B-1.1, r. 2 - Construction Code

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8.62. A contractor or owner-builder may not construct a dike around an aboveground tank, unless it meets the following requirements:
(1)  the dike must be of earthwork, steel, concrete or bonded masonry, be liquid-tight and be capable of withstanding a full hydrostatic head;
(2)  the slope of the walls of the dike must be consistent with the angle of repose of the material used;
(3)  the dike must not be higher than 1.8 m from the bottom of the diked area;
(4)  the minimum distance between the dike centre line and the outer tank shell must meet the requirements of Table 2 of section 8.48; and
(5)  the inner wall and the bottom of a diked area must be impermeable to petroleum products and, to that end, the impermeability must be ensured by
(a)  a liner protected against loads and fire complying with CAN/ULC-S668, Standard for Liners Used for Secondary Containment of Aboveground Flammable and Combustible Liquid Tanks, published by Underwriters’ Laboratories of Canada;
(b)  a compacted layer of homogeneous soil at least 3 m thick where the water permeability coefficient of the soil is equal to or less than 10-6 cm/s; and
(c)  a construction consisting of concrete or other incombustible material, provided that the diked area is approved by an engineer who is a member of the Ordre des ingénieurs du Québec.
O.C. 220-2007, s. 1; 87-2018O.C. 87-2018, s. 31.
8.62. A contractor or owner-builder may not construct a dike around an aboveground tank, unless it meets the following requirements:
(1)  the dike must be of earthwork, steel, concrete or bonded masonry, be liquid-tight and be capable of withstanding a full hydrostatic head;
(2)  the slope of the walls of the dike must be consistent with the angle of repose of the material used;
(3)  the dike must not be higher than 1.8 m from the bottom of the diked area;
(4)  the minimum distance between the dike centre line and the outer tank shell must meet the requirements of Table 2 of section 8.48; and
(5)  the inner wall and the bottom of a diked area must be impermeable to petroleum products and, to that end, the impermeability must be ensured by
(a)  a liner protected against loads and fire complying with ULC/ORD Standard C58.9 Secondary Containment Liners for Underground and Aboveground Flammable and Combustible Liquids Tanks, published by Underwriters’ Laboratories of Canada;
(b)  a compacted layer of homogeneous soil at least 3 m thick where the water permeability coefficient of the soil is equal to or less than 10-6 cm/s; and
(c)  a construction consisting of concrete or other incombustible material, provided that the diked area is approved by an engineer who is a member of the Ordre des ingénieurs du Québec.
O.C. 220-2007, s. 1.