Page 188 - Masonry and Concrete

Source: Masonry and Concrete

6
CHAPTER

Footings, Foundation Walls,

Basements, and Slabs

ost residential construction today is supported on either concrete
Mslabs-on-grade or on concrete or masonry foundations. There are a
number of different foundation types, each of which must provide
both the strength and stability to support the weight of the structure,
its contents and occupants, as well as wind and snow loads that are
transferred to the foundation by the structure.

6.1 Building Code Requirements

Most jurisdictions prescribe minimum building code requirements for
the construction of residential foundations. The following basic
requirements from the CABO One and Two Family Dwelling Code are
fairly representative of those found in many municipalities.

■ Fill material which supports footings and foundations must be
designed, installed, and tested in accordance with accepted
engineering practice.

■ The grade away from foundation walls must fall a minimum of
6 in. within the first 10 ft. Where lot lines, walls, slopes, or other
physical barriers prohibit the minimum slope, drains or swales
must be provided to ensure drainage away from the structure.

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