Rebar Splicing Product Training
DAYTONSUPERIOR.COM
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What is Rebar? Also known as reinforcing bar or steel, rerod, and deformed bar Structural steel added to concrete to create reinforced concrete Ovular shaped with deformations (ribs) to allow for concrete adherence Hides inside virtually every construction project in the world
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What is Rebar? Able to be engineered, fabricated, and customized Makes the world’s largest structures possible Environmentally friendly made from 100% recycled scrap, able to be 100% recycled
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Rebar Properties Tensile Strength
Stress required to break rebar “Ultimate Strength” FU
Yield Strength
Stress at which permanent deflection begins “Rebar Grade” FY Design Strength
Elongation
Percent difference in length from total permanent deflection
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Rebar Dimensions Imperial Bar Size
Mass Per Unit Length "Soft" Metric Size (lb⁄ft) (kg/m)
Nominal Diameter
Nominal Area
(in)
(mm)
(in²)
(mm²)
#4
13mm
0.668
0.996
0.5
12.7
0.2
129
#5
16mm
1.043
1.556
0.625
15.875
0.31
200
#6
19mm
1.502
2.24
0.75
19.05
0.44
284
#7
22mm
2.044
3.049
0.875
22.225
0.6
387
#8
25mm
2.67
3.982
1
25.4
0.79
509
#9
29mm
3.4
5.071
1.128
28.65
1
645
#10
32mm
4.303
6.418
1.27
32.26
1.27
819
#11
26mm
5.313
7.924
1.41
35.81
1.56
1006
#14
43mm
7.65
11.41
1.693
43
2.25
1452
#18
57mm
13.6
20.284
2.257
57.3
4
2581
#4-#8 Rebar: Bar Size corresponds with eighth inches in diameter #9-#18 Rebar: Nominal Area corresponds with area of square rebar 6
Rebar Codes ASTM Code
Grade (Yield Strength) Description 40
60
75
80
A615
Standard Rebar
X
X
X
X
A706
Weldable Rebar
X
X
X
X
A767
Galvanized Rebar
X
X
X
X
A775
Epoxy Coated Rebar
X
X
X
X
A955
Stainless Steel Rebar
X
X
A1035
Chromium Alloy Rebar
100
120
X
X
American Society of Testing and Materials (ASTM) owns the sizing, composition, and mechanical properties of rebar Industry is continually driving toward larger, stronger rebar
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Rebar Comparison Benefits
Gives reinforced concrete tensile strength Helps to control concrete cracking Easy to design, fabricate, and install Readily available in different sizes, strengths, finishes
Limitation
Structure size is limited to standard rebar lengths unless the rebar can be connected or “Spliced” Expensive to transport 8
Typical Rebar Splices Welded Splices
In-field, arc welded connection
Lap Splices
In-field, overlapping, wire tied connection
Mechanical Splices
In-field or factory prepared, physical, mechanical couplings
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Splice Performance Type 1 Minimum of 125% FY ACI / D.O.T. Projects Type 2 Maximum of 125% FY and 100% FU ACI Seismic Projects Ultimate Ductile Fracture in Rebar Caltrans Seismic Projects
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Rebar Splice Comparison Welded Splices
Lap Splices
Mechanical Splices
Strength Independent of Concrete
Y
N
Y
Strength Verified by Third Party Testing
N Y Y N N N N N Y N N N N N
N N Y N N N N Y N N Y N N Y
Y Y Y Y Y Y Y Y Y Y Y Y Y Y
Criteria
Performance
Continuous Path of Strength Type 1 Compatible Type 2 Compatible Ultimate Compatible Requires No Excess Rebar
Efficiency
Reduces Congestion Rebar Metalurgically Unchanged Applicable for All Rebar Sizes
Usability
Applicable for All Rebar Types Applicable for All Rebar Finishes Allowable in Federal Buildings
Permissibility
Allowable in Seismic Design Recommended by CRSI
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Mechanical Splices Has none of the limitations of Welded Splices or Lap Splices Guaranteed and tested performance independent of the concrete Applicable for every jobsite application
Preferred splicing method for Highways, Bridges, Infrastructure, Nuclear, and Federal construction
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Mechanical Couplers Technologies
Parallel, Cut Thread (Type 1)
Tapered, Cut Thread (Type 2)
Parallel, Upsized Thread (Ultimate)
Lock, Shear Bolt (Type 1 & Type 2)
Grouted (Ultimate)
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Mechanical Coupler Styles Standard Coupler Connects two bars of the same size where at least one bar is free to rotate
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Mechanical Coupler Styles Transitional Coupler Connects two bars of different size where at least one bar is free to rotate
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Mechanical Coupler Styles Positional Coupler Connects two bars of the same size where neither is free to rotate
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Mechanical Coupler Styles Flange Coupler Connects two bars of same size during staged construction
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Mechanical Coupler Styles Form Saver Coupler made from the rebar and connects two bars of same size during staged construction
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Mechanical Coupler Styles Weldable Coupler Connects one bar to a structural steel member
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Mechanical Splice Solutions
DBR™ Splice System Parallel, Cut Thread, (Type 1)
Taper-Lock® Splice System Tapered, Cut Thread, (Type 2)
DBDI® Parallel, Upsized Thread, (Ultimate)
Bar Lock® Splice System Lock, Shear Bolt, (Type 1 & Type 2)
Sleeve-Lock® Grout Sleeve Grouted, (Ultimate)
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Connection Type
Condition
Splice Solution Matrix Performance Application
Type 1 No Prep
No Prep
Ultimate Standard Transitional Positional Flanged
Prep No Prep
Prep
In Slab
Bar Bar Taper- SleeveDBR™ DBDI® Lock® Lock® Lock® Lock®
X
Slab-to-Slab
Bar Bar Taper- SleeveDBR™ DBDI® Lock® Lock® Lock® Lock®
X
Slab-to-Column
Bar Bar Taper- SleeveDBR™ DBDI® Lock® Lock® Lock® Lock®
Column-to-Column
Bar Bar Taper- SleeveDBR™ DBDI® Lock® Lock® Lock® Lock®
Slab-to-Steel
Bar Bar TaperDBR™ Lock® Lock® Lock®
DBDI®
TaperLock®
DBDI®
Multi-Pour
Application
Prep
Type 2
Coupler Style
DBR™
X
X
X X X
Bar Bar Taper- SleeveDBR™ Lock® Lock® Lock® Lock®
X
X
Tilt Up Member
Bar Bar Taper- SleeveDBR™ Lock® Lock® Lock® Lock®
X
X
Bar Lock®
X
X
Structural Steel Member
Bar Lock®
Bar Bar TaperDBR™ Lock® Lock® Lock®
SleeveLock® DBDI®
X
X
Precast Member
Bridge Deck Repair
Form Weldable Saver
X
X
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Questions? See www.daytonsuperior.com for additional information.
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