Bulletin CA 133 Specifies the Flammability Test Procedure for Seating Furniture for Use in Public Occupancies. In California, Technical Bulletin 133 became effective March 1, 1992 and is designed to only cover seating furniture used in public buildings or public occupancy areas. The regulation applies to prisons and jails, health care facilities, hospitals, care and board homes, convalescent homes, stadiums, auditoriums, licensed child care facilities, and public assembly areas of hotels and motels. A public occupancy area is defined as an area containing ten or more articles of seating furniture. California Technical Bulletin 133 was not intended to apply to motel and hotel guest rooms or to residential furniture. The state of California also makes compliance with TB 133 voluntary or discretionary in any fully sprinklered facility (which complies with NFPA 13 – 1987 or UBC Standard No. 38-1, 1988).