9.16.3. Drainage

9.16.3. Drainage
9.16.3.1. Control of Water Ingress
  1. Except as provided in Article 9.16.3.2. or where it can be shown to be unnecessary, ingress of water underneath a floor-on-ground shall be prevented by grading or drainage.
9.16.3.2. Hydrostatic Pressure
  1. Where groundwater levels may cause hydrostatic pressure beneath a floor-on-ground, the floor-on-ground shall be
    1. a poured concrete slab, and
    2. designed to resist such pressures.
9.16.3.3. Floor Drains
  1. When floor drains are required (see Section 9.31.), the floor surface shall be sloped so that no water can accumulate.