Minimum Thickness Of Concrete Shear Wall

150 mm for concrete shear walls.

Minimum thickness of concrete shear wall.

The 1965 national building code of canada nbcc 1965 subsection 4 5 8 requires a minimum thickness of 6 in. The required thickness was 8 in. Minimum thickness of compression zone of special shear wall that is not tension controlled. But as per constructability purposes it should be at least 12 inches thick and if you have coupling.

Minimum reinforcement is 0 25 of the gross area of the section. Thus it appears that in the example you provided the minimum wall thickness is 6 inches. The thickness of the wall is between 150 mm to 400 mm. I see table r21 9 1 governing design provisions for vertical wall segments.

Factored shear stress is increase 0 25. 200 mm for basement and foundation walls. Although a minimum thickness of 150 mm is possible for a wall it is recommended that 180 250 mm aid detailing and construction. Two curtain reinforcement is provided if.

Shear wall section and assumed reinforcement is investigated after analysis to verify suitability for the applied loads. The diameter of bars is between 1 10 of the wall thickness. In the last post we derived the actions on the shear wall of a building. The thickness of the wall exceeds 200 mm.

Second a minimum wall thickness of 12 inches is imposed throughout the specially confined boundary zone where the wall section is not tension controlled see 18 10 6 4 c figure 2. For more on designing bearing walls refer to chapter 11 of aci 318 19. If i turn to section 21 9 special structural walls and coupling beams. Reinforced concrete shear wall analysis and design.

A wall s thickness is determined based on the forces it is being subjected to required fire resistance durability and buildability. Design considerations of the shear wall. Concrete is naturally fire resistant and aci does not provide any details for minimum thickness for fire resistance. This is a small building 40 0 x40 0 so the loads are not very high at all.

Section 11 3 1 1 states that the minimum thickness shall be based on the shorter of either the unsupported wall height or length. Concrete and fire resistance.