NYC 9/11 Public Portal Document
D. CONCRETE HANDLING & PLACING
1. Foundations - Concrete for pile caps, slab, beams,
retaining walls and miscellaneous members shall be placed in the dry.
Before placing any concrete all equipment for mixing and
transporting the concrete shall be clean, all debris and
ice shall be removed from the spaces to be occupied by the
concrete and the reinforcement thoroughly cleaned of
ice or other deleterious coatings. All accumulated water
sh3-ll be removed from the place of deposit before concrete
is placed. Dropping of concrete through water will not be
permitted.
E. REINFORCEMENT
1. The Subcontractor shall prepare and submit shop drawi.ngs
of bar reinforcement for the Contractor's approval in
accordance with the.requirements of the General Conditions.
Such drawings shall show: the element identification,
bending diagrams, cutting, lists, inserts, spacers, etc.
and shall completely demonstrate the location, SLze, spacing,
length and bending of the bar reinforcement. Shop drawiiigs
for concrete reinforcement shall be prepared in accordance
with the American Concrete Institute "Manual of StaJidard
Practice for Detailing Reinforced Concrete Structures",
ACI-315.
2. Reinforcing cages for each elements .shall be completely
assembled and securely tied and braced so as to mainta.in
dimensional rigidity during placing of concrete.
3. Slab reinforcing shall not be in contact with neither
the pile, casing, nor the pile reinforcing.
F. FORMS
Forms shall conform to the shape, lines and dimensions o.f
• the elements shown on the Contract Drawing.?, and shall be
substantially free from surface defects and sufficiently
tight to prevent leakage of mortar. They shall be properly
braced so as to maintain position and shape during the
placing of concrete. Forms shall meet the requirements
of ACI-341-68, "Recommended Practice for Co.ncrete Form
work", and ACT-SP No. 4, "Formwork for Concrete".
BPC-COMMERCIAL CENTER 03315-5
FOUNDATION CONCRETE
WORLD TR!\DE CENI'ER RELOCATICN
NYC-WTC_000165138
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