Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 23 - LAUNDERING AND DYEING ESTABLISHMENTS › Subchapter B - DRYCLEANING AND DYEING › CONSTRUCTION-GENERALLY › Section 23.93 - Class III buildings

Current through Register Vol. 54, No. 28, July 13, 2024
(a)
Walls.
The walls of drycleaning, dyeing, tumbler or drying
					 rooms shall be of fire-resistive construction, the walls of which may be of
					 brick, concrete block laid in cement mortar or of reinforced concrete at least
					 8 inches in thickness. Interior dividing partitions shall be of construction
					 equal to at least 2 hours fire resistivity.
(b)
Multiple story.
When a
					 drycleaning or dyeing room is located in a multiple story building, the
					 remainder of the building may not be used for purposes of public assembly or
					 for living, housing or dwelling purposes. The building shall be of
					 fire-resistive construction, the walls of which may be of brick, concrete block
					 laid in cement mortar or of reinforced concrete at least 8 inches in
					 thickness.
(c)
Roof.
The roof, ceiling or other construction shall be of
					 fire-resistive construction rated one hour fire-resistive as classified in
					 accordance with the Standard for Fire Tests of Building Construction and
					 Materials and listed by Underwriters' Laboratories, Inc. Hinged skylights of
					 metal sash and wire glass shall be placed in the roof of each drycleaning or
					 dry-dyeing room. They shall occupy an area equal to at least 1/8 the floor area
					 of the room. Skylights shall open under pressure in case of an explosion and
					 close automatically thereafter. The roof covering shall be of incombustible
					 material.
(d)
Floor.
The floor of every drycleaning, dyeing, tumbler or drying room shall
					 be of concrete construction at least four inches in thickness and shall not be
					 lower than the surface of the earth surrounding any wall in which there is an
					 opening or vent. If any such room is located over a basement, the floor of such
					 room shall be liquid and vapor tight.
(e)
Doors and windows.
All
					 doors shall be at least class B self-closing fire doors as classified by the
					 Underwriters' Laboratories, Inc. All window openings shall be protected with
					 metal sash and wire glass. Doors and windows shall open outward.
(f)
Intercommunicating openings.
Intercommunicating openings from drycleaning, tumbler and drying
					 rooms shall be provided with fire-resistive, self-closing doors, classified by
					 Underwriters' Laboratories B label or better.
(g)
Egress.
Any room used
					 for the purpose of drycleaning or dyeing shall have at least one exit which
					 opens to the outside of the building or to an interior fireproof fire
					 structure. No less than two means of egress shall be provided. They shall be
					 unobstructed and ready for use at all times.
(h)
Sewer connection.
There
					 shall be no direct sewer connection with the drycleaning, tumbler or dyeing
					 room.
(i)
Basement cellar.
Any basement, cellar or open space below the first story of any
					 building in which a drycleaning plant is located shall be used only by the
					 person, partnership or firm operating such plant.
(j)
Exhaust fan.
There shall
					 be installed in such basement, cellar or open space, an exhaust fan of
					 sufficient capacity, and a flue or flues of noncombustible material adequate to
					 prevent concentration of vapors above the maximum concentrations as specified
					 in this subchapter for drycleaning or dyeing rooms.