Symmetrically reinforced rectangular columns

Figures 13.2(a) to (e) give non-dimensional design charts for symmetrically reinforced columns where the reinforcement can be assumed to be concentrated in the corners. The broken lines give values of K in Eqn 4.73 of EC2. Eqn 4.73

Where the reinforcement is not concentrated in the corners, a conservative approach is to calculate an effective value of d' as illustrated in Figure 13.3.

Ec2 Reinforced
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