Compression reinforcement

Compression reinforcement is required in any section where n > /¿|im. The amount can be calculated from

«' = mechanical ratio of compression steel

ck d' = depth from compression face to centroid of compression reinforcement

A' = area of compression reinforcement The area of tension reinforcement can now be obtained from

Equations above for w' and o> are valid for d'lx < 1 - fy/805.

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