bill1952
SAWHORSE
R403.1 (2021 and I think 2018 at least) says "All exterior walls shall be supported on continuous solid or fully grouted masonry or concrete footings, crushed stone footings, wood foundations, or other approved structural systems that shall be of sufficient design..."
What is a "fully grouted masonry foundation"? Looking at 2009 suggests a little more but frankly, I have been looking for a week or two to find out if I can use cmu for a footer or even what was intended by the code phrase. Does a 12" block below frost depth with an 8" stem wall, all fully grouted, qualify? (Seismic zone B) Thought about a 12" cmu bond beam at bottom course. Slab on grade unheated 1000 sf 1 storey no attic or storage above grade garage in 60 psf snow load country fwiw. Would like to avoid the work and costs of two concrete deliveries and forming footers, and dislike the idea of burying $1500+ of XPS, and trying to avoid the pole barn approach.
What is a "fully grouted masonry foundation"? Looking at 2009 suggests a little more but frankly, I have been looking for a week or two to find out if I can use cmu for a footer or even what was intended by the code phrase. Does a 12" block below frost depth with an 8" stem wall, all fully grouted, qualify? (Seismic zone B) Thought about a 12" cmu bond beam at bottom course. Slab on grade unheated 1000 sf 1 storey no attic or storage above grade garage in 60 psf snow load country fwiw. Would like to avoid the work and costs of two concrete deliveries and forming footers, and dislike the idea of burying $1500+ of XPS, and trying to avoid the pole barn approach.