§ 263. Fireproof partition or fire partition. "Fireproof partition" or
"fire partition" means a partition built of brick, or concrete, or
reinforced concrete, or cinder block, or concrete block, or tile, or
terra cotta blocks conforming with the requirements of the board. The
board shall determine and specify in its rules such other materials as
may be used and such requirements as are necessary for the construction
of fire partitions and the protection of supporting metal framework.

Each opening in any fire partition shall have a fire door unless
otherwise specified by the board in its rules.