1、ANSI/BHMA A156.8-2015 Revision of ANSI/BHMA A156.8-2010 AMERICAN NATIONAL STANDARD FOR DOOR CONTROLS - OVERHEAD STOPS AND HOLDERS AMERICAN NATIONAL STANDARDS INSTITUTE Approved December 25, 2015 SPONSOR BUILDERS HARDWARE MANUFACTURERS ASSOCIATION, INC. 2 AMERICAN NATIONAL STANDARD An American Nation
2、al 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 anyone, whe
3、ther 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: This Amer
4、ican National Standard is permitted to be revised or withdrawn at any time.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 National S
5、tandards 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 2015 by the Builders Hardware Manufacturers Association, Inc. Not
6、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 approval was s
7、ecured under the Canvass Method. BHMA was accredited on 21 March 1983 by ANSI as a sponsor using the Canvass Method. 3 FOREWORD (This foreword is not a part of ANSI A156.8). The general classification of builders hardware includes a wide variety of items which are divided into several categories. To
8、 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 Standards ef
9、fort 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 desired. The
10、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 levels relat
11、ed 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 identify size o
12、r finish and are not intended to be used without necessary supplementary information. Individual manufacturers catalogs should be consulted. 4 TABLE OF CONTENTS 1. GENERAL 5 2. PERFORMANCE REQUIREMENTS . 5 3. FINISH TESTS . 7 4. TYPICAL FUNCTIONS AND IDENTIFYING NUMBERS . 8 5. EXPLANATION OF NUMBERI
13、NG SYSTEM . 10 APPENDIX A . 11 5 1. GENERAL 1.1 Scope 1.1.1 This Standard establishes requirements for overhead door stops and holders, and includes performance tests covering operational, cyclical, strength and finish criteria. 1.1.2 Tests described in this Standard are performed under laboratory c
14、onditions. In actual usage, results vary because of installation, maintenance and environmental conditions. 2 DEFINITIONS 2.1 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
15、or positions and also limits the opening up to 110 degrees. 2.2 Overhead Stops A device surface mounted or concealed at the top of a door with a connecting arm attached to the door frame which only limits the opening travel of a door. 3 GENERAL REQUIREMENTS 3.1 SI Units All dimensions are expressed
16、first in US units with SI unit (metric) equivalents given in parentheses. SI units are approximate. 3.2 Tolerances All 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
17、 + 1/16 in. (1.6 mm). Pounds or pound force shall be + 2%. A tolerance of + 2 degrees F shall be applied to temperature call outs. 3.3 Reference to ANSI Standards ANSI Standards are available from the American National Standards Institute, www.ansi.org, or the Builders Hardware Manufacturers Associa
18、tion . 3.4 Tests Required All Grades of stops and overhead holders are required to meet functional tests described in Section 4. All grades of overhead holders and stops are required to meet the applicable finish tests described in Section 5. 4. PERFORMANCE REQUIREMENTS 4.1 Test Procedures 4.1.1 All
19、 tests shall be performed on a door weighing 150-lbs (68-kg) with the center of gravity 18 in. from the hinge or pivot centerline of rotation. The door must accommodate a load application point 30 in. from the hinge or pivot centerline of rotation. 6 4.1.2 Means for mechanically opening the door to
20、the stop position and releasing and closing the door shall be provided for the tests. Opening speed shall be 0 to 90 degrees in 3 to 6 seconds. 4.1.3 Doors shall be hung on heavy weight ball bearing hinges or pivots Force required to overcome friction or out of balance condition shall be a .5 lbf (2
21、.2 N) or less, measured in accordance with paragraph 4.1.4. 4.1.4 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. 4.1.5 All tests shall be conducted using a single stop or holder. Failure of the stop or holder to compl
22、ete or meet the requirements of any part of the test shall constitute failure of test. 4.1.6 The Force Tests (4.3) shall be performed following completion of the Cycle Tests (4.2). 4.1.7 No lubrication shall be added to the stops or holders during these tests. 4.2. Cycle Test 4.2.1 Single Point Adju
23、stable Hold Open Types At the start of the test, with closer arm disconnected, 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. Doors shall be mechanically pushed or pulled
24、 into hold open, and pulled or pushed back to a closed position for the requirements specified in 4.2.6. Adjustment shall be checked at 1/2 the total cycles required and readjusted to the original holding force if necessary. At the conclusion of cycling, the force required to close the door shall be
25、 not less than a 10 lbf (44 N), the door holder shall not have lost nor gained more than 33% of the original holding force, and shall be capable of readjustment to the original holding force. 4.2.2 Single Point Non-Adjustable Hold Open Types Door holders shall be capable of withstanding a minimum of
26、 a 15 lbf (67 N) perpendicular to the door in the 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 4.2.6. At the end of one half the cycling pe
27、riod, they shall have a minimum holding force of 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. 4.2.3 Positive Type Holders Doors shall be mechanically pushed or pulled into hold open and mechanically released and closed for
28、 the requirements specified in 4.2.6. 4.2.4 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
29、 the necessity of renewing the friction unit. Apparatus shall operate at a 15 second cycle 2 seconds. Total cycle test for the friction holders is specified in 4.2.6. 4.2.5 Non-Friction Slide or Stop Only Types These types that are without the hold open feature are required only to complete the cycl
30、e test in the applicable grade. If they are of the same construction as single point or friction holders, they need not be tested separately. 7 4.2.6 Cycle Requirements Grade 1 Grade 2 Grade3 250,000 100,000 50,000 4.3 Force Tests 4.3.1 Door stops or holders shall be opened to the stop position and
31、a static force 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 lb
32、f (890 N) 100 lbf (445 N) 4.3.2 Positive type holders feature shall undergo the Force Test 4.3.1 in both opening and closing direction. If a closer is utilized for door control during cycle testing, disconnect door closer arm before performing any force test. 5. FINISH TESTS Finish tests shall be co
33、nducted in accordance with ANSI/BHMA A156.18-2012. Tests shall be conducted on arms, end caps, mounting 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
34、Hours Pencil Hardness 2H Adhesion Classification 4 Method B 48 Hours Pencil Hardness 2H Adhesion Classification 4 Method B N/A 8 6. TYPICAL OVERHEAD STOPS AND HOLDERS FUNCTIONS AND IDENTIFYING NUMBERS Type 1 Overhead Concealed Slide Holder: For single acting entrance, vestibule and interior doors op
35、ening to 110 degrees. Stop and shock absorber effective at all times. Hold open and release 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: 4.2.1, 4.3.1 and 5. C01511 C015
36、12 Type 1 Overhead Concealed Slide Stop: Same as C01511 and C01512 except without hold open. Performance tests required: 4.2.5, 4.3.1 and 5. C01541 C01542 Type 2 Overhead Surface Mounted Slide Holder: For single acting entrance, vestibule and interior doors opening to 110 degrees. Stop with shock ab
37、sorber effective at all times. Hold open and release by push or pull on door, except when exposed control is set in inactive position. Holding pressure adjustable. Performance tests required: 4.2.1, 4.3.1 and 5. C02511 C02512 Type 2 Overhead Surface Mounted Slide Stop: Same as C02511 and C02512 exce
38、pt without hold open. Performance tests required: 4.2.5, 4.3.1 and 5. C02541 C02542 Type 3 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 p
39、ull on door. Control is capable of being set in inactive position. Performance tests required: 4.2.2, 4.3.1 and 5. C03511 C03512 Type 3 Overhead Surface Mounted Jointed Arm Stop: Same as C03511 and C03512 except without hold open function. Performance tests required: 4.2.5, 4.3.1 and 5. C03541 C0354
40、2 Type 8 Overhead Surface Mounted Rod Holder: For single acting entrance, vestibule and interior 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. P
41、erformance tests required: 4.2.1, 4.3.1 and 5. C08511 C08512 Type 8 Overhead Surface Mounted Rod Stop: Same as C08511 and C08512 except without hold open. Performance tests required: 4.2.5, 4.3.1 and 5. C08541 C08542 9 Type 9 Overhead Surface Mounted Cantilever Holder: For single acting entrance, ve
42、stibule 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 or thumb turn. Performance tests required: 4.2.2, 4.3.1 and 5. C09551 C09552 Type 9 Overhead Surface Mounted Cantilever Stop: Same as C09551 and C09552 ex
43、cept without hold open. Performance tests required : 4.2.5, 4.3.1 and 5. C09541 C09542 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. F
44、ree acting shoulder pivots. Shock absorber effective at all times. Performance tests required: 4.2.4, 4.3.1 and 5. 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: 4.2.5, 4.3.
45、1 and 5. C04541 C04542 C06543 Types 4 & 6 Overhead Concealed Non-Friction Slide Holder: Same as C04541, C04541 and C06543 except with automatic hold open. Hold open and release by push and pull on door. Performance tests required: 4.2.1, 4.3.1 and 5. C04511 C04512 C06513 Type 5 & 7 Overhead Surface
46、Mounted Friction Slide Holder: For single acting 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 required: 4.2.4, 4.3.1 and 5. C05531 C05532 C07533
47、 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: 4.2.5, 4.3.1 and 5. C05541 C05542 C07543 Type 5 & 7 Overhead Surface Mounted Non-Friction Slide Holder: Same as C05541, C05542 and C07543 exc
48、ept with automatic hold open. Hold open and release by push and pull on door. Performance tests required: 4.2.1, 4.3.1 and 5. C05511 C05512 C07513 10 5. EXPLANATION OF NUMBERING SYSTEM First letter denotes the BHMA organizational Section (C) First numeral indicates general type of material used: O -
49、 Optional material Second numeral identifies the type of product: Type 1 - Overhead Concealed Slide Type - single or double acting, exterior or interior doors. Type 2 - Overhead Surface Slide Type - single acting, exterior or interior doors. Type 3 - Overhead Surface Jointed Arm - single acting, exterior or interior doors. Type 4 - Overhead Concealed Slide Type - single or double acting, interior doors. Type 5 - Overhead Surface Slide Type -single acting, interior doors. Type 6 - Overhead Concealed Slide Type - single or double acting, l
