Certified mill reports should be obtained when
welding is specified or permitted. On minor
projects with no welding, submittal SD-07 may be
deleted.
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Reinforcing steel shall be deformed bars conforming to ASTM A 615/A 615M or
ASTM A 706/A 706M, grades and sizes as indicated. Cold drawn wire used for
spiral reinforcement shall conform to ASTM A 82. In highly corrosive
environments or when directed by the Contracting Officer, reinforcing steel
shall conform to ASTM A 767/A 767M or ASTM A 775/A 775M as appropriate.
2.4
WELDED WIRE FABRIC
Welded wire fabric shall conform to [ASTM A 185] [ASTM A 496] [ASTM A 497/A
497M]. When directed by the Contracting Officer for special applications,
welded wire fabric shall conform to ASTM A 884/A 884M.
2.5
WIRE TIES
Wire ties shall be 16 gauge or heavier black annealed steel wire.
2.6
SUPPORTS
Bar supports for formed surfaces shall be designed and fabricated in
accordance with CRSI 1MSP and shall be steel or precast concrete blocks.
Precast concrete blocks shall have wire ties and shall be not less than 100
by 100 mm 4 inches square when supporting reinforcement on ground. Precast
concrete block shall have compressive strength equal to that of the
surrounding concrete. Where concrete formed surfaces will be exposed to
weather or where surfaces are to be painted, steel supports within 13 mm
1/2 inch of concrete surface shall be galvanized, plastic protected or of
stainless steel. Concrete supports used in concrete exposed to view shall
have the same color and texture as the finish surface. For slabs on grade,
supports shall be precast concrete blocks, plastic coated steel fabricated
with bearing plates, or specifically designed wire-fabric supports
fabricated of plastic.
2.7
SYNTHETIC FIBER REINFORCEMENT
Synthetic fiber shall be polypropylene with a denier less than 100 and a
nominal fiber length of 50 mm 2 inches.
PART 3
EXECUTION
3.1
REINFORCEMENT
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NOTE: There may be special cases where reinforcing
bars, at determined intervals, will be added across
expansion, isolation or construction joints to
provide continuity of reinforcement in meeting
lightning protection criteria. The structural
designer should coordinate this requirement with the
electrical designer to minimize reinforcement across
the joints.
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SECTION 03200A
Page 6
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