R403.1.3.1

Section R403.1.3.1 is titled 'Concrete stem walls with concrete footings' and covers the requirements for installing reinforcing bar in concrete foundations, which have a construction joint between the footing and the stem wall, in seismic design categories D₀, D₁, and D₂. The locations, bar size, spacing, embedment depth, hook, support, and concrete cover of reinforcing bar is established. The purpose of this section is to prevent structural failure.

The model shows a section of an x-rayed foundation with the reinforcing bar placed in accordance with this section.