Is TB 133 required in sprinklered buildings?
A. In California, TB 133 is voluntary or discretionary in any facility which is fully sprinklered in accordance with NFPA 13-1987 or UBC Standard No.38-I, 1988. In this type of facility a manufacturer may choose to comply with TB 133, but it would not be a mandatory requirement. However, in California, even in sprinklered facilities, seating furniture must comply with California TB 117, which is the minimum standard in the state. In other states, where TB 117 does not exist, granting an exemption for sprinklered buildings will be more difficult since those states have no alternative standard, such as TB 117. Also, before deciding not to comply with TB 133 in sprinklered buildings, manufacturers and others may wish to contact their attorney.
