bar bending schedule area and volume formula
of the cross-sectional areas of all reinforcement bars used in a specific element, such as beams, columns, slabs, or foundations. Calculation: \[ A_s = \sum_{i=1}^{n} \left( \frac{\pi}{4} \times d_i^2 \times n_i \right) \] Where: \(A_s\) = total steel reinforcement