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A23.4-09
©
Canadian Standards Association
November 2009
B.2.2
The general contractor shall provide and maintain site access and operating space for the trucks and
equipment used by the precast concrete installer. The general contractor shall provide safety fences, rails,
gates, and site security.
Notes:
(1)
Such access may include roads, ramps, and crossings capable of supporting cranes and trucks that are normally used
in installation operations of the type in question and move under their own power.
(2)
Foundation and utility excavations should be backfilled by the general contractor when necessary.
B.2.3
The general contractor shall coordinate the work of other trades with the precast concrete manufacturer.
The general contractor shall coordinate the placement of embedded items and their locations as well as
the sizing and locating of openings required by the trades.
B.2.4
The general contractor shall establish and permanently mark, at convenient locations, benchmarks and
building lines for the use of the precast manufacturer in the layout and installation of the precast concrete
elements. If the building frame is not precast, the general contractor shall provide benchmarks and
building lines at each floor.
B.2.5
The general contractor shall assume responsibility for protecting the manufacturer’s work during and after
the final installation of the precast work, including all connections and joints.
Note:
Any cleaning or repairs of the precast concrete work should be carried out by the precast manufacturer.
B.3 Hardware
B.3.1 General contractor’s hardware
B.3.1.1
Precast connection hardware to be placed by the general contractor, as well as setting drawings for
properly locating and placing the hardware, shall be supplied to the job site by the precast manufacturer.
The hardware shall be placed in the structure to the tolerances specified in Clauses 6.7.2 and 6.7.3 of
A23.1.
Notes:
(1)
This practice is the most economical and practical for most projects. A different approach can be advantageous only
when precast concrete elements are being fastened to structural steel buildings that are not fireproofed by structural
concrete encasement. Brackets, angles, etc., which need to be fastened to the structural steel, can be more
economically supplied and shop-welded to supporting members by the structural steel supplier.
(2)
The contractor’s hardware should be delivered to the general contractor in sufficient time to be incorporated into the
structure in accordance with setting drawings supplied by the precast manufacturer and in accordance with a
predetermined and agreed-upon schedule.
(3)
The precast manufacturer should check the location of the contractor’s hardware before actual installation of the
precast elements. This should not, however, relieve the general contractor of the responsibility for properly positioning
such hardware.
B.3.1.2
The general contractor shall maintain and suitably protect the contractor’s hardware (e.g., by capping
inserts and keeping threads clear of concrete).
Licensed for/Autorisé à Jed Friesen Sold by/vendu par CSA on/le June/18/2015.
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