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1、ANSI/BHMA A156.8-2005 Revision of A156.8-2000 AMERICAN NATIONAL STANDARD FOR DOOR CONTROLS - OVERHEAD STOPS AND HOLDERS SPONSOR BUILDERS HARDWARE MANUFACTURERS ASSOCIATION, INC. ANSI Approved November 18, 2005 AMERICAN NATIONAL STANDARDS INSTITUTE, INC. -,-,- 2 AMERICAN NATIONAL STANDARD An American
2、 National Standard implies a consensus of those substantially concerned with its scope and provisions. An American National Standard is intended as a guide to aid the manufacturer, the consumer, and the general public. The existence of American National Standard does not in any respect preclude anyo
3、ne, whether he has approved the standard or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standard. American National Standards are subject to periodic review and users are cautioned to obtain the latest editions. CAUTION NOTICE: Th
4、is American National Standard is permitted to be revised or withdrawn at any time. The procedures of the American National Standards Institute require that action be taken to reaffirm, revise, or withdraw this standard no later than five years from the date of publication. Purchasers of American Nat
5、ional Standards receive current information on all Standards by calling or writing the American National Standards Institute. Published by BUILDERS HARDWARE MANUFACTURERS ASSOCIATION, INC. 355 Lexington Avenue, New York, NY 10017 Copyright 2005 by the Builders Hardware Manufacturers Association, In
6、c. Not to be reproduced without specific authorization from B.H.M.A. Printed in the USA This standard was first published June 1970 by the Builders Hardware Manufacturers Association, Inc. It was entitled “Standard 311 BHMA Product Standards Section C, Door Controls - Overhead Holders.“ ANSI approva
7、l was secured under the Canvass Method. BHMA was accredited on 21 March 1983 by ANSI as a sponsor using the Canvass Method. FOREWORD (This foreword is not a part of ANSI A156.8). -,-,- 3 The general classification of builders hardware includes a wide variety of items which are divided into several c
8、ategories. To recognize this diversity, a sectional classification system has been established. Overhead Holders is one such section and this Standard is the result of the collective efforts of members of the Builders Hardware Manufacturers Association who manufacture this product. The total Product
9、 Standards effort is, therefore, a collection of sections, each covering a specific category of items. Performance tests have been established to insure safety, security and stability to which the public is entitled. There are no restrictions on design except as required to suit the type of product
10、desired. The BHMA recognizes that errors will be found, items will become obsolete, and new products, methods and material will be developed. With this in mind, the Association plans to update, correct and revise these Standards on a regular basis. In most cases products have been described in grade
11、 levels related to performance. Grade classifications indicate levels only within their own product category. Choice of grade and specific product should be made on the basis of utility, aesthetics, security objectives and end use desired. The BHMA numbers, which indicate types of hardware do not id
12、entify size or finish and are not intended to be used without necessary supplementary information. Individual manufacturers catalogs should be consulted. ORDERING INFORMATION BHMA standards, publications, and matchplates can be ordered at: - Search entire catalog, order printed or electronic versio
13、ns, and download electronic versions right to your computer. Call our Fulfillment Partner, Techstreet, at: Toll-free (800) 699-9277 (U.S. and Canada) Ph. (734) 913-3930 Fax (734) 913-3946 E-mail: Send mail to: BHMA c/o Techstreet 777 E. Eisenhower Parkway Ann Arbor, MI 48108 USA -,-,- 4 TABLE OF CO
14、NTENTS 1. GENERAL5 2. PERFORMANCE REQUIREMENTS . 5 3. FINISH TESTS. 7 4. TYPICAL OVERHEAD STOPS AND HOLDERS FUNCTIONS AND IDENTIFYING NUMBERS.8 5. EXPLANATION OF NUMBERING SYSTEM. 10 APPENDIX A.11 -,-,- 5 1. GENERAL 1.1 Scope 1.1.1 This Standard establishes requirements for overhead door stops and h
15、olders, and includes performance tests covering operational, cyclical, strength and finish criteria. 1.1.2 Tests described in this Standard are performed under laboratory conditions. In actual usage, results vary because of installation, maintenance and environmental conditions. 1.2 Definitions 1.2.
16、1 Overhead Holder A device surface mounted or concealed at the top of a door with a connecting arm attached to the door frame. It holds a door in a predetermined open position or positions and also limits the opening up to 110 degrees. 1.2.2 Overhead Stops A device surface mounted or concealed at th
17、e top of a door with a connecting arm attached to the door frame which only limits the opening travel of a door. 1.3 General Requirements 1.3.1 SI Units All dimensions are expressed first in US units with SI unit (metric) equivalents given in parentheses. SI units are approximate. 1.3.2 Tolerances A
18、ll values which do not carry specific tolerances or are not marked maximum or minimum shall have the following tolerances: Number of cycles shall be minimum. Linear dimensions shall be + 1/16 in. (1.6 mm). Pounds or pound force shall be + 2%. A tolerance of + 2 degrees F shall be applied to temperat
19、ure call outs. 1.3.3 Reference to ANSI Standards ANSI Standards are available from the American National Standards Institute, 11 West 42nd Street, New York, NY 10036 or . 1.3.4 Tests Required All Grades of stops and overhead holders are required to meet functional tests described in Section 2. All g
20、rades of overhead holders and stops are required to meet the applicable finish tests described in Section 3. 2. PERFORMANCE REQUIREMENTS 2.1 Test Procedures 2.1.1 All tests shall be performed on doors 36 in x 84 in x 1-3/4 in (914 mm x 2134 mm x 44 mm) of either wood or metal and weighing 150 lbs (6
21、8 kg). Use metal frames of heavy enough construction to withstand the abuse required by these tests. The center of gravity of the weighted door shall be 18 in (457 mm) from the center line of hinge or pivot. 2.1.2 Means for mechanically opening the door to the stop position and releasing and closing
22、 the door shall be provided for the tests. Opening speed shall be 0 to 90 degrees in 3 to 6 seconds. 2.1.3 Doors shall be hung on heavy weight ball bearing hinges or pivots meeting Grade 1 requirements of ANSI/BHMA A156.1 for Butts and Hinges. Force required to overcome friction or out of balance co
23、ndition shall be a 1/2 lbf (2.2 N) or less, measured in accordance with paragraph 2.1.4. -,-,- 6 2.1.4 All forces shall be applied to the door and readings shall be taken at a point 30 in (762 mm) from center line of hinge or pivot, at a height of 40 in (1016 mm) from the bottom of the door. 2.1.5 A
24、ll tests shall be conducted using a single stop or holder. Failure of the stop or holder to complete or meet the requirements of any part of the test shall constitute failure of test. 2.1.6 The Force Tests (2.3) shall be performed following completion of the Cycle Tests (2.2) 2.1.7 No lubrication sh
25、all be added to the stops or holders during these tests. 2.2 Cycle Test 2.2.1 Single Point Adjustable Hold Open Types Door holders with a single point hold open function shall be adjusted to withstand a minimum of a 15 lbf (67 N) perpendicular to door in direction of closing, without releasing. Door
26、s shall be mechanically pushed or pulled into hold open, and pulled or pushed back to a closed position for the requirements specified in 2.2.6. Adjustment shall be checked at 1/2 the total cycles required and readjusted to the 15 lbf (67 N), if necessary. At the end of the test, the force required
27、to close the door shall be not less than a 10 lbf (44 N) nor more than a 20 lbf (89 N), and shall be capable of readjustment to a 15 lbf (67 N). 2.2.2 Single Point Non-Adjustable Hold Open Types Door holders shall be capable of withstanding a minimum of a 15 lbf (67 N) perpendicular to the door in t
28、he direction of closing without releasing at the start of the test. Doors shall be mechanically pushed or pulled into hold open and pulled or pushed back to a closed position for the requirements specified in 2.2.6. At the end of one half the cycling period, they shall have a minimum holding force o
29、f a 10 lbf (44 N). At the conclusion of the cycle test they shall not have lost more than 50% of the original holding force. 2.2.3 Positive Type Holders less Automatic Release Feature Doors shall be mechanically pushed or pulled into hold open and mechanically released and closed for the requirement
30、s specified in 2.2.6. 2.2.4 Friction Slide Type Holders Frictional holders shall be adjusted to resist an 8 lbf (36 N) and readjusted to an 8 lbf (36 N) at the end of each 10,000 cycles. At the end of the test, holder shall be capable of readjustment to resist an 8 lbf (36 N) without the necessity o
31、f renewing the friction unit. Apparatus shall operate at a 15 second cycle 2 seconds. Total cycle test for the friction holders is specified in 2.2.6. 2.2.5 Non-Friction Slide or Stop Only Types These types that are without the hold open feature are required only to complete the cycle test in the ap
32、plicable grade. If they are of the same construction as single point or friction holders, they need not be tested separately. 2.2.6 Cycle Requirements Grade 1 Grade 2 Grade3 250,000 100,000 50,000 -,-,- 7 2.3 Force Tests 2.3.1 Door stops or holders shall be opened to the stop position and a static f
33、orce exerted against the door in the opening direction in accordance with paragraph 2.1.4. The door holder shall withstand the required force with no impairment of function to the hold open mechanism or the holder itself or both. Requirements Grade 1 Grade 2 Grade 3 300 lbf (1334 N) 200 lbf (890 N)
34、100 lbf (445 N) 2.3.2 Positive type holders that do not have an automatic release feature shall undergo the Force Test 2.3.1 in both opening and closing direction. 3. FINISH TESTS Finish tests shall be conducted in accordance with ANSI/BHMA A156.18-2000. Tests shall be conducted on arms, end caps, m
35、ounting brackets, and exposed channels only. Salt Spray Test Requirements Grade 1 Grade 2 Grade 3 48 hours 24 hours 12 hours Humidity Test Requirements For clear coatings only. Grade 1 Grade 2 Grade 3 48 Hours Pencil Hardness 2H Adhesion Classification 4 Method B 48 Hours Pencil Hardness 2H Adhesion
36、 Classification 4 Method B N/A -,-,- 8 4. TYPICAL OVERHEAD STOPS AND HOLDERS FUNCTIONS AND IDENTIFYING NUMBERS Type 1 Overhead Concealed Slide Holder: For single acting entrance, vestibule and interior doors opening to 110 degrees. Stop and shock absorber effective at all times. Hold open and releas
37、e by push or pull, except when exposed control is set in inactive position. Holding pressure adjustable. Available for double acting door application. Performance tests required: 2.2.1, 2.3.1 and 3. C01511 C01512 Type 1 Overhead Concealed Slide Stop: Same as C01511 and C01512 except without hold ope
38、n. Performance tests required: 2.2.5, 2.3.1 and 3. C01541 C01542 Type 2 Overhead Surface Mounted Slide Holder: For single acting entrance, vestibule and interior doors opening to 110 degrees. Stop with shock absorber effective at all times. Hold open and release by push or pull on door, except when
39、exposed control is set in inactive position. Holding pressure adjustable. Performance tests required: 2.2.1, 2.3.1 and 3. C02511 C02512 Type 2 Overhead Surface Mounted Slide Stop: Same as C02511 and C02512 except without hold open. Performance tests required: 2.2.5, 2.3.1 and 3. C02541 C02542 Type 3
40、 Overhead Surface Mounted Jointed Arm Holder: For single acting entrance, vestibule and interior doors opening to 110 degrees. Stop and shock absorber effective at all times. Hold open and release by push and pull on door. Control is capable of being set in inactive position. Performance tests requi
41、red: 2.2.2, 2.3.1 and 3. C03511 C03512 Type 3 Overhead Surface Mounted Jointed Arm Stop: Same as C03511 and C03512 except without hold open function. Performance tests required: 2.2.5, 2.3.1 and 3. C03541 C03542 Type 8 Overhead Surface Mounted Rod Holder: For single acting entrance, vestibule and in
42、terior doors opening 110 degrees. Stop and shock absorber effective at all times. Hold open and release by push and pull on door, except when roller cam is set in inactive position. Adjustable spring tension. Performance tests required: 2.2.1, 2.3.1 and 3. C08511 C08512 Type 8 Overhead Surface Mount
43、ed Rod Stop: Same as C08511 and C08512 except without hold open. Performance tests required: 2.2.5, 2.3.1 and 3. C08541 C08542 -,-,- 9 Type 9 Overhead Surface Mounted Cantilever Holder: For single acting entrance, vestibule and interior doors opening to 110 degrees. Stop and shock absorber effective
44、 at all times. Hold open and release by push and pull on door or thumb turn. Performance tests required: 2.2.2, 2.3.1 and 3. C09551 C09552 Type 9 Overhead Surface Mounted Cantilever Stop: Same as C09551 and C09552 except without hold open. Performance tests required : 2.2.5, 2.3.1 and 3. C09541 C095
45、42 Type 4 & 6 Overhead Concealed Friction Slide Holder: For either single or double acting interior doors opening to 110 degrees. Frictional element made of non-abrasive material and held under adjustable pressure. Free acting shoulder pivots. Shock absorber effective at all times. Performance tests
46、 required: 2.2.4, 2.3.1 and 3. C04531 C04532 C06533 Types 4 & 6 Overhead Concealed Non-Friction Slide Stop: Same as C04531, C04532 and C06533 except non-friction and stop only. Performance tests required: 2.2.5, 2.3.1 and 3. C04541 C04542 C06543 Types 4 & 6 Overhead Concealed Non-Friction Slide Hold
47、er: Same as C04541, C04541 and C06543 except with automatic hold open. Hold open and release by push and pull on door. Performance tests required: 2.2.1, 2.3.1 and 3. C04511 C04512 C06513 Type 5 & 7 Overhead Surface Mounted Friction Slide Holder: For single acting doors opening to 110 degrees. Frict
48、ional element made of non- abrasive material and held under adjustable pressure. Free acting shoulder pivots. Shock absorber effective at all times. Performance tests required: 2.2.4, 2.3.1 and 3. C05531 C05532 C07533 Type 5 & 7 Overhead Surface Mounted Non-Friction Slide Stop: Same as C05531, C05532 and C07533 except non-friction and stop only. Performance tests required: 2.2.5, 2.3.1 and 3. C05541 C05542 C07543 Type 5 & 7 Overhead