50-03200 Concrete Reinforcement.pdf

SECTION 03200

CONCRETE REINFORCEMENT DIVISION 3

West Branch Regional Authority 03200-1 January 2026 Route 54 Sanitary Sewer Extension Project Concrete Reinforcement Contract No. WB-1

PART 1 - GENERAL

1.01 SECTION INCLUDES

A. Reinforcing steel bars and welded steel wire fabric for cast-in-place concrete.

B. Support chairs, bolsters, bar supports, and spacers for supporting reinforcement.

1.02 RELATED SECTIONS

A. Section 03300: Cast-in-Place Concrete.

1.03 REFERENCES

A. American Concrete Institute (ACI)

1. ACI 315 - Details and Detailing of Concrete Reinforcement.

2. ACI 318 - Building Code Requirements for Reinforced Concrete.

B. American Society for Testing and Materials (ASTM)

1. ASTM A82 - Cold Drawn Steel Wire for Concrete Reinforcement.

2. ASTM A185 - Welded Steel Wire Fabric for Concrete Reinforcement.

3. ASTM A615 - Deformed and Plain Billet-Steel Bars for Concrete Reinforcement.

C. American Welding Society (AWS)

1. AWS D1.4 - Structural Welding Code Reinforcing Steel.

D. Concrete Reinforcing Steel Institute (CRSI)

1. CRSI - Manual of Practice.

2. CRSI 63 - Recommended Practice for Placing Reinforcing Bars.

3. CRSI 65 - Recommended Practice for Placing Bar Supports, Specifications and

Nomenclature.

1.04 QUALITY ASSURANCE

A. Perform concrete reinforcement work in accordance with CRSI Manual of Standard

Practice, and CRSI Documents 63 and 65.

B. Conform to ACI 315 and 318.

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1.05 SHOP DRAWINGS

A. Submit Shop Drawings under provisions of Section 01340: Shop Drawings, Product Data and Samples.

B. Indicate sizes, spacings, locations and quantities of reinforcing steel, wire fabric, bending and cutting schedules, splicing, stirrup spacing, and supporting and spacing devices.

1.06 CERTIFICATES

A. Submit mill test certificates of supplied concrete reinforcing, indicating physical and chemical analysis.

PART 2 - PRODUCTS

2.01 MATERIALS

A. Reinforcing Steel: ASTM A615, 60 ksi yield grade billet-steel deformed bars, uncoated finish.

B. Welded Steel Wire Fabric: ASTM A185 plain type; in flat sheets; galvanized finish.

C. Stirrup Steel: ASTM A82.

2.02 ACCESSORY MATERIALS

A. Tie Wire: Minimum 16-gauge annealed type.

B. Chairs, Bolsters, Bar Supports, Spacers: Sized and shaped for strength and support of reinforcement during installation and placement of concrete, including load bearing pad on bottom to prevent base material penetration or vapor barrier puncture.

C. Chairs, Bolsters, Bar Supports, Spacers Adjacent to Architectural Concrete Surfaces:

Plastic coated, plastic tipped, or stainless-steel type; sized and shaped as required.

2.03 FABRICATION

A. Fabricate in accordance with ACI 315.

B. Locate reinforcing splices not indicated on Drawings at points of minimum stress. Indicate location of splices on Shop Drawings.

C. Weld reinforcing bars in accordance with AWS D1.4.

D. Bend reinforcing bars cold using pin sizes in accordance with ACI 318. Do not heat, rebend, or straighten reinforcing bars, unless approved by Engineer for each specific case.

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PART 3 - EXECUTION

3.01 INSTALLATION

A. Before placing concrete, clean reinforcement of foreign particles or coatings.

B. Place, support, and secure reinforcement against displacement. Do not deviate from alignment or measurement.

C. Place reinforcement to obtain concrete coverage (clearance from surface) as shown on the

Drawings.

D. Make wire ties so that ends are directed into concrete, rather than toward concrete surfaces.

E. Install welded wire fabric as flat sheets, rather than rolls.

F. The use of rebar-flange couplers, or other similar devices, will not be permitted without prior written approval for each specific joint. Where permitted, use of flange couplers will require either additional bars or an increase in bar size adjacent to the joint.

G. See Drawing notes for other reinforcing requirements.

3.02 SPLICING

A. Lap Splice: Make lap splices in accordance with ACI 318, Chapter 12, Class B, unless shown otherwise on the Drawings.

B. Weld Splice: Make weld splices in accordance with AWS D1.4 for #14 and larger bars, or only if shown on Drawings for other size bars.

C. Welded Wire Fabric: Lap welded wire fabric at least twelve (12) inches plus the end-extension of wires.

3.03 GROUTING REINFORCING BARS

A. Drill hole to one-quarter (1/4) inch larger than the rebar diameter.

B. Use carbide tip bit or star bit. Core drilling is not acceptable unless sides of hole are sandblasted after drilling is complete.

C. Depth of Embedment: Minimum fifteen (15) times rebar diameter.

D. Use compressed air to clean holes of drilling residue.

E. Thoroughly wet all surfaces of the hole with water. Remove any standing water.

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F. Clean rebar to white-metal finish.

G. Use Sika Sikadur 32 Hi-Mod epoxy grout, in accordance with the grout manufacturer's instructions to secure rebar in hole.

H. Do not grout rebar when ambient temperature is less than 40°F.

I. Cure grout in accordance with manufacturer's instructions.