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Optimization of Reinforcement

Last updated: February 01, 2022
SettingDescription
Flexure Reinforcement The flexure reinforcement is selected using the same concepts as the spread footing. However, due to the nature of continuous footing design, transverse reinforcement is permitted to be a different size from the longitudinal reinforcement. The Longitudinal Top bar segments are taken between columns. The Longitudinal Bottom bar segments are taken centered at the column and continuing to the center of each span as required. If a minimum moment is found to be in the middle third of a span it will be used rather then the span's midpoint. Transverse reinforcement segments are taken at column segments, which have the width B' indicated in Section 5.11.3, Flexure Capacity for Continuous Footings. The center span transverse segments are taken between column segments.
Shear Reinforcement For shear reinforcement the footing span between columns is divided into between 3 to 5 segments depending on the length of the segments. If two adjacent segments are found to be too small to practically change the shear reinforcement, the sections are merged.

The cantilevers at either end of the footing are divided into a maximum of 3 segments.

Typical Continuous Footing Reinforcement Detailing