Page 193 - Masonry and Concrete
P. 193
Footings, Foundation Walls, Basements, and Slabs
192 CHAPTER SIX
FROST
DEPTH P P
OR MIN.
12"
6"
MIN.
W
SEE TABLE
MINIMUM WIDTH (W) OF CONCRETE FOOTINGS, IN.
Loadbearing Value of Soil, psf
1,500 2,000 2,500 3,000 3,500 4,000
Conventional Wood
Frame Construction
1 story 16 12 10 8 7 6
2 story 19 15 12 10 8 7
3 story 22 17 14 11 10 9
4-Inch brick veneer
over wood frame or
8-inch hollow
concrete masonry
1 story 19 15 12 10 8 7
2 story 25 19 15 13 11 10
3 story 31 23 19 16 13 12
8-inch solid or
fully grouted
masonry
1 story 22 17 13 11 10 9
2 story 31 23 19 16 13 12
3 story 40 30 24 20 17 15
FIGURE 6-4
Minimum requirements for concrete footings. (from Council of American Building Officials One and Two-Fam-
ily Dwelling Code, Falls Church, VA).
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