15-8-490 Heavy timber construction.

   (a)   In buildings of heavy timber construction, all wood finished flooring and subflooring shall be applied directly to the floor construction or may be attached to sleepers of combustible materials provided that the space between the floor construction and the finished flooring is solidly filled with noncombustible materials.

   (b)   Combustible composition flooring not exceeding one-half inch in thickness may be applied directly to the floor construction or to subflooring.

   (c)   When the subflooring and the structural elements are of fire-retardant wood, the space between the floor construction and the subflooring need not be filled.

(Prior code §  62-10.4)