§ 9-192. Overall stability.

A floating home shall be stable under the action of dead and live loads and consideration shall be given to the effect of off-center loading and wind loading in determining overall stability. The design of a floating home shall be based upon accepted basic engineering principles for floating structures and to the following standards:

(1)

Metacentric height. The metacentric height (MG) shall be at least one (1) foot or greater.

(2)

Freeboard; immersion. The freeboard, as measured from the waterline to the top of the first floor or deck of the completed floating home, including dead load but not live load, shall be at least one (1) foot, four (4) inches (with list angles equal to zero (0) degree). The allowable immersion under the action of off-center loading or wind loading shall not exceed two-thirds of the original freeboard with a list angle of four (4) degrees. Freeboard shall be measured from the waterline to the top of the first floor or deck at the side of the floating home at a point where such freeboard has its least dimension.

(3)

List angle. The maximum angle of list shall not exceed four (4) degrees under the action of either off-center or wind loading.

(4)

Off-center loading. The off-center loading shall be considered as applicable to the completed floating home, including dead load, and shall consist of a line load of one hundred (100) pounds or five (5) pounds per foot of width, whichever is greater, per lineal foot (first floor) and fifty (50) pounds, or two and one-half (2.5) pounds per foot of width, whichever is greater, per lineal foot (second floor, habitable attic or loft). The uniform line load is to be applied halfway between the center of gravity and the outside edge of deck, to one (1) side of the floating home at a time. The dividing line is the longitudinal axis of the floating home, and the overturning moment resulting from the off-center loading shall be taken about the computed center of gravity. Stability with off-center loading shall be tested on both sides of the longitudinal axis. The ratio, MR/MO, MO being the overturning moment due to off-center loading, and MR being the resisting moment due to buoyancy, shall be equal to one (1) applied with a list equal to four (4) degrees. Overturning moments and resisting moments are to be taken about a longitudinal line passing through the computed center of gravity.

(5)

Wind loading. Wind loading shall be applied to the completed floating home, including dead load and live load, but not off-center loading. The ratio, MR/MN, MN being the wind heeling moment, and MR being the resisting moment due to buoyancy, shall be equal to one (1) applied with a list equal to four (4) degrees.

(6)

Calculations by qualified engineer. Calculations shall be submitted by a qualified engineer showing that the floating home conforms to the requirements of this article.

(Code 1953, § 48-33; Ord. No. C-74-72, § 1, 7-2-74)