R403.3.1.1

Section R403.3.1.1 is titled 'Attachment to unheated slab-on-ground structure' and covers requirements for footing construction. Cross-references to a figure and table in this code, details for the installation and bearing capacity of the insulation for the frost-protected shallow foundation, and where the insulation is not capable of withstanding the imposed loads, details for the construction of the attached unheated structure is established. The purpose of this section is to prevent structural failure.

The model shows an unheated attached garage translucent foundation and slab section adjoining a frost-protected shallow foundation of a dwelling. (Reinforcement is not shown for clarity.)