Products requiring prestressing or post tensioning are produced in accordance with csa a23 4.
Csa a23 1 table 5.
For references to tilt up construction see pca pa163 and aci 551r.
Paper concrete materials and methods of concrete construction test methods and standard practices for concrete.
It is not intended to remove or reduce any responsibilities of the parties involved in the project.
Y wish owners may still order concrete to a prescriptive specificationas outlined in csa a23 1 table 5.
Csa a23 1 table 1 definitions of c f n a and s exposure classes see clauses 4 1 1 1 1 4 1 1 5 4 4 4 1 1 1 4 4 4 1 1 2 6 6 7 5 1 8 4 1 2 and tables 2.
For references to tilt up construction see pca pa163 and aci 551r.
Table 5 defines the role of the owner contractorand supplier.
1 3 4 the requirements of csa a23 4 are applicable to pretensioned concrete and precast concrete used in segmental construction.
1 3 4 the requirements of csa a23 4 are applicable to pretensioned concrete and precast concrete used in segmental construction.
1 3 3 if tolerances equivalent to the requirements of csa a23 4 are desired then csa a23 4 is specified for all precasting operations.
If tolerances equivalent to the requirements of csa a23 4 are desired then csa a23 4 is specified for all precasting operations.
1 3 3 if tolerances equivalent to the requirements of csa a23 4 are desired then csa a23 4 is specified for all precasting operations.
The owner should specify one of the two alternatives in accordance with table 5 of csa standard a23 1 14.
The minimum local value 60 of overall specified value must be exceeded in all areas.
With an exception for small slab on grade areas up to 1500 sf see table 21 levelness tolerances do not apply to suspended slabs.
This mix data submission form is intended to help clarify concrete performance issues between the owner contractor and concrete supplier as outlined in csa a23 1 04 table 5 alternative 1 performance page 119.
If this option is selected the owner shall identify the following.