Minimum Thickness Of Concrete Shear Wall

If i turn to section 21 9 special structural walls and coupling beams.

Minimum thickness of concrete shear wall.

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 diameter of bars is between 1 10 of the wall thickness. The 1965 national building code of canada nbcc 1965 subsection 4 5 8 requires a minimum thickness of 6 in.

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. The minimum ratios of horizontal and vertical reinforcement for the walls were 0 002 and 0 0012 respectively. I have a question on the minimum reinforcing for a special reinforced concrete shear wall.

Design considerations of the shear wall. Although a minimum thickness of 150 mm is possible for a wall it is recommended that 180 250 mm aid detailing and construction. A structural reinforced concrete shear wall in a 5 story building provides lateral and gravity load resistance for the applied load as shown in the figure below. Two curtain reinforcement is provided if.

Reinforced concrete shear wall analysis and design. 200 mm for basement and foundation walls. A wall s thickness is determined based on the forces it is being subjected to required fire resistance durability and buildability. Shear wall section and assumed reinforcement is investigated after analysis to verify suitability for the applied loads.

This is a small building 40 0 x40 0 so the loads are not very high at all. Concrete is naturally fire resistant and aci does not provide any details for minimum thickness for fire resistance. The thickness of the wall is between 150 mm to 400 mm. Factored shear stress is increase 0 25.

The required thickness was 8 in. Section 11 3 1 1 states that the minimum thickness shall be based on the shorter of either the unsupported wall height or length. I see table r21 9 1 governing design provisions for vertical wall segments. Minimum thickness of compression zone of special shear wall that is not tension controlled.

In the last post we derived the actions on the shear wall of a building. But as per constructability purposes it should be at least 12 inches thick and if you have coupling.