Find the depth of neutral axis of singly reinforced beam of breadth 230mm
reinforced with 4 bars of 16mm dia. Materials used are M20 and Fe 415.
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tiffybcijh230×415=÷4 _£
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Therefore, the depth of the neutral axis has a limiting or maximum value = x u, max. Accordingly, if the Ast provided yields x u > x u, max, the section has to be redesigned. Since x u de p ends on the area of steel, we can calculate Ast, lim from Eq. 3.17.
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