4.4
Unless site conditions otherwise dictate, no subsoil drainage
piping shall traverse a building area to reach an outfall. Where
a condition makes this imperative, use solid pipe with sealed
joints to traverse a building area.
4.5
Subsoil drains shall in no case be lower in elevation than the
base of adjacent footings. When an abrupt change in elevation of
footings occurs, drain tile shall lead away from building at the
higher elevation of the transition. The lower level shall be
separately drained.
5
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