R505.3.6

Section R505.3.6 is titled 'Floor cantilevers' and covers requirements for floor construction. The allowance for cantilevers of limited dimension dependent on number of stories supported and whether joists are single or doubled, the minimum amount of backspan, and fastening requirements where joists are doubled is established. The purpose of this section is to prevent structural failure.

The model shows a partial floor section with a cantilever of doubled joists, which alternate between nested and back-to-back, with connecting fasteners highlighted (and slightly enlarged for visual clarity).