It is not intended to remove or reduce any responsibilities of the parties involved in the project.
Csa a23 1 table 5.
Concrete supplied under this specification will be specified in accordance with the performance alternative in table 5 of csa a23 1 with the exception that the contractor shall submit the proposed concrete mix design s identifying the exact proportions of all constituent materials by mass or volume.
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.
Paper concrete materials and methods of concrete construction test methods and standard practices for concrete.
These standards are part of the csa a23 series on concrete and supersede the previous editions published in 2009 2004 2000 1994 1990 1977 1973 1967 1960 1942 and 1929.
For references to tilt up construction see pca pa163 and aci 551r.
1 3 4 the requirements of csa a23 4 are applicable to pretensioned concrete and precast concrete used in segmental construction.
Y wish owners may still order concrete to a prescriptive specificationas outlined in csa a23 1 table 5.
Csa a23 1 table 1 deļ¬nitions 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.
Csa a23 1 table 10 range in air content for concretes with indicated nominal maximum sizes of coarse aggregate air content category 10 mm 14 20 mm 28 40 mm 1 6 9 5 8 4 7 2 5 8 4 7 3 6 at the point of discharge from the delivery equipment unless otherwise specified.
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.
This is the twelfth edition of the combined csa a23 1 a23 2 concrete materials and methods of concrete construction test methods and standard practices for concrete.
The owner should specify one of the two alternatives in accordance with table 5 of csa standard a23 1 14.
Table 5 defines the role of the owner contractorand supplier.
Products requiring prestressing or post tensioning are produced in accordance with csa a23 4.
If this option is selected the owner shall identify the following.
