9.15.2.

(1) Concrete shall conform to Section 9.3.

(1) Concrete block shall conform to CSA A165.1, “Concrete Block Masonry Units”, and shall have a compressive strength over the average net cross-sectional area of the block of not less than 15 MPa.

(2) Mortar, grout, mortar joints, corbelling and protection for unit masonry shall conform to Section 9.20.

(3) For concrete block foundation walls required to be reinforced,

(a) mortar shall be Type S, conforming to CSA A179, “Mortar and Grout for Unit Masonry”,

(b) grout shall be coarse, conforming to CSA A179, “Mortar and Grout for Unit Masonry”, and

(c) placement of grout shall conform to CSA A371, “Masonry Construction for Buildings”.

(1) Where pier type foundations are used, the piers shall be designed to support the applied loads from the superstructure.

(2) Where piers are used as a foundation system in a building of 1 storey in building height, the piers shall be installed to support the principal framing members and shall be spaced not more than 3.5 m apart along the framing, unless the piers and their footings are designed for larger spacings.

(3) The height of piers described in Sentence (2) shall not exceed 3 times their least dimension at the base of the pier.

(4) Where concrete block is used for piers described in Sentence (2), they shall be laid with cores placed vertically, and where the width of the building is 4.3 m or less, placed with their longest dimension at right angles to the longest dimension of the building.

(1) Foundations of wood frame construction shall conform to,

(a) CAN/CSA-S406, “Construction of Preserved Wood Foundations”, or

(b) Part 4.