Div. B › Part 4 › 4.2 › 4.2.7 — Deep Foundations

4.2.7.1 — General

Copied! ▲ ▼

(1) A deep foundation unit shall provide support for a building by transferring loads by end-bearing to a competent stratum at considerable depth below the structure, or by mobilizing resistance by adhesion or friction, or both, in the soil or rock in which it is placed.

OBC Definitions

Defined terms on this page

deep foundation

means a foundation unit that provides support for a building by transferring loads either by end-bearing to a soil or rock at considerable depth below the building or by adhesion or friction, or both, in the soil or rock in which it is placed. Piles are the most common type of deep foundation.

foundation

means a system or arrangement of foundation units through which the loads from a building are transferred to supporting soil or rock.

foundation unit

means one of the structural members of the foundation of a building, such as a footing, raft and pile.

rock

means a portion of the earth’s crust that is consolidated, coherent and relatively hard and that is a naturally formed, solidly bonded, mass of mineral matter that cannot readily be broken by hand.

soil

means , except for the purposes of Part 8 of Division B, a portion of the earth’s crust that is fragmentary or such that individual particles of a dried sample may be readily separated by agitation in water, and includes boulders, cobbles, gravel, sand, silt, clay and organic matter.

building

(a) a structure occupying an area greater than ten square metres consisting of a wall, roof and floor or any of them or a structural system serving the function thereof including all plumbing, works, fixtures and service systems appurtenant thereto,
(b) a structure occupying an area of ten square metres or less that contains plumbing, including the plumbing appurtenant thereto,
(c) plumbing not located in a structure,
(c.1) a sewage system, or
(d) structures designated in the building code; Act

On this page