Why should the thickness of reinforced concrete shear walls not be less than 1/25 of the floor height
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Why should the thickness of reinforced concrete shear walls not be less than 1/25 of the floor height
The strength grade of the cast-in-place reinforced concrete for shear walls should not be lower than C20. When designed for seismic resistance level 1, the thickness of shear walls should not be less than 1/20 of the floor height, and should also not be less than 160 mm； For seismic resistance grades 2, 3, and 4, as well as in non-seismic designs, it should be no less than 1/25 of the floor height, and not less than 140 mm. When there is a frame, the thickness of the shear wall should be no less than 1/30 of the net height of the wall, and not less than 120 mm ； When there is no frame, the thickness of the shear wall shall not be less than 1/25 of the floor height, and shall not be less than 140 mm.
The strength grade of the cast-in-place reinforced concrete for shear walls should not be lower than C20. When designed for seismic resistance grade 1, the thickness of shear walls shall not be less than 1/20 of the floor height, and shall not be less than 160 mm ； For seismic resistance grades of two, three, and four, and in cases of non-seismic design, it shall not be less than 1/25 of the floor height, and shall also not be less than 140 mm. When a frame is present, the thickness of the shear wall should not be less than 1/30 of the net height of the wall, and it should also not be less than 120 mm ； When there is no frame, the thickness of the shear wall shall not be less than 1/25 of the floor height, and shall not be less than 140 mm.