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Canadian Standards Association
Precast concrete — Materials and construction
November 2009
B.5.2
Where the joints between slabs do not have grout keys, they may be taped for roofing or topping
applications. This taping shall be performed by the trade or general contractor who subsequently carries
out the roofing or floor topping operations.
B.5.3
Where differential camber exceeds the values specified in
Clause 12.8
, the joint might have to be
feather-grouted to a slope of 1:12. This work shall be performed by the precast concrete installer.
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