Div. B › Part 9 › 9.12 › 9.12.4 — Trenches Beneath Footings

9.12.4.1 — Compacting or Filling With Concrete

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(1) The soil in trenches beneath footings for sewers and watermains shall be compacted by tamping up to the level of the footing base, or shall be filled with concrete having a strength not less than 10 MPa to support the footing.

OBC Definitions

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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.

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