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1910.2 Classification of Shear Walls
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Detailed plain concrete shear walls are walls conforming to the requirements for ordinary plain concrete shear walls and shall have reinforcement as follows: Vertical reinforcement of at least 0.20 square inch (129 mm2) in cross-sectional area shall be provided continuously from support to support at each corner, at each side of each opening and at the ends of walls. The continuous vertical bar required beside an opening is permitted to substitute for one of the two No. 5 bars required by Section 220.127.116.11 of ACI 318. Horizontal reinforcement at least 0.20 square inch (129 mm2) in cross-sectional area shall be provided:
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