Page Comparison

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Notation

A_b = area of an individual bar or wire, in.²
f_y = specified yield strength of nonprestressed reinforcement,psi
h = overall thickness, height, or depth of member, in.
l_d = development length in tension of deformed bar, deformed wire, plain and deformed welded wire reinforcement, or pretensioned strand, in.
l_u = unsupported length of column or wall, in.
s = center-to-center spacing of items, such as longitudinal reinforcement, transverse reinforcement, tendons, or anchors, in.

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Longitudinal reinforcement is selected as 1.25l_d ≤ l_u/2, over the column net height.

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