03210.doc

SECTION 03210

PART 1

GENERAL

1.1

SUMMARY

A. Includes But Not Limited To

1.

Furnishing and installing reinforcing as described in Contract Documents.

1.2

REFERENCES

A. American Society For Testing And Materials

1.

ASTM A 615-96a, 'Standard Specification for Deformed and Plain Billet-Steel Bars for Concrete Reinforcement'

1.3

SUBMITTALS

A.

See Section 01300.

B. Quality Assurance/Control

1.

Provide reinforcing placement shop drawings.

1.4

DELIVERY, STORAGE, & HANDLING

A.

Reinforcing steel shall be free of heavy rust scales and flakes, or other coating at time of delivery and placing. Properly protect rebar on site after delivery.

B.

Deliver bars separated by size and tagged with manufacturer's heat or test identification number.

PART 2

PRODUCTS

2.1

MATERIAL

A. Reinforcing Steel

1.

Rebars shall have grade identification marks and conform to ASTM A 615.

a.

Grade 60 minimum.

b.

Bars shall be deformed type.

c.

Bars shall be free of heavy rust scales and flakes, or other bond-reducing coatings.

B. Rebar Spacing Blocks

1.

Acceptable Manufactured Types -

a. Single cover Frank bar chair with wire by Rebar Couplerbox Inc, Humble, TX (713) 446-8734

2.

Other Approved Types -a.

Plain concrete blocks.

2.2

FABRICATION

A.

Fabricate reinforcing steel according to 'ACI Detailing Manual,' 1988 edition, and details on Drawings.

PART 3

EXECUTION

3.1

INSTALLATION

A. Site Tolerances

1.

Provide following minimum concrete cover for reinforcement (ACI 318‑89) ‑ a.

Concrete cast against and permanently exposed to earth -

1) Exterior Slabs on Grade (where shown) - 2 inches

2) Interior Slabs on Grade - 2 inches

3) Sections other than Slabs - 3 inches b.

Concrete Exposed to Earth or Weather -

1) No. 6 & Larger Bars - 2 inches

2) No. 5 & Smaller Bars - 1-1/2 inches c.

Concrete not exposed to weather or in contact with ground -

1) Slabs, Walls & Joists - 3/4 inches

2) Beams & Columns -

3) Primary Reinforcement, Ties, Stirrups, & Spirals - 1-1/2 inches

B.

Bend bars cold.

C. Accurately place and support with chairs, bar supports, spacers, or hangers as recommended by 'ACI Detailing Manual,' 1988 edition, except slab on grade work. Support bars in slabs on grade and footings with specified rebar spacing blocks to maintain specified concrete cover.

D. Dowel vertical reinforcement for formed concrete columns or walls out of footing or structure below with rebar of same size and spacing required above.

E.

Securely anchor and tie reinforcing bars and dowels prior to placing concrete.

F.

Avoid splices of reinforcing bars at points of maximum stress. Lap bars 40 bar diameters minimum unless dimensioned otherwise on the Drawings.

G.

Run steel reinforcing bars continuous through cold joints.

END OF SECTION

03210 - 1 H:\8348\8348003.23\Docs\B-3 Specs\Division 3\03210.doc November 1, 2005