(A) Height. All piles shall be placed so that 100% of the pile above ground level shall be compensated by an equal amount below ground level. In no case shall the pile be less than eight feet below ground level and a minimum of two feet below mean sea level. All piles shall be placed so that the bottom of the lowest supporting structural member, exclusive of piles, of the first habitable floor level of the structure shall be 14.7 feet above mean sea level. This determination being made by obtaining reference points from the bench mark map in the Building Inspector's office. Longer piles may be required if the Building Inspector deems such necessary.
(B) Type. Wood piles, reinforced concrete, or steel piles may be used. All wood piles shall be of acceptable grade, a minimum of nine inches across on round piles and eight inches by eight inches for square piles. They shall be treated with a minimum of 18 pounds creosote per square foot or .6 cca per cubic foot. Concrete and steel piles shall be certified as to stress and bearing capacities.
(C) Spacing and bracing. The maximum center to center spacing of wood piles shall not be more than eight feet on centers under load bearing sills. However, on two story or larger structures the Building Inspector may require the piles to be spaced closer. Variation on spacing may be allowed where plans are prepared by a registered architect or engineer and said party will supply a certificate stating that the design is based upon adequate stability under storm conditions both in bearing and uplift. When bracing is required it shall be a minimum of two-inch by six-inch bracing X'd and double bolted.
(Ord., passed 1-22-77; Am. Ord. 1845, passed 6-22-23) Penalty, see § 152.999