Rebar Splicing Product Training

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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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