All basements and habitable spaces below grade level shall be damp proofed or waterproofed as hereinafter prescribed, so as to adequately protect against the infiltration of dampness, moisture or water.
(A) Foundation drains. In those areas where the average sub-surface water table is less than three feet below the basement floor, or where the nature of the soil presents a sub-surface drainage problem, foundation drain tile shall be installed. All such installations shall be approved by the Building Inspector prior to such installation.
(B) Waterproofing. In those areas where the average sub-surface water table is not more than six inches below the basement floor, a membrane shall be installed so as to prohibit the passage of moisture or dampness into the basement or habitable area. All installations proposed under this division shall be approved by the Building Inspector prior to such installation.
(C) Damp-proofing. In those areas where the average sub-surface water table lies more than three feet below the basement floor, only damp-proofing shall be required. Such damp proofing shall consist of one of the following:
(1) One coat of Portland cement parging, 3/8 inch thick, troweled onto masonry walls from top of footings to the finish grade line;
(2) One or more coats of bituminous materials, sprayed, brushed or troweled onto masonry walls, in accordance with the recommendations of the manufacturer thereof, from the footings to the finish grade line. Provided, however, the foundation damp proofing required by this division may be omitted, with the approval of the Building Inspector, in areas where well-drained soils exist and where the average sub-surface water lies more than eight feet below the basement floor.
(`89 Code, § 20.100)