Division B
Section 9.40. Reinforced Concrete Slabs
Section 9.40. Reinforced Concrete Slabs (See Note A-9.40.) Copy linkAdd bookmark
9.40.1. Scope Copy linkAdd bookmark
9.40.1.1. Application Copy linkAdd bookmark
(1)This Section applies to
(a)reinforced concrete slabs that are suspended over cold rooms in basements, and are supported by foundation walls along the perimeter of the slab with no additional interior supports, and
(b)slabs in which the clear span between supporting walls is not more than 2.5 m along the shortest dimension of the slab.
(2)Slabs for conditions other than described in Sentence (1) shall be designed in accordance with Part 4.
(3)This Section does not apply to reinforced concrete slabs intended to support motor vehicles.
9.40.1.2. Concrete Copy linkAdd bookmark
(1)Concrete shall conform to Section 9.3.
9.40.1.3. Reinforcing Steel Copy linkAdd bookmark
(1)Reinforcing steel shall conform to Grade 400 in CSA G30.18, “Carbon steel bars for concrete reinforcement.”
9.40.1.4. Slab Construction Copy linkAdd bookmark
(1)Concrete shall be cast against formwork in accordance with CSA A23.1, “Concrete materials and methods of concrete construction.”
(2)The slab shall be not less than 125 mm thick.
(3)The slab shall be reinforced with 10M bars spaced not more than 200 mm o.c. in each direction, with 30 mm clear cover from the bottom of the slab to the first layer of bars, and the second layer of bars laid directly on top of the lower layer in the opposite direction.
(4)The slab shall bear not less than 75 mm on the supporting foundation walls and be anchored to the walls with 600 mm × 600 mm 10M bent dowels spaced at not more than 600 mm o.c.
(5)Exposed slabs shall be sloped to effectively shed water away from the exterior wall.