Page 210 - Masonry and Concrete

Footings, Foundation Walls, Basements, and Slabs
209
FOOTINGS, FOUNDATION WALLS, BASEMENTS, AND SLABS

of the foundation wall (Figure 6-21). This will allow room for support
of the veneer on the top of the foundation wall.
Figure 6-14 or 6-15 may be used to design concrete and masonry
foundation walls except when any of the following conditions exist:

■ The building official has determined that suitable backfill mate-
rial is not available.

■ Walls are subject to hydrostatic pressure from groundwater.

MAX 12"

MORE THAN 4'-0" UNBALANCED BACKFILL #4 STEEL

REINFORCING
BARS

8" 48"
MIN MAX

FIGURE 6-18

Minimum requirements for foundation walls in Seismic Zones 3 and 4 supporting more
than 4 ft. of unbalanced backfill. (from Council of American Building Officials One and
Two-Family Dwelling Code, Falls Church, VA).

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