BHMA - Builders Hardware Manufacturers Association Inc.
Scope
This Standard establishes requirements for lightweight@ standard weight@ heavy weight and detention hinges. Cycle tests@ lateral and vertical wear tests@ friction tests@ strength tests@ finish tests@ and material and dimensional requirements are included.Tests described in this Standard are performed under laboratory conditions. In actual usage@ results vary because of installation@ maintenance and environmental conditions.Consult NFPA 80 - 1999 for Fire Doors and Windows concerning hinge requirements for fire doors.