ANSI BHMA A156-4:2000 pdf download.AMERICAN NATIONAL STANDARD FOR DOOR CONTROLS - CLOSERS
1.SCOPE
1.1 ANSI BHMA A156-4 contains requirements for door closers surface mounted, concealed in the door, overhead concealed and concealed in the floor. Also included are pivots for floor closers. Criteria for conformance include cycle, operational, closing force and finish tests. Optional tests which shall be specified separately are also included.
1.2 Tests in this Standard are performed under laboratory conditions. In actual usage results vary because of installation, maintenance, and environmental conditions.
1.3 Use on Fire Doors. A door closer used on labeled fire door assemblies shall be listed or labeled by a nationally recognized independent testing laboratory, and be subject to a periodic in-plant follow-up service. Consult the authority having jurisdiction for the appropriate fire test requirements.
2.GENERAL
2.1 Reference to other Standards. ANSI Standards referenced in this Standard are available from the American National Standards Institute, 11 West 42nd Street, New York, NY 10036.
2.2 Type Numbers. This Standard has been prepared to standardize door closers and controls by type requirements and performance levels. Only those type numbers shown in this Standard shall be used. For explanation of identifying numbers, see 11.13.
2.3 Manufacturer's Catalogs. Consult manufacturer's catalogs for construction details and special conditions relating to accessories.
4.1.1 Weight: The test door weight shall be as specifed in 4.1.1.1. Center of gravity of the weighted door shall be 18 in (457 mm) from the pivot center of the door for size 2 or larger closers and 15 in. (381 mm) for size 1 closers. For light screen or combination storm door closers test door weight shall be 30 lbs (13.6 kg). Door weight is for test purposes only. Consult Table Al for installation criteria.
4.1.2. Mounting: Doors shall be hung on hinges, accurately aligned with vertical pins or on offset or center pivots, if required by the door closer. Force required to overcome friction or out of balance condition shall be a 1/4 lbf. (1.1 N) or less throughout the test measured perpendicular to the face of the door at a point 30 in (762 mm) from pivot center. Forces required to overcome friction or out of balance conditions are permitted to be greater than a 1/4 lbf. (1.1 N) if acceptable to closer manufacturer. Top jamb mounting shall be 2 in±1/8 in (51 ± 3 mm) reveal. Any force due to hinge friction shall not be used to adjust test data.ANSI BHMA A156-4 pdf download.