15-12-110 Classification of doors and shutters.

   Doors and shutters shall be classified in accordance with their fire-resistive qualities in accordance with requirements of this section.

   (a)   Class A Doors and Shutters.

      (1)   Class A doors and shutters shall be used for protection of openings in firewalls and shall be installed on both sides of walls.

      (2)   There shall be no glass panels in Class A doors and shutters.

   (b)   Class B Doors and Shutters.

      (1)   Class B doors and shutters shall be used where required elsewhere in this Code for protection of openings in vertical shafts and other openings.

      (2)   Class B doors may have an observation panel of standard wired glass having an exposed area not exceeding 100 square inches and a width or height not exceeding 12 inches.

   (c)   Class C Doors.

      (1)   Class C doors shall be used where required elsewhere in this Code for protection of openings between rooms or between rooms and corridors.

      (2)   Class C doors may have panels of standard wired glass. Exposed area of individual glass lights shall not exceed 1,296 square inches.

   (d)   Class D and E Doors and Shutters.

      (1)   Class D and E doors and shutters shall be used where required elsewhere in this Code for protection of openings in exterior walls.

      (2)   Glass lights for panels shall not be used in Class D doors. Panels of standard wired glass having an area not exceeding 720 square inches and a height not exceeding 54 inches may be used in Class E doors.

(Prior code §  65-5.4)