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©
Canadian Standards Association
Precast concrete — Materials and construction
November 2009
(2)
Precast concrete elements not within the production tolerances provided in
Clauses 12.2
to
12.5
may be accepted by
the owner if they can be repaired and/or installed to the installation tolerances specified and any variations have been
checked and reviewed for structural implications. The production tolerances specified in
Clauses 12.2
to
12.5
will serve
to establish the responsibility of the precast manufacturer for having the elements repaired in accordance with
Clause 33
and/or installed within the installation tolerances and to verify that structural performance is not impaired.
12.2 Tolerances for architectural precast concrete elements
12.2.1
Element tolerances for architectural precast concrete members shall be in accordance with Article 10.1 of
PCI MNL-135.
12.2.2
Erection tolerances for architectural precast concrete members shall be in accordance with Article 12.5 of
PCI MNL-135. See
Figures 3
and
4
.
12.3 Tolerances for architectural trim elements
12.3.1
Element tolerances for architectural precast concrete trim members shall be in accordance with
Articles 10.27, 10.28, and 10.29 of PCI MNL-135.
12.3.2
Erection tolerances for architectural precast concrete trim members shall be in accordance with
Article 12.5 of PCI MNL-135.
12.4 Tolerances for structural precast concrete elements
12.4.1
Element tolerances for structural precast concrete members shall be in accordance with Article 10.0 of PCI
MNL-135. Articles 10.1, 10.27, 10.28, and 10.29 of PCI MNL-135 shall not apply to this Clause.
12.4.2
Erection tolerances for structural precast concrete members shall be in accordance with Article 12.0 of PCI
MNL-135. Article 12.5 of PCI MNL-135 shall not apply to this Clause.
12.5 Tolerances for structural precast concrete elements with special
surface finishes
12.5.1
Element tolerances for structural precast concrete members with special surface finishes shall be in
accordance with Article 10.0 of PCI MNL-135. Articles 10.1, 10.27, 10.28, and 10.29 shall not apply to
this Clause.
12.5.2
Erection tolerances for structural precast concrete members with special surface finishes shall be in
accordance with Article 12.0 of PCI MNL-135. Article 12.5 of PCI MNL-135. shall not apply to this Clause.
12.6 Panel warping
The maximum allowable panel warpage of one corner out of the plane of the other three at the bottom
surface shall be in accordance with Articles 8.1.7 and 10.0 of PCI MNL-135. See
Figure 1
.
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