasional gum spots permitted in Cherry

Occasional gum spots permitted in Cherry

Gum spots and gum streaks permitted in Cherry

Manufacturing Characteristics Rough Cut

1300

Blended Repaired Tapering Hairline Splits Repairs Special Characteristics Gum Spots

Unfilled worm holes, open splits, open joints, open bark pockets, shake or doze not permitted in above grades. * Sap may be permitted in A and B grades, the percentage to be agreed to by the buyer and seller in advance. ** For Walnut and Cherry, conspicuous pin knots means sound knots 1/4" [6 mm] or less in diameter with dark centers larger than 1/16" [1 mm]. Inconspicuous pin knots are sound knots 1/4" [6 mm] or less in diameter with dark centers of 1/16" [1 mm] or less and are permitted in all grades of Walnut and Cherry.

Other species not specifically listed should be as agreed to by the buyer and seller. These characteristics may be more or less restrictive than those outlined in the previous tables. 400

© 1999 Architectural Woodwork Institute - 7th Edition Quality Standards

Architectural Flush Doors Section 1300

1300-G-18 Construction Details General Moulding Requirements

Glazing Options

Species shall match or be compatible with face veneer or laminate. Specify transparent or opaque finish. Moulding shall be free of open defects, shake, splits, or doze. Moulding must be smooth and free of visible knife, saw, or sanding marks. Specify from following options:

Meeting Edge Options

*

*

*

*

No bevel Bevel

*

* Flat astragal

Flush Mouldings

Tee astragal

Metal vision frame

Rabbeted Parallel bevel Double egress Metal edge guards and astragal Metal edge guards Meeting edge options - Figure 1300-17

Transom Meeting Edge Options

Non-rabbeted Rabbeted

Lip Moulding Glazing Options - Figure 1300-19 W = Wood mouldings M = Metal vision frames All cutouts for metal or wood vision panels must be a minimum of 6" [152 mm] from the edge of the door and/or other cutouts for louvers, locks, closers or other hardware. This 6" [152 mm] distance must be maintained or the fire label 1300 and warranty will be voided. For non-fire rated doors, the distance may be decreased to 5" [127 mm]. Less than 5" [127 mm] may affect the warranty. Using a 10" [254 mm] margin between the edge of the door and the edge of any cutout near the lock area will eliminate most label and warranty conflicts.

Transom edge options - Figure 1300-18 These sizes of glass are not approved for 1- and 11/2hour fire doors. All sizes shown are approved for 20minute and 45-minute and non-labeled wood doors. © 1999 Architectural Woodwork Institute - 7th Edition Quality Standards

401

Architectural Flush Doors Section 1300

1300-G-18 Construction Details (cont.) Louver Options

Flashings Door top Bottom of cutout

Exterior Surface

Variety of sizes Wood slats

Door bottom Flashing Detail - Figure 1300-21 If the woodworker is to flash the top of the door or the bottom edge of cut-outs for exterior doors, it must be specified.

Wood slats

Dutch Door Options

Wood chevrons

One side shelf Two side shelf

Metal chevrons Fusible link Louver Options - Figure 1300-20

20-Min shelf No shelf

WL = Wood louver. Not allowed by NFPA 80 in fire doors or 20-minute doors. FL = Fusible link louver.

Rabbeted meeting rails

Not allowed in 20-minute doors. All fusible link louvers must be minimum 8" [203 mm] from the bottom of the door to the bottom of the louver cutout and 6" [152 mm] from the edge of the louver cutout to the edge of the door and/or other cutouts for vision panels, locks, closers, or other hardware.

Dutch Door Options - Figure 1300-22

These minimum dimensions must be maintained or the fire 1300 rating label and warranty will be voided. Sizes and details other than those illustrated are available.

402

© 1999 Architectural Woodwork Institute - 7th Edition Quality Standards

Architectural Flush Doors Section 1300

Blocking Options

Crossbands

For undercutting flexibility and specialized hardware applications, a number of internal blocking options are available from most manufacturers. Among them are such options as 5" [127 mm] top rail, 5" bottom rail, 5" x 18" [127 x 457 mm] lock blocks (may be one side only), 21/2" [64 mm] cross blocking, and a 5" x 5" hook block. Other options may be available. Consult your AWI manufacturer early in the design process to determine availability.

• Crossbands shall be edge-glued or one piece and without voids.

1300-G-19 Workmanship General Requirements Veneer Faces Opaque or Transparent Finish

Horizontal Edges • Joints in horizontal edges shall be without gaps. • Horizontal edges shall be sound without splits, shake, or doze. • There shall be no gaps between veneer layers and solid horizontal edges.

1300-G-20 Dimensional Tolerances

• Joints must be tight. • Veneer faces must be completely glued to substrate.

Doors Not Prefit

• Veneer faces shall be thoroughly sanded with no visible scratches, knife marks, or other manufacturing defects.

Width: ± 1/16" [1.6 mm]

• Veneer faces shall meet face grades set forth in this Standard.

Thickness: ± 1/16" [1.6 mm]

• Veneer faces may not exhibit glue bleed-through at joints or through veneer. • Door manufacturer is not responsible for the appearance of field finished doors.

Vertical Edges Opaque or Transparent Finish • Vertical edges shall be smoothly sanded, free of knife and saw marks. • Voids are not permitted between veneer layers and solid wood edges. • Vertical edges shall be free of knots, shake, or doze. • Where allowed, the hinge edge may be jointed. Joints must be tight. Number of joints shall not exceed the number of hinges. • Vertical edges shall have a sanded ease at intersection of edges and face veneers.

Height: ± 1/16" [1.6 mm]

Doors Machined for Hardware Width: ± 1/32" [0.8 mm] Height: ± 1/16" [1.6 mm] Thickness: ± 1/16" [1.6 mm] Hardware location: ± 1/32" [0.8 mm] Locks and hinges: ± 1/32" [0.8 mm]

Typical Prefit Clearances Top and hinge edges: 1/8" [3.2 mm] Single door, lock edge: 1/8" [3.2 mm] Pair meeting edge: 1/16" per leaf [1.6 mm] Bottom (rated or nonrated): 1/2" [13 mm] from top of decorative floor covering; 3/4" [19 mm] maximum from top of noncombustible floor; 3/8" [10 mm] maximum from top of noncombustible sill or threshold. 1300

Sanded eased edge Eased Edges - Figure 1300-23

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1300-G-21 Factory Finishing

• Seal at earliest possible moment. Edge sealing is particularly important.

Factory finishing is generally specified when a project requires high quality performance and superior appearance. AWI factory finishing selections and specifications are based on Section 1500 of these Standards. Factory finishing offers many benefits, including:

• Handle doors with clean hands or clean gloves.

Installation • Allow doors to become acclimated to finished building heat and humidity before fitting and hanging.

• State-of-the-art equipment in a well-lighted, dust-free environment (conditions normally not available in the field) provides uniform color, texture, and sheen.

• Utility or strength of doors must not be impaired by fitting to the opening, applying hardware, plant-ons, louvers or other detailing.

• Proper sanding prior to the application of stains and finishes. Field conditions often hinder surface preparation, resulting in a lack of clarity and uniformity in finish and color.

• In fitting for width, trim equally from both sides. See Fire Door Requirements (following section) for special fitting instructions on rated doors.

• Protection from unfavorable relative humidity conditions at the earliest possible time.

• In fitting for height, do not trim top or bottom edge more than 3 /4" unless accommodated by additional blocking. See Fire Door Requirements (following section) for special fitting instructions on rated doors.

• Cost savings (in most cases) over the total cost of field applied finishes by a separate contractor. • Shorter installation time on the job site, resulting in faster project completion. • Single-source responsibility. Sample Submission

• Threaded-to-the-head wood screws are preferable for fastening all hardware on nonrated doors and required on all rated doors. Pilot holes must be drilled for all screws to avoid splitting.

Woodwork manufacturers will provide standard colors for selection.

• Use two hinges for doors up to 60" in height, three hinges for doors up to 90" in height, and an additional hinge for every additional 30" of door height or portion thereof.

To specify nonstandard colors and sheens, the architect is to provide two or more samples at least 8" x 10" [200 x 250 mm] showing the desired finish effect on the wood species and cut to be used.

• Light or louver cuts in exterior doors must be treated to prevent moisture from entering the door core. Flashing is a good method.

Samples are to bear identification of the project, architect, general contractor, and door supplier. The manufacturer may elect to submit samples in sets of two or more, illustrating the possible range of variations. The finished sample sets then become the final criteria for evaluating color and finish appearance conformity. However, variations can be expected due to the nature of wood.

1300

• Lift or carry door. Do not drag one door against another.

Fire Door Requirements • Install doors as required by NFPA Pamphlet 80. All 45-, 60-, and 90-minute rated doors may be hung with either half surface or full mortise hinges. Core reinforcements can be specified to permit hardware to be surface mounted with screws. Labels shall not be removed from fire-rated doors.

Sample Protection

Preparation of Labeled Door

Approved samples must be protected from the effect of light. Cover faces and place samples in closed storage during the period between approval and fabrication, finishing and delivery of the finished product.

Preparation of 20-, 45-, 60-, and 90-minute rated doors must be done under label service in accordance with the manufacturer’s service procedure. This includes trimming for size except a maximum of 3/4" off the bottom of the door. Preparation of locks, latches, hinges, closers, lights, louvers, astragals, and any fabrication must be done under licensed label service.

1300-G-22 Care and Installation at Job Site Storing

Fire-Retardant Salts

• Store at least 4" off floor, flat on a level surface in a clean, dry, well-ventilated area protected from sunlight, wide swings in relative humidity, and abnormal heat or cold. Relative humidity should not be less than 25% nor more than 55%. • Store doors in closed-in building with operational HVAC system. • Cover doors to keep clean, but allow air circulation. 404

The edge and crossbands of many rated doors contain salts which attract moisture. When exposed to high humidity, they appear on the surfaces as white crystals. Clear finishes will not remove and will highlight these crystals. Remove the crystals by light sanding after the doors are thoroughly dried. If the crystal build-up is heavy, clean with a damp sponge and allow to dry before sanding. At that point seal, and refinish. Avoid the use of steel wool on fire-rated wood doors.

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1300-G-23 Hand and Bevel of Doors The “hand” of a door is always determined from the outside. The outside of an exterior door is the street or entrance (key) side. The outside of an interior room or auditorium door is the corridor or hall (key or imaginary key) side. The outside of a closet door is the side opposite the closet; the room, corridor or hall side. The outside of a single communicating door is the side from which the butts are invisible when the door is closed. The outside of twin communicating doors is the space between the two doors. Standard-handed doors push away from the person standing on the outside/key side. Reverse-handed doors pull toward the person standing on the outside/key side.

Hand of Door: right hand (RH)

Outside KeySide

Hand of Door: left hand (LH)

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Outside KeySide

Hand of Door: right hand reverse (RHR)

Hand of Door: left hand reverse (LHR) Hand of Doors - Figure 1300-24

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1300-G-24 AWI Door Symbol AWI Door Symbols are assigned to facilitate specifying. The AWI Door Symbol chart on the following page explains the symbols used in subsequent sections of these standards.

ES

LL

SR

FD 1-1/2

FD 3/4

FD 1

FSLC-7

SLC-HPDL-5

SLC-7

SLC-5

IHC

FD 1/3

FPC-HPDL-5

FPC-5

PC-HPDL-5

PC-HPDL-3

PC-7

PC-5

FPC-7

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SHC

Market pressures will cause these relationships to vary

Relative Cost of Cores - Figure 1300-25

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AWI Door Symbol PC-5 ME PC-5 CE PC-7 ME PC-7 CE PC-HPDL-3

Description Vertical edge species matches face veneer species (ME) Stiles and rails securely glued to particleboard core and sanded before veneering Vertical edge species compatible with face veneer species (CE) Stiles and rails securely glued to particleboard core and sanded before veneering Vertical edge species matches three-ply skin face veneer species (ME) Stiles and rails securely glued to particleboard core and sanded before veneering Vertical edge species compatible with three-ply skin face veneer species (CE) Stiles and rails securely glued to particleboard core and sanded before veneering High pressure decorative laminate glued directly to core assembly Stiles and rails securely glued to particleboard core and sanded before laminating

PC-HPDL-5

High pressure decorative laminate glued to hardwood crossbands on core assembly Stiles and rails securely glued to particleboard core and sanded before laminating

SLC-5 ME

Vertical edge species matches face veneer species (ME) Stiles and rails securely glued to stave lumber core and sanded before veneering

SLC-5 CE

Vertical edge species compatible with face veneer species (CE) Stiles and rails securely glued to stave lumber core and sanded before veneering

SLC-7 ME

Vertical edge species matches three-ply skin face veneer species (ME) Stiles and rails securely glued to stave lumber core and sanded before veneering

SLC-7 CE SLC-HPDL-5

FPC-5 ME FPC-5 CE FPC-7 ME FPC-7 CE

Vertical edge species compatible with three-ply skin face veneer species (CE) Stiles and rails securely glued to stave lumber core and sanded before veneering High pressure decorative laminate glued to hardwood crossbands on core assembly Stiles and rails securely glued to stave lumber core and sanded before laminating Vertical edge species matches face veneer species (ME) Stiles and rails not glued to particleboard core before veneering Vertical edge species compatible with face veneer species (CE) Stiles and rails not glued to particleboard core before veneering Vertical edge species matches three-ply skin face veneer species (ME) Stiles and rails not glued to particleboard core before veneering Vertical edge species compatible with three-ply skin face veneer species (CE) Stiles and rails not glued to particleboard core before veneering

FPC-HPDL-5

High pressure decorative laminate glued to hardwood crossbands on core Stiles and rails not glued to particleboard core before laminating

FSLC-7 ME

Vertical edge species matches three-ply skin face veneer species (ME) Stiles and rails not glued to stave lumber core before veneering

FSLC-7 CE

Vertical edge species compatible with three-ply skin face veneer species (CE) Stiles and rails not glued to stave lumber core before veneering

FD 1-1/2 FD 1

1300

Fire rated door, labeled for 1-1/2 hours (2 hour wall rating) Fire rated door, labeled for 1 hour (1 hour wall rating)

FD 3/4

Fire rated door, labeled for 3/4 hour (1 hour wall rating)

FD 1/3

Fire rated door, labeled for 1/3 hour (1 hour wall rating)

SR LL

Sound retardant door Lead lined door

ES

Electrostatic shielded door

IHC

Institutional hollow core door

SHC

Standard hollow core door

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Standards Specific requirements for face materials and door construction are provided in this section. General requirements for architectural doors are provided in the previous section. Solid Core Doors Solid core doors are customarily manufactured 1-3/4" thick. When functional requirements dictate their specification, solid core doors can be manufactured 1-3/8" thick, although there are little or no savings in cost. When specified, thicker doors can be manufactured with commensurate adjustment in cost and delivery times. Hollow Core Doors Hollow core doors are customarily manufactured 1-3/8" and 1-3/4" thick.

1300-S-1 Grades and Specification Requirements Specific requirements for face, matching veneers, vertical edges, lights, louvers, moulding, and transoms are provided in the following tables. AWI Grade must be specified. (In the absence of Grade specifications, Custom Grade will be furnished.) In the absence of method and/or materials specifications, the following standards will apply. Where more than one method or material is listed for a Grade, manufacturers will supply their choice from the alternatives.

1300-S-2 Face Material Requirements (See Section 200 for “AA”, “A” or “B” face veneer grade summary tables. Commercial doors will usually be manufactured to AWI Custom Grade, using HPVA veneer face grade “A” or lower.) Veneers for Transparent Finishes: Premium Grade

1300

“AA” grade faces are required for Premium Grade doors. Veneer is required to be of sufficient thickness (minimum 1/50" at 12% MC) to preclude sand-through, show-through of core, and glue bleed. Custom Grade “A” grade faces are required for Custom Grade doors. Veneer is required to be of sufficient thickness (minimum 1/50" at 12% MC) to preclude sand-through, show-through of core, and glue bleed. Economy Grade

The upper three veneer face grades established by the Hardwood Plywood & Veneer Association (HPVA) are utilized in AWI-quality architectural woodwork. (These are not the same standards used for softwood plywood. HPVA Grade "B" hardwood plywood may be superior to APA Grade "A" fir plywood, for example.) The grading requirements for the purposes of AWI Quality Standard architectural woodwork are described in the following paragraphs, and detailed in Section 200. It is improper to refer to veneers (or any raw material) using the terms AWI “Premium,” “Custom,” or “Economy” Grades. These grade designations only apply to finished products, as outlined in other sections of this 7th Edition Quality Standards Illustrated. GRADE AA — The veneer shall be smooth, tight cut and full length. When the face consists of more than one veneer component or piece, the edges shall appear parallel and be edge matched as described for the various species in 200-S-9. Rotary cut faces may be whole piece or multipiece with edge joints tight and no sharp color contrasts at the joints. Species specified for natural color will allow color contrasts, but must be book matched or conform to the type of matching specified. The components of plain sliced (flat cut) faces will be book matched, unless otherwise specified, and arranged, at the option of the woodworker, with a running, balanced, or center match, unless otherwise specified. Plain sliced faces will consist of two or more components and rotary faces will consist of one or more components with no component less than 152 mm (6") wide except for outside components which may be less than 152 mm (6") to allow for certain types matching or panel edge trim loss. No plain sliced components will have a split heart. No full quarter cut is allowed in plain sliced faces. The width of any single component in quarter cut, rift cut or comb grain faces shall not be less than 76 mm (3") except for outside components which may be less than 76 mm (3") to allow for matching and edge trimming. Hardwood veneer faces from species not covered in 200-S-9 may contain small burls and occasional pin knots not to exceed 6 mm (1/4") in total diameter and 3 mm (1/8") in diameter of the dark pin knot centers. Color streaks or spots; two repaired, tapering hairline splits not to exceed 1.5 mm (1/16") by 152 mm (6"); and small inconspicuous repairs are also permitted. Unfilled wormholes, rough cut veneer, knots (other than pin knots), shake, and doze and other forms of decay will not be permitted. GRADE A — The veneer shall be smooth, tight cut and full length. When the face consists of more than one veneer component or piece, the edges shall appear parallel and be edge matched as described for the various species in 200-S-9. Rotary cut faces may be whole piece or multipiece with tight edge joints; however, no sharp color contrasts are permitted at the joints and the face will provide a good general appearance. Species specified for natural color will allow color contrasts, but must be book matched or conform to the type of matching specified. The components of plain sliced (flat cut) faces will be book matched, unless otherwise specified, and arranged, at the option of the woodworker, with a running, balanced, or center match, unless otherwise specified. Plain sliced faces will consist of two or more components and rotary faces will

“B” grade faces are accepted for Economy Grade doors. Veneer is required to be of sufficient thickness (minimum 1/50" at 12% MC) to preclude sand-through, show-through of core, and glue bleed. © 1999 Architectural Woodwork Institute - 7th Edition Quality Standards 408

Architectural Flush Doors Section 1300

consist of one or more components, with no component less than 127 mm (5") wide except for outside components which may be less than 127 mm (5") to allow for certain types matching or panel edge trim loss. Split heart is permitted if manufactured cathedral is achieved. No full quarter cut is allowed in plain sliced faces. The width of any single component in quarter cut, rift cut or comb grain faces shall not be less than 76 mm (3") except for outside components which may be less than 76 mm (3") to allow for matching and edge trimming. In some species sapwood is permitted; in other species it may be permitted by agreement between buyer and seller.

Materials for Opaque Finishes:

Hardwood veneer faces from species not covered in 200-S-9 may contain small burls and occasional pin knots not to exceed 6 mm (1/4") in total diameter and 3 mm (1/8") in diameter of the dark pin knot centers. Color streaks or spots; two repaired, tapering hairline splits not to exceed 1.5 mm (1/16") by 152 mm (6"); and small inconspicuous repairs are also permitted. Unfilled wormholes, rough cut veneer, knots (other than pin knots), shake, and doze and other forms of decay will not be permitted.

Premium Grade

Premium Grade Medium density overlay (MDO). Custom Grade Sound close grain hardwood, minimum “B” grade (minimum 1/50" at 12% MC). Economy Grade Mill Option. Materials for Laminate Faces: HGS high pressure decorative laminate. Custom Grade HGS high pressure decorative laminate. Economy Grade Mill Option.

GRADE B — The veneer shall be smooth, tight cut and full length. Slip or book matched veneers are available if specified by the buyer. If not specified, multipiece faces will be pleasingly matched. Sharp color contrasts at the joints are not permitted, and natural variations in grain and color will be blended to the extent possible. Species specified for natural color will allow color contrasts, but must be pleasing matched or conform to the type of matching specified. Plain sliced faces will consist of two or more components with no component less than 76 mm (3") wide, and rotary faces will consist of one or more components with no component less than 102 mm (4"). Outside components may be less than 76 mm (3") for plain sliced faces and 102 mm (4") for rotary faces to allow for certain types of matching or panel edge trim loss. Some full quarter cut is permitted in plain sliced faces. For some species unlimited sapwood is allowed, and in other species a percentage of sapwood is allowed. Hardwood veneer faces from species not covered in Section 200 may contain small burls and occasional pin knots not to exceed 6 mm (1/4") in total diameter and 3 mm (1/8") in diameter of the dark pin knot centers. Color streaks or spots; two repaired, tapering hairline splits not to exceed 3 mm (1/8") by 203 mm (8"); and small inconspicuous repairs are also permitted. Unfilled wormholes, rough cut veneer, knots (other than pin knots), shake, and doze and other forms of decay will not be permitted.

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1300-S-3 Core Requirements The architect/specifier is required to make a core selection depending upon the application. The core materials are manufactured according to the following requirements: Particleboard Core Particleboard door core is manufactured to the ANSI standard A208.1; either grade LD1 (MOR 400 psi/MOE 80K psi) or grade LD2 (MOR800 psi/MOE 150K psi). Staved Lumber Core May be a combination of blocks or strips, not more than 21/2" wide, of one species of wood at 6-9% moisture content. Joints to be tight and staggered in adjacent rows. Structural Composite Lumber Core A man-made composite that utilizes wood strands from a variety of tree species providing an alternative to dimension lumber. The material is engineered for strength and stability. While not really “lumber” it is marketed as a lumber substitute, to be used in primarily place of stave lumber core materials. SCL is tested under a number of ASTM and other test criteria. There is insufficient data to recommend SCL for exterior use.

1300-S-4 Exposed Vertical Edges, Lite and Louver Openings Premium Grade Same species on exposed surface as face; lumber, or veneer over hardwood. Joints not allowed. Sanded ease. Custom Grade Same species on exposed surface as face; lumber, or veneer over hardwood, or compatible hardwood. Joints allowed on hinge edge only. Sanded ease. Economy Grade Mill option veneer or lumber. Joints allowed. Sanded ease. NOTE: Select White Maple is allowed for vertical edges, beads, mouldings, and lite and louver openings on Natural and Select White Birch doors; not allowed on Select Red Birch doors, in all AWI grades. Edges for opaque finish may be any close grained hardwood, i.e. Birch, Maple, Poplar, etc.

Selection for Grain and Color Plant Assemblies For Transparent finish, adjacent members shall … • Premium Grade: … be well matched for grain and color. • Custom Grade: … be compatible for color.

Hollow Core Phenolic impregnated honeycomb or expanded honeycomb made of corrugated fiberboard. Ladder and grid core also permitted. Mineral Core Noncombustible mineral composite.

• Economy Grade: … not be selected. Visible finger joints not permitted in Premium Grade; permitted on hinge edge in Custom Grade; and permitted in Economy Grade. No selection for grain or color is required for opaque finish in any Grade. Field Assemblies

Lead Lined Lead sheets having a thickness of 1/32" (2 lb.); 1 /16" (4 lb.); 3/16" (12 lb.) or 1/4" (16 lb.).

Selection of adjacent members for compatibility is the responsibility of the installation contractor.

1300

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1300-S-5 Vertical and Horizontal Edge Interface with Core Components The architect/specifier is required to make a core interface selection depending upon the application. There are two types of interface between the core and the edges in solid core doors: A. PC or SLC: Bonded - Vertical and horizontal edges of solid and mineral core doors must be securely bonded to the core with adhesives and then abrasive planed before veneering to ensure minimal telegraphing of core parts through veneers or overlay. B. FPC or FSLC: Nonbonded - Vertical and horizontal edges are not bonded to the core. The maximum gap between core and vertical and horizontal edges to be 1/32". Component size thickness tolerance is ± 0.005" to ensure minimal telegraphing of core parts through veneers or overlay and adequate veneer bonding to core components. In this construction the components that compose the face of the door, whether 5 ply or 7 ply, serve to hold the core components together.

1300-S-6 Adhesives Veneer gluelines are Type I or Type II. Type I adhesives are generally more resistant to the effects of moisture than Type II. Type II adhesives are acceptable for most applications. Woodworkers and door manufacturers have benefited from recent advances in adhesive technology. The modern adhesives are durable, safe, and effective. Consult with your door manufacturer for special-purpose applications. See Section 100 for a brief summary of adhesives.

1300

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1300-S-7 Veneer, Bonded Particle Core

PC-5

Top and Bottom Horizontal Edge: 1-1/8" minimum wood prior to field fitting, one piece or laminated without voids or show-through (telegraphing) [SCL recommended for interior use only]

PC-7

Vertical Edge: 1-3/8" minimum hardwood; solid, laminated or veneered, prior to field fitting. SCL allowed under hardwood in lamination. Core: Particleboard, ANSI A208.1, grade LD-1 or LD-2 Bonding: Stiles and rails securely bonded to core, then entire unit abrasive planed before veneering Veneer Back (7-ply doors) Crossband: Edge glued or one-piece wood product, without voids or show-through (telegraphing) Veneer Face Label

AWI Door Symbol

Rating

Wall Rating

20-minute

FD 1/3

1/3 hour

1 hour

NOTE: Label rating is available in any AWI grade listed below, subject to fabrication under label agreement. Criteria Veneer face

1300

Custom

Premium “AA” grade, edge glued joints

“A” grade, edge glued joints

Economy “B” grade, edge glued joints

Veneer match

Book, slip or random Balanced Pair and set match Door and transom end or continuous matched

Book, slip or random Running Pair and set selected for similar color and grain Door and transom end or continuous matched

Mill option

Vertical edges

Same species as face, lumber or veneer over hardwood (ME); sanded ease No visible joints allowed

Same species as face, lumber or veneer (ME); or compatible hardwood (CE); sanded ease Visible joints allowed on hinge edge

Mill option; sanded ease Visible joints allowed

Lights, louvers and mouldings

Same species lumber, or veneered, or metal vision frames

Compatible species lumber or metal vision frames

Mill option

Transoms

Bottom horizontal edge runs full width. Matching species lumber or veneered

Bottom horizontal edge runs full width. Compatible species lumber or veneered

Mill option

NOTES: Veneer match in excess of Standards must be specified. Maple edges allowed for Natural and White Birch. Core and edge requirements also apply to 20-minute rated doors. Maximum 1,296 square inch light openings in 20-minute doors. Louvers not allowed in 20-minute doors. 9-ply doors are available and should be evaluated and specified or approved by the design professional when desired.

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1300-S-8 High Pressure Decorative Laminate (HPDL), Bonded Particle Core

PC-HPDL-3

Top and Bottom Horizontal Edge: 1-1/8" minimum wood, prior to field fitting, one piece or laminated without voids or show-through (telegraphing) [SCL recommended for interior use only]

PC-HPDL-5 NOTE: an FPC-HPDL-5 is available in some markets in which the stiles and rails are not bonded to the core before lamination. FPC5 core standards apply.

Vertical Edge: 1-3/8" minimum hardwood; solid, laminated or veneered, prior to field fitting. SCL allowed under hardwood in lamination. Core: Particleboard, ANSI A208.1, grade LD-1 or LD-2 Bonding: Stiles and rails securely bonded to core, then entire unit abrasive planed before laminating Crossband: Edge glued or one-piece wood product, without voids or show-through (telegraphing) Laminate Face Label

AWI Door Symbol

Rating

Wall Rating

20-minute

FD 1/3

1/3 hour

1 hour

NOTE: Label rating is available in any AWI grade listed below, subject to fabrication under label agreement. Premium

Custom

Economy

Laminate face

HGS (nominal 0.048") high pressure decorative laminate; continuous door and transom match, material permitting

HGS (nominal 0.048") high pressure decorative laminate; continuous door and transom match, material permitting

HGS (nominal 0.048") high pressure decorative laminate; Mill Option door and transom match.

Vertical edges for wood grain patterns

Matching HGS laminate, or finished matching species lumber or veneer to blend with face; no visible joints allowed

Matching HGS laminate, or finished compatible lumber or veneer; no visible joints allowed

Mill option

Vertical edges for solid colors

Matching HGS laminate or close grain hardwood painted to match; no visible joints allowed

Matching HGS laminate or close grain hardwood painted to blend; visible joints allowed on painted hinged edge only

Mill option

Lights, louvers, and mouldings for wood grain patterns

Matching species, lumber or veneer with transparent finish, or painted metal vision frame or louver

Compatible species lumber or veneer for finishing or primed metal vision frame or louver

Mill option

Lights, louvers, and mouldings for solid colors

Matching HGS laminate, or close grain hardwood with paint finish, or painted vision frame or louver to match

Matching HGS laminate, or close grain hardwood for paint finish, or primed vision frame or louver

Mill option

Transom bottom horizontal edges for wood grain patterns

Matching HGS laminate, or matching species lumber or veneer with transparent finish to blend with face

Matching HGS laminate, or compatible lumber or veneer for transparent finish

Mill option

Transom bottom horizontal edges for solid colors*

Matching HGS laminate or close grain hardwood painted to match; no visible joints allowed

Matching HGS laminate, or matching species lumber or veneer for transparent finish; no visible joints allowed

Mill option

Criteria

1300

NOTES: Pair matching not available. Species, color, and finishing for entire wood and/or metal trim package to be specified. Core and edge requirements also apply to 20-minute rated doors. Maximum 1,296 square inch light openings in 20-minute doors. Louvers not allowed in 20-minute doors. 9-ply doors are available and should be evaluated and specified or approved by the design professional when desired. * Includes other non-wood grain patterns.

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1300-S-9 Veneer, Bonded Staved Lumber Core

SLC-5

Top and Bottom Horizontal Edge: 1-1/8" minimum wood prior to field fitting, one piece or laminated without voids or show-through (telegraphing) [SCL recommended for interior use only]

SLC-7

Vertical Edge: 1-3/8" minimum hardwood; solid, laminated or veneered, prior to field fitting. SCL allowed under hardwood in lamination. Core: Staved Lumber, additional hardware blocking not required. [SCL core by direct specification only.] Bonding: Stiles and rails securely bonded to core, then entire unit abrasive planed before veneering Veneer Back (7-ply doors) Crossband: Edge glued or one-piece wood product, without voids or show-through (telegraphing) Veneer Face Label

AWI Door Symbol

Rating

Wall Rating

20-minute

FD 1/3

1/3 hour

1 hour

NOTE: Label rating is available in any AWI grade listed below, subject to fabrication under label agreement. Criteria

Premium

Custom

Economy

“AA” grade, edge glued joints

“A” grade, edge glued joints

“B” grade, edge glued joints

Veneer match

Book, slip or random Balanced Pair and set match Door and transom end or continuous matched

Book, slip or random Running Pair and set selected for similar color and grain Door and transom end or continuous matched

Mill option

Vertical edges

Same species as face, lumber or veneer on hardwood (ME); sanded ease; no visible joints allowed

Same species as face, lumber or veneer (ME); or compatible hardwood (CE); sanded ease; visible joints allowed on hinge edge

Mill option; sanded ease; visible joints allowed

Lights, louvers and mouldings

Same species lumber, or veneered, or metal vision frames

Compatible species lumber or metal vision frames

Mill option

Transoms

Bottom horizontal edge runs full width; matching species lumber or veneered

Bottom horizontal edge runs full width; compatible species lumber or veneered

Mill option

Veneer face

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NOTES: Veneer match in excess of Standards must be specified. Maple edges allowed for Natl. and White Birch. Core and edge requirements also apply to 20-minute rated doors. Maximum 1,296 square inch light openings in 20-minute doors. Louvers not allowed in 20-minute doors. 9-ply doors are available and should be evaluated and specified or approved by the design professional when desired.

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1300-S-10 High Pressure Decorative Laminate (HPDL), Bonded Staved Lumber Core

SLC-HPDL-5

Top and Bottom Horizontal Edge: 1-1/8" minimum wood prior to field fitting, one piece or laminated without voids or show-through (telegraphing) [SCL recommended for interior use only] Vertical Edge: 1 3/8" minimum hardwood; solid, laminated or veneered, prior to field fitting. SCL allowed under hardwood in lamination. Core: Staved lumber - additional hardware blocking not required. [SCL core by direct specification only] Bonding: Stiles and rails securely bonded to core, then entire unit abrasive planed before laminating Crossband: Edge glued or one-piece,without voids or show-through (telegraphing) Laminate Face

Label

AWI Door Symbol

Rating

Wall Rating

20-minute

FD 1/3

1/3 hour

1 hour

NOTE: Label rating is available in any AWI grade listed below, subject to fabrication under label agreement. Premium

Custom

Economy

Laminate face

HGS (nominal 0.048") high pressure decorative laminate; continuous door and transom match, material permitting

HGS (nominal 0.048") high pressure decorative laminate; continuous door and transom match, material permitting

HGS (nominal 0.048") high pressure decorative laminate; Mill Option door and transom match.

Vertical edges for wood grain patterns

Matching HGS laminate, or finished matching species lumber or veneer to blend with face; no visible joints allowed

Matching HGS laminate, or finished compatible lumber or veneer; no visible joints allowed

Mill option

Vertical edges for solid colors

Matching HGS laminate or close grain hardwood painted to match; no visible joints allowed

Matching HGS laminate or close grain hardwood painted to blend; visible joints allowed on painted hinged edge only

Mill option

Lights, louvers, and mouldings for wood grain patterns

Matching species, lumber or veneer with transparent finish, or painted metal vision frame or louver

Compatible species lumber or veneer for finishing or primed metal vision frame or louver

Mill option

Lights, louvers, and mouldings for solid colors

Matching HGS laminate, or close grain hardwood with paint finish, or painted vision frame or louver to match

Matching HGS laminate, or close grain hardwood for paint finish, or primed vision frame or louver

Mill option

Transom bottom horizontal edges for wood grain patterns

Matching HGS laminate, or matching species lumber or veneer with transparent finish to blend with face

Matching HGS laminate, or compatible lumber or veneer for transparent finish

Mill option

Transom bottom horizontal edges for solid colors*

Matching HGS laminate or close grain hardwood painted to match; no visible joints allowed

Matching HGS laminate, or matching species lumber or veneer for transparent finish; no visible joints allowed

Mill option

Criteria

1300

NOTES: Pair matching not available. Species, color, and finishing for entire wood and/or metal trim package to be specified. Core and edge requirements also apply to 20-minute rated doors. Maximum 1,296 square inch light openings in 20-minute doors. Louvers not allowed in 20-minute doors. 9-ply doors are available and should be evaluated and specified or approved by the design professional when desired. * Includes other non-wood grain patterns.

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Architectural Flush Doors Section 1300

1300-S-11 Veneer, Nonbonded Particle Core

FPC-5

Top and Bottom Horizontal Edge: 1-1/8" minimum wood prior to field fitting, one piece or laminated without voids or showthrough (telegraphing) [SCL recommended for interior use only]

FPC-7

Vertical Edge: 1-3/8" minimum hardwood; solid, laminated or veneered, prior to field fitting. SCL allowed under hardwood in lamination. Core: Particleboard, ANSI A208.1, grade LD-1 or LD-2 Bonding: Stiles and rails not bonded to core, maximum gap between core and vertical and horizontal edges to be 1/32". Component size thickness tolerance is ± 0.005". Veneer Back (7 ply doors) Crossband: Edge glued or one-piece, without voids or showthrough (telegraphing) Veneer Face

Label

AWI Door Symbol

Rating

Wall Rating

20-minute

FD 1/3

1/3 hour

1 hour

NOTE: Label rating is available in any AWI grade listed below, subject to fabrication under label agreement. Criteria Veneer face

Custom

Premium “AA” grade, edge glued joints

“A” grade, edge glued joints

Economy “B” grade, edge glued joints

Veneer match

Book, slip or random Balanced Pair and set match Door and transom end or continuous matched

Book, slip or random Running Pair and set selected for similar color and grain Door and transom end or continuous matched

Mill option

Vertical edges

Same species as face, lumber or veneer over hardwood (ME); sanded ease No visible joints allowed

Same species as face, lumber or veneer (ME); or compatible hardwood (CE); sanded ease Visible joints allowed on hinge edge

Mill option; sanded ease Visible joints allowed

Lights, louvers and mouldings

Same species lumber, or veneered, or metal vision frames

Compatible species lumber or metal vision frames

Mill option

Transoms

Bottom horizontal edge runs full width. Matching species lumber or veneered

Bottom horizontal edge runs full width. Compatible species lumber or veneered

Mill option

1300

NOTES: Veneer match in excess of Standards must be specified. Maple edges allowed for Natural and White Birch. Core and edge requirements also apply to 20-minute rated doors. Maximum 1,296 square inch light openings in 20-minute doors. Louvers not allowed in 20-minute doors. 9-ply doors are available and should be evaluated and specified or approved by the design professional when desired.

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© 1999 Architectural Woodwork Institute - 7th Edition Quality Standards

Architectural Flush Doors Section 1300

1300-S-12 Veneer, Nonbonded Staved Lumber Core

FSLC-7

Top and Bottom Horizontal Edge: 1-1/8" minimum wood prior to field fitting, one piece or laminated without voids or show-through (telegraphing) [SCL on doors, recommended for interior use only] Vertical Edge: 1 3/8" minimum hardwood; solid, laminated or veneered, prior to field fitting. SCL allowed under hardwood in lamination. Core: Staved lumber - additional hardware blocking not required, [SCL core by direct specification only] Bonding: Stiles and rails not bonded to core, maximum gap between core and vertical and horizontal edges to be 1/32". Component size thickness tolerance is ± 0.005". Back Veneer: (7 ply doors) Crossband: Edge glued or one-piece,without voids or show-through (telegraphing) Veneer Face

Label

AWI Door Symbol

Rating

Wall Rating

20-minute

FD 1/3

1/3 hour

1 hour

NOTE: Label rating is available in any AWI grade listed below, subject to fabrication under label agreement. Criteria

Premium

Custom

Economy

“AA” grade, edge glued joints

“A” grade, edge glued joints

“B” grade, edge glued joints

Veneer match

Book, slip or random Balanced Pair and set match Door and transom end or continuous matched

Book, slip or random Running Pair and set selected for similar color and grain Door and transom end or continuous matched

Mill option

Vertical edges

Same species as face, lumber or veneer on hardwood (ME); sanded ease; no visible joints allowed

Same species as face, lumber or veneer (ME); or compatible hardwood (CE); sanded ease; visible joints allowed on hinge edge

Mill option; sanded ease; visible joints allowed

Lights, louvers and mouldings

Same species lumber, or veneered, or metal vision frames

Compatible species lumber or metal vision frames

Mill option

Transoms

Bottom horizontal edge runs full width; matching species lumber or veneered

Bottom horizontal edge runs full width; compatible species lumber or veneered

Mill option

Veneer face

NOTES: Veneer match in excess of Standards must be specified. Maple edges allowed for Natl. and White Birch. Core and edge requirements also apply to 20-minute rated doors. Maximum 1,296 square inch light openings in 20-minute doors. Louvers not allowed in 20-minute doors. 9-ply doors are available and should be evaluated and specified or approved by the design professional when desired.

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1300

Architectural Flush Doors Section 1300

1300-S-13 Veneer, Mineral Core

FD-5

FD-7

Top and Bottom Horizontal Edge: Special construction per label requirements without voids or show-through (telegraphing) Vertical Edge: Special construction per label requirements Core: Non-combustible mineral composition material per label requirements Bonding: Stiles and rails securely bonded to core per label requirements Back Veneer: (7 ply doors) Crossband: Edge glued or one-piece, without voids or show-through (telegraphing) Veneer Face

Label

AWI Door Symbol

Rating

Wall Rating

45-minute

FD 3/4

3/4 hour

1 hour

60-minute

FD 1

1 hour

1 hour

90-minute

FD 1-1/2

1-1/2 hour

2 hour

NOTE: All label ratings are available in any AWI grade listed below, subject to fabrication under label agreement. Premium

Custom

Economy

“AA” grade, edge glued joints

“A” grade, edge glued joints

“B” grade, edge glued joints

Veneer match

Book, slip or random Balanced Pair and set match Door and transom end or continuous matched

Book, slip or random Running Pair and set selected for similar color and grain Door and transom end or continuous matched

Mill option

Vertical edges

Same species as face, lumber or veneer over hardwood (ME); sanded ease; no visible joints allowed

Same species as face, lumber or veneer (ME); or compatible hardwood (CE); sanded ease; visible joints allowed on hinge edge

Mill option; sanded ease. Visible joints allowed

Lights, louvers and mouldings

Special construction per label requirements

Special construction per label requirements

Special construction per label requirements

Per manufacturer’s label requirements

Per manufacturer’s label requirements

Per manufacturer’s label requirements

Criteria Veneer face

1300

Transoms

NOTES: In the absence of specifications the manufacturer may choose from the alternatives within the AWI Grade. Maximum 1,296 square inch light openings in 45-minute doors; 100 square inches in 60- and 90-minute doors. Louvers not allowed in 45-, 60-, and 90-minute doors. 9-ply doors may be available and should be evaluated and specified or approved by the design professional when desired.

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© 1999 Architectural Woodwork Institute - 7th Edition Quality Standards

Architectural Flush Doors Section 1300

1300-S-14 High Pressure Decorative Laminate, Mineral Core

FD-HPDL-3

Top and Bottom Horizontal Edge: Special construction per label requirements without voids or show-through (telegraphing)

FD-HPDL-5

Vertical Edge: Special construction per label requirements Core: Non-combustible mineral composition material per label requirements Bonding: Stiles and rails securely bonded to core per label requirements Crossband: Edge glued or one-piece, without voids or show-through (telegraphing) Laminate Face

Criteria

Premium

Custom

Economy

Laminate face

HGS (nominal 0.048") high pressure decorative laminate; continuous door and transom match, material permitting

HGS (nominal 0.048") high pressure decorative laminate; continuous door and transom match, material permitting

HGS (nominal 0.048") high pressure decorative laminate.

Vertical edges for wood grain patterns

Matching HGS laminate, or finished matching species lumber or veneer to blend with face; no visible joints allowed

Matching HGS laminate, or finished compatible lumber or veneer; no visible joints allowed

Mill option

Vertical edges for solid colors

Matching HGS laminate or close grain hardwood painted to match; no visible joints allowed

Matching HGS laminate or close grain hardwood painted to blend; visible joints allowed on painted hinged edge only

Mill option

Lights, louvers, and mouldings for wood grain patterns

Compatible species, lumber or veneer with transparent finish, or painted metal vision frame or louver

Compatible species lumber or veneer for finishing or primed metal vision frame or louver

Mill option

Lights, louvers, and mouldings for solid colors

Matching HGS laminate, or close grain hardwood with paint finish, or painted vision frame or louver to match

Matching HGS laminate, or close grain hardwood for paint finish, or primed vision frame or louver

Mill option

Transom bottom horizontal edges for wood grain patterns

Matching HGS laminate, or matching species lumber or veneer with transparent finish to blend with face

Matching HGS laminate, or compatible lumber or veneer for transparent finish

Mill option

Transom bottom horizontal edges for solid colors*

Matching HGS laminate or close grain hardwood painted to match; no visible joints allowed

Matching HGS laminate, or matching species lumber or veneer for transparent finish; no visible joints allowed

Mill option

1300

NOTES: Pair matching not available. Species, color, and finishining for entire wood and/or metal trim package to be specified. Maximum 1,296 square inch light openings in 45-minute doors; 100 square inches in 60-, and 90-minute doors. Louvers not allowed in 45-, 60-, and 90-minute doors. * Includes other non-wood grain patterns.

© 1999 Architectural Woodwork Institute - 7th Edition Quality Standards

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Architectural Flush Doors Section 1300

1300-S-15 Veneer, Hollow Core

IHC-7

Top and Bottom Horizontal Edge, 6-12" as specified (IHC) or 1-1/8" minimum (SHC) wood, prior to field fitting, one piece or laminated without voids or show-through (telegraphing) [SCL on doors, recommended for interior use only]

SHC-7

Vertical Edge: 1" minimum hardwood; solid, laminated or veneered, prior to field fitting. SCL allowed under hardwood in lamination. Core: Honeycomb fully expanded to edges; ladder or grid core Bonding: Stiles and rails not bonded to core Blocking, specify by size and location Veneer Back: (7 ply doors) Crossband: Edge glued or one-piece, without voids or showthrough (telegraphing) Veneer Face

Criteria

Premium

Custom

Economy

“AA” grade, edge glued joints

“A” grade, edge glued joints

“B” grade, edge glued joints

Veneer match

Book, slip or random Balanced Pair and set match Door and transom end or continuous matched

Book, slip or random Running Pair and set selected for similar color and grain Door and transom end or continuous matched

Mill option

Vertical edges

Same species as face, lumber or veneer over hardwood (ME); sanded ease; no visible joints allowed

Same species as face, lumber or veneer (ME); or compatible hardwood (CE); sanded ease; visible joints allowed on hinge edge

Mill option ; sanded ease. Visible joints allowed

Lights, louvers and mouldings

Same species lumber, or veneered, or metal vision frames

Compatible species lumber or metal vision frames

Mill option

Veneer face

1300

NOTES: Veneer match in xcess of standard must be specified. Maple edges allowed for Natl. and White Birch. 9-ply doors are available and should be evaluated and specified or approved by the design professional when desired.

420

© 1999 Architectural Woodwork Institute - 7th Edition Quality Standards

Architectural Flush Doors Section 1300

1300-T-2 Show-through or Telegraphing

Tests 1300-T-1 Warp Warp is any distortion in the door itself, and it does not refer to the door in relation to the frame or the jamb in which it is hung. Warp is measured by placing a straight edge or a taut string on the concave face and determining the maximum distance from the straight edge or string to the door face. The accompanying table and drawing illustrate the standard and test. Door Thickness

Door Size

Warp a defect when maximum deviation exceeds

1-3/8" [35 mm]

3'-0" x 7'-0" or smaller [900 x 2100 mm]

1/4" [6 mm]

1-3/4" 3'-6" x 7'-0" or smaller [44 mm] or [900 x 2100 mm] thicker

1/4" [6 mm]

1-3/4" Larger than 3'-6" x [44 mm] or 7'-0" [900 x 2100 mm] thicker

1/4" [6 mm] in any 3'-6" x 7'-0" section [900 x 2100 mm]

Telegraphing is any distortion in the face veneer of a door caused by variations in thickness between the core materials and/or the vertical or horizontal edge bands. In any Grade, variation from a true plane in excess of 0.010" in any 3" span is considered a defect. The accompanying drawing illustrates the typical condition. (The selection of high gloss finishes should be avoided because they tend to accentuate natural variations in material and construction.)

NOTE: 1-3/8" doors are not recommended for sizes in excess of 3'-0" x 7'-0"

Illustration of Show-through Test - Figure 1300-27

1300

Illustration of Warp Test - Figure 1300-26

© 1999 Architectural Woodwork Institute - 7th Edition Quality Standards

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