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Canadian Standards Association
Precast concrete — Materials and construction
November 2009
10.2.2.2
Tendon deflectors shall comply with the requirements of the design criteria and shall be of a type suitable
for their intended use. When specified by the owner and furnished by a supplier, test and performance
data shall be documented. When tendon deflectors are manufactured by the precast concrete plant’s own
personnel, the design shall be reviewed by the owner. Welding of hardware shall comply with Clause 6.7.4
of CSA A23.1.
10.2.2.3
Tendon deflectors used for holding tendons in the deflected position during stressing shall have pin and
roller fixtures to minimize friction at all deflection points.
10.2.3 Pipes, conduits, and other hardware
Pipes, conduits, and other hardware shall be identified and located on the shop drawings.
10.2.4 Tendon anchors
10.2.4.1
Tendon anchors shall be capable of anchoring the tendon positively without slippage after seating.
10.2.4.2
Steel casings for tendon anchors shall be proof-tested by the supplier to at least 95% of the ultimate
specified tensile strength of the tendon without permanent deformation of the casing.
10.2.4.3
Proper performance and maintenance data for the anchors shall be documented by the supplier.
10.2.4.4
Anchors for reuse shall be of a type designed for reuse. Anchors that are used only once and remain in the
product may be of the one-use-only type.
10.2.4.5
Tendon anchors used repeatedly shall be removed from the beds and maintained regularly in accordance
with the supplier’s recommendations and with the use of proper tools and materials. The frequency of
maintenance shall depend on the type of anchor and its exposure during use, but the same anchor shall
never be used more than five times without checking and maintenance.
10.3 Miscellaneous materials
10.3.1 Special facing materials
When alternative facing materials such as brick, cut stone slabs, ceramic and glass products, plastics,
oversized aggregates, metal sheets or sections, or wood are used as an integral part of the precast
concrete element, such materials shall have a performance record that has been acceptable for at least
5 years under similar exposure conditions or shall be designed, tested, and proved to the satisfaction of
the owner.
10.3.2 Bearing materials
Bearing materials shall have a record of satisfactory performance; alternatively, test results that prove the
adequacy of such materials shall be made available to the owner upon request. Bearing materials shall be
identified on the shop drawings and shall be adequate for the expected loads and movements. The owner
shall specify the bearing materials for any bearings considered to have particularly high structural
significance.
Licensed for/Autorisé à Jed Friesen Sold by/vendu par CSA on/le June/18/2015.
~Single user license only. Storage, distribution or use on network prohibited. Permis d'utilisateur simple seulement.
Le stockage, la distribution ou l'utilisation sur le réseau est interdit.