(a) Sills shall be of the box or solid type of construction.
(b) All sill plates on top of foundation walls and piers shall be leveled and sealed in mortar or shall rest on a hard, dense, impregnated fiber or other approved material.
(c) Box sills shall consist, except as herein provided, of not less than a two-inch by eight-inch piece laid flat and a piece of the same dimension as the joist, set on edge and securely spiked to the plate. When there is a thickness of not less than four inches of solid masonry under a sill, the piece laid flat may be not less than two inches by six inches. At least two 16d common nails shall be used through the upright of the sill to nail the sill to each joist end.
(d) For solid sills, the upright of the sill may be omitted and the studding shall have full bearing on the wall plate. Solid bridging, of the same thickness and depth as the joists, shall be placed and securely nailed between the joists at the inside face of the foundation so as to form an effective fire stop for the space between the studding, joists and outside wall sheathing.
(e) Where studding does not bear directly on the wall plates and the floor joists run parallel to the foundation wall, solid bridging or blocking, of the same thickness and depth as the upright of the sill, shall be placed between the upright of the sill and the first joist running parallel to the wall, at intervals of not to exceed three feet and under all concentrated loads in the outside wall. The upright of the sill shall be spiked to such bridging or blocking with not less than two 16d common nails and the first joist shall be spiked to the other end of the bridging in the same manner. A joist running parallel with the plate may be used in lieu of the bridging above, provided said joist has not less than one-half inch bearing on the full length of the plate.
(Ord. 42-1981. Passed 2-23-81.)