ANSI American Society of Safety Engineers A10.5-2013 Safety Requirements for Material Hoists.pdf

1、Printed in U.S.A.ASSEAMERICAN SOCIETY OFSAFETY ENGINEERSAMERICAN NATIONAL STANDARDANSI/ASSE A10.5 2013ANSI/ASSE A10.5 2013Safety Requirementsfor Material HoistsAmerican National Standardfor Construction and Demolition OperationsANSI/ASSE A10.5 2013The information and materials contained in this publ

2、ication have been developed from sources believed to be reliable. However, the American Society of Safety Engineers (ASSE) as secretariat of the ANSI accredited A10 Committee or individual committee members accept no legal responsibility for the correctness or completeness of this material or its ap

3、plication to specific factual situations. By publication of this standard, ASSE or the A10 Committee does not ensure that adherence to these recommendations will protect the safety or health of any persons, or preserve property. ANSI ANSI/ASSE A10.5 2013 American National Standard Construction and D

4、emolition Operations Safety Requirements for Material Hoists Secretariat American Society of Safety Engineers 1800 East Oakton Street Des Plaines, Illinois 60018-2187 Approved February 28, 2013 American National Standards Institute, Inc. Approval of an American National Standard requires verificatio

5、n by ANSI that the requirements for due process, consensus, and other criteria for approval have been met by the standards developer. Consensus is established when, in the judgment of the ANSI Board of Standards Review, directly and materially affected interests have reached substantial agreement. S

6、ubstantial agreement means much more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that a concerted effort be made toward their resolution. The use of American National Standards is completely voluntary; their existence doe

7、s not in any respect preclude anyone, whether he/she has approved the standards or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standards. The American National Standards Institute does not develop standards and will in no circumst

8、ance give an interpretation of any American National Standard. Moreover, no person shall have the right or authority to issue an interpretation of an American National Standard in the name of the American National Standards Institute. Requests for interpretation shall be addressed to the secretariat

9、 or sponsor whose name appears on the title page of this standard. Caution Notice: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute require that action be taken periodically to reaffirm, revise, or withdraw this stan

10、dard. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute. Published April, 2013 by American Society of Safety Engineers 1800 East Oakton Street Des Plaines, Illinois 60018-2187 (847) 699-2929 www.

11、asse.org Copyright 2013 by American Society of Safety Engineers All Rights Reserved. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. Printed in the United States of America American Nati

12、onal Standard Foreword (This Foreword is not a part of American National Standard A10.5 2013.) This standard is one of a series of safety standards that have been formulated by the Accredited Standards Committee on Safety in Construction and Demolition Operations, A10. It is expected that the standa

13、rds in the A10 series will find a major application in industry, serving as a guide to contractors, labor and equipment manufacturers. For the convenience of users, a list of existing and proposed standards in the A10 series for Safety Requirements in Construction and Demolition Operations follows.

14、A10.1 Pre-Project the space traveled by the platform or bucket. 3.12 Hoistway Door. The door that prevents the passage of personnel or material into the hoistway. 3.13 Hoistway Enclosure. The struc-ture that isolates the hoistways from all other parts of the building and on which the hoistway doors

15、or gates and door or gate assemblies are installed. 3.14 Hoistway Gate. The gate that prevents the passage of personnel or material into the hoistway. 3.15 Inside Hoists. Hoistways con-tained entirely within the building being served and that sometimes use the building structure itself for the suppo

16、rt of the top beams, guide rails and appurtenant parts necessary for the proper functioning of the platform. AMERICAN NATIONAL STANDARD A10.5 2013 14 3.16 Live/Luffing Boom. A boom that does not operate on a fixed radius and is capable of vertical movement. 3.17 Mast. A vertical structure that suppo

17、rts and guides the car (and the counterweight and cathead, when used) outside of which the car travels. 3.18 Material Hoist. A mechanism for use in connection with the hoisting of construction or demolition materials only. Hoisting of personnel is prohibited. It is equipped with a platform, car, cag

18、e or bucket that moves vertically on guide members. 3.19 Platform. The load-carrying unit, including the frame, that directly supports the load. 3.20 Qualified Person. One who by possession of a recognized degree, certificate or professional standing or who by extensive knowledge, training and exper

19、ience, has successfully demonstrated their ability to solve or resolve problems relating to the subject matter, the work or the project. 3.21 Rated Load. The maximum live load at which the hoist structure is designed to operate. 3.22 Rope. Refers to wire rope only. 3.23 Shall. Means a mandatory re-q

20、uirement. 3.24 Should. Means a recommend-ation. 3.25 Tower. A vertical structure that supports and guides the car (and the counterweight and overhead, when used) and within which or on which the car travels. 4. REQUIREMENTS FOR HOIST TOWERS 4.1 Design. All material hoist system components including

21、towers, masts, guys or braces, counterweights, drive machinery supports, hoists, sheave supports, plat-forms, supporting structures and access-ories shall be designed by a registered Professional Engineer. 4.2 Construction. Structural members of material hoist towers shall be constructed of steel or

22、 other structural materials as determined by a registered Professional Engineer. Structural material hoist com-ponents including towers, masts and supports shall be constructed, braced and supported to resist lateral movement and displacement. 4.3 Initial Inspection. Before the hoist is placed in se

23、rvice, all parts of the tower or mast, cage, bucket, boom, platform, hoisting machine, guys and other equipment shall be thoroughly inspected and documented by a trained and qualified person(s). The car-arresting-device test shall be performed before the hoist is placed in service. This test shall b

24、e made as specified in Sections 10.9.5 through 10.9.6. The hoisting machine brakes shall be tested as specified in Section 15.2. 4.4 Daily Inspection. A pre-opera-tional inspection shall be made by a competent person prior to placing the hoist into service each day. This test should verify the smoot

25、h operation and control over the entire travel of the hoist car or bucket. This inspection should include the hoist machine, brakes, gears, wire ropes, signal system and operators controls. If something in this inspection is found to be deficient, the hoist shall not be placed back into service unti

26、l the needed replacements or adjustments are all made. A competent person or a mechanic trained by the manufacturer shall perform repairs or replacements of the material hoist equipment. The results of the daily inspection shall be entered into the maintenance records outlined in Section 23.1 AMERIC

27、AN NATIONAL STANDARD A10.5 2013 15 4.5 Monthly Inspection. All sheaves, racks and pinions, guy ties, bolt connections, miscellaneous clamps, braces and similar parts shall be inspected. The inspection shall be conducted by a qualified person. Records of all monthly inspections and tests shall be kep

28、t on site, and must be made available upon request for review by any enforcing authority. Any parts that are found to be defective shall be repaired or replaced. 4.6 Quarterly Inspection. Every 90 days, all parts of the hoist shall be inspected by a qualified person. This inspection must include the

29、 tower or mast, all bolt connec-tions, miscellaneous clamps, hoist platform, cage, bucket, boom, hoisting machine, machine controls, sheaves, racks and pinions, guys, ties, braces and other equipment. Any parts that are found to be defective and may compromise the systems integrity shall be repaired

30、 or replaced. The car-arresting-device shall be tested as specified in 10.9.5 through 10.9.6. Records of all quarterly inspections and tests shall be kept on site, and must be made available upon request for review by any enforcing authority. 4.7 Inspection After Height Exten-sion. After the hoist m

31、ast or tower has been added, and the service height extended, a full quarterly inspection shall be performed as listed in 4.4 4.8 Post Incident Inspection. A formal, quarterly inspection shall be conducted after any incident that impacts potential structural components; such as earthquakes, high win

32、d storms or contact of component systems by heavy equipment, swinging loads or other potentially damaging materials/events. 5. DESIGN AND CONSTRUCTION OF FOUNDATIONS Hoist tower foundations shall be con-structed to safely support the towers intended rated loads and shall not exceed the safe bearing

33、capacity of the ground or floor upon which they rest. Hoist tower foundations specific to the project shall be designed by a registered Professional Engineer. 6. ERECTION 6.1 Vertical Alignment. Hoist towers shall be plumb. Adjusting hoist towers to be out of plumb for any reason, such as to adjust

34、clearances to landings, shall not permitted. 6.2 Guide Rails. The guide rails of hoists shall be of structural metal or the equivalent, securely fastened and shall deflect no more than 1/360 of rail height. The rail gauge shall not vary by more than 1/4 inch (6.35mm), unless designed other-wise by a

35、 registered Professional Engineer. 6.3 Grounding and Bonding. Hoist towers shall be electrically grounded and bonded in accordance with the most recent adopted edition of the NFPA 70, National Electrical Code, Article 250 and/or other applicable sections. 6.3.1 Exposure to Live Parts. Live parts of

36、electrical equipment shall be guarded against accidental contact through the use of approved enclosures as noted in the most recent adopted edition of the NFPA 70, National Electrical Code, Article 110.27 and/or other applicable sections. 6.3.2 Wiring Design and Installation. All electrical installa

37、tions installed in accordance with the most current version of the National Electrical Code shall be deemed compliant with this sections requirement. 6.4 Hoist-Tower Enclosures. Hoist towers may be used with or without an enclosure on all sides. Whatever alternate is AMERICAN NATIONAL STANDARD A10.5

38、 2013 16 chosen, the applicable conditions in 6.4.1 through 6.4.3 shall be met. 6.4.1 When hoist towers are enclosed the car/platform shall also be enclosed. The enclosure on all sides of the tower, for its entire height, shall be either of a solid rigid surface material, or by a wire-screen enclosu

39、re of not less than No. 19 U.S. gage wire or equivalent material, with openings not exceeding 1/2 inch (12.7mm). However, whichever method is chosen, the enclosure shall be securely fastened to the tower structure, with hoistway doors or gates formed onto each landing. 6.4.2 When a hoist tower is no

40、t enclosed, the hoist platform or car shall be totally enclosed as set forth in 10.7. 6.4.3 For hoists located outside of structures, the enclosures, except those at the lowest landing, may be omitted on the sides where there is no floor or scaffold adjacent to the hoistway. Enclosures on the buildi

41、ng side of the hoistway shall extend the full height between floors, or a minimum of 10 feet (304.8cm), whichever is less, at each floor landing. 6.5 Hoistway Doors or Gates. 6.5.1 Hoistway doors or gates shall be not less than 6 feet 6 inches (1.98m) in height. 6.5.2 Any opening shall not admit a b

42、all 3/4 inch (1.9cm) in diameter. 6.5.3 Guides, guide shoes and locking devices shall be designed, constructed and installed so a fully closed door or gate and its components will not deflect beyond the centerline of the car-to-landing sill clearance when subjected to a 75 pound (34kg) force applied

43、 perpendicular to the opening and distributed over an area of one square foot (929cm2) on any part of the door or gate. Furthermore, the door, gate or its support members and components shall not deflect beyond the centerline of the car-to-landing-sill clearance nor be permanently deformed or distor

44、ted. 6.5.4 The door or gate shall not be displaced from its supports, guides, tracks, hinges, latches and locking devices or otherwise be made inoperative when it is subjected to a force of 250 pounds (113kg) applied perpendicular to the opening and distributed over its full surface. 6.5.5 Landing d

45、oors or gates in closed position shall not be located more than 8 inches (20.3cm) from the car threshold. 6.5.6 A vision panel shall be provided where solid doors are used. 6.5.7 The vision panel shall be covered with a flame-retardant material that will not admit a ball of 3/4 inch diameter (1.9cm)

46、 and that will withstand a force of 75 pounds (34kg) applied perpendicular to any part of the panel and distributed over an area of one square foot (929cm2) with no greater deflection than any other part of the door as allowed above. 6.5.8 The vision panel shall be installed so it will not be in con

47、tact with any of the doorjambs. The vision panel door should be repeated in each of the building floor doors providing a minimum 6 inch (15.2cm) clearance between the material hoist door and the individual floor doors. 6.5.9 All hoistway entrance bars and gates shall be marked with diagonal black an

48、d yellow stripes. Landing bars should follow design criteria for scaffold guardrails, being capable of withstanding a 200 pound (90.7kg) point source vertically or horizon-tally or a distributed load of 50 pounds (22.7kg) per linear foot. 6.5.10 Guardrails shall be designed to resist a 200 pound (90

49、.7kg) point load. Vertical supports shall be located at least 2 feet (61cm) from the hoistway line. Horizontal members shall be located not AMERICAN NATIONAL STANDARD A10.5 2013 17 less than 36 inches (91.4cm) or more than 42 inches (106.7cm) above the floor. 6.6 Tower Height. Hoist towers shall be erected to a height necessary for immediate needs. 6.6.1 The tower shall not be extended in height beyond the manufacturers recom-mendations. 6.6.2 The tower height shall not exceed the height required to position the floor of the cage a maximum of 6 feet 6 inches (1.98m)