Section 7.342. Shaftway construction

(a) Fire-resistive enclosures shall be provided as follows:

(1) New installations. The shaftways of dumbwaiters installed subsequent to December 15, 1924, with car travel of over two stories shall be of fire-resistive construction.

(2) Existing installations. The shaftways of dumbwaiters erected after July 1, 1916, and prior to December 15, 1924, shall be constructed of fire-resistive material as follows:

(i) In buildings of frame construction where car travel is over two stories.

(ii) In buildings of ordinary construction where car travel is over three stories.

(iii) In buildings of fire-resistive construction where car travel is over four stories.

(b) In each case where fire-resistive construction is not required in both existing and new installations, shaftways shall be enclosed on all sides not used for loading or unloading from the floor to a height of at least 6 feet. On sides used for loading or unloading, the enclosure shall extend from the floor to the ceiling, except the space required for doors or gates. If, in the judgment of the Department, such shaftways present a fire hazard they shall be entirely enclosed with fire-resistive material.

(c) Ordinary enclosures for dumbwaiter shaftways may be of wire mesh, not less than No. 10 standard steel wire gauge (0.135 inch) or expanded metal, not less than No. 13 U.S. gauge (0.09375 inch). Openings in the mesh shall not exceed 1 1/2 inches. The open spaces in grillework shall not be in excess of 1 1/2 inches between any two members. When straight bars are used which are not filled in with scroll work, there shall not be more than 1 inch space between bars. When wood slats are used they shall not be less than 1 1/2 inches in width by 3/8 inch thick, with a 1 inch space between slats. Such enclosures shall be properly and securely braced and fastened.

The provisions of this § 7.342 amended September 23, 1977, 7 Pa.B. 2696. Immediately preceding text appears at serial page (8165).