June 99
01.
FOUNDATIONS
This element includes all work below the level of the lowest floor
construction (usually slab on grade). It is sub-divided at level B into:
- Standard Foundations
- which includes regular type
spread footing foundations
- Special Foundations Conditions
- which includes piling and
caissons, underpinning,
dewatering, raft foundations, etc.
The section includes foundation walls up to the top of the lowest floor
construction, but excludes slab on grade. Includes any excavation
necessary to reduce levels or to form basements, or any backfillinq to
generally raise levels.
Note that rock excavation is considered a special abnormal condition and
is to ho included with special foundation work.
All earth work associated with site development is included in section 12
(Site Work).
02.
SUBSTRUCTURE
This element includes the enclosing horizontal and vertical elements
required to form a basement, together with the necessary mass
excavation.
At level B it is subdivided into:
-Slab on Grade
- including all underfill, foundation
drainage, trenches in slab, pits and bases.
- Basement Walls
- including required moisture protection.
The section does not include any suspended structural slabs and
supporting interior walls and columns contained within basements, which
are to be carried in section 03.
In cases where slopping site conditions create variable basement levels,
note that only basement walls below grade are to be carried in this
section. All other walls above grade are to be included in section 04.
The items included in this section can perhaps best be described by the
term "bath tub", comprising essentially basement walls.
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