1、 i Telecommunication Industry Foundation Guide For Wire Rope Climb for Antenna Supporting Structures Guide Version 1.0.2 April 11, 2018 ii IMPORTANT NOTICE The purpose of this Guide (White Paper) is to provide an overview of a wire rope safety climb/system utilized on antenna supporting structures.
2、This informative document is only intended to apply to structures that are governed by the ANSI/TIA-222 standard, as adopted by the IBC (International Building Code) and other jurisdictional building codes. Up until the creation of this Telecommunications Industry Foundation (TIF) document, there wa
3、s inconsistent guidance regarding wire rope safety climb/systems. Manufacturers developed this guide over the course of several years based on their expertise, work experience, best practices and existing ANSI standards. This document attempts to clarify and define the applicable terminology, mainte
4、nance and condition assessment criteria so that manufacturers, purchasers, engineers and technicians may be better able to understand and communicate in a consistent and professional manner. This document also provides the structure owners and Engineer of Record (EOR) the loading and placement requi
5、rements necessary to analyze the wire rope safety climb connection to the structure as well as quantify the number of users who may utilize the wire rope safety climb/system. Information shall be provided by the manufacturer in a format defined by this document. This guide is also intended to convey
6、 the manufactures base requirements for inspection of these wire rope climbs to ensure when the wire rope climb is an appurtenance on the structure verses when it is to be utilized as an anchor for fall protection. This document is not a TIA Standard nor is it a Technical Systems Bulletin (TSB), it
7、is an industry led effort to inform and educate and this document will likely be updated from time to time. It is anticipated that this document will be a future contribution to the standardization process led by TR-14 and TIA. The following companies and organizations contributed to this document:
8、3M Trylon Tuf-Tug TIRAP iii NOTICE OF DISCLAIMER AND LIMITATIONS OF LIABILITY THE TELECOMMUNICATIONS INDUSTRY FOUNDATION AND THE TELECOMMUNICATIONS INDUSTRY ASSOCIATION DO NOT ENFORCE OR MONITOR COMPLIANCE WITH THE CONTENTS OF THE DOCUMENT. TIA AND THE TELECOMMUNICATIONS INDUSTRY FOUNDATION DO NOT C
9、ERTIFY, INSPECT, TEST OR OTHERWISE INVESTIGATE PRODUCTS, DESIGNS OR SERVICES OR ANY CLAIMS OF COMPLIANCE WITH THE CONTENTS OF THE DOCUMENT. ALL WARRANTIES, EXPRESS OR IMPLIED, ARE DISCLAIMED, INCLUDING WITHOUT LIMITATION, ANY AND ALL WARRANTIES CONCERNING THE ACCURACY OF THE CONTENTS, ITS FITNESS OR
10、 APPROPRIATENESS FOR A PARTICULAR PURPOSE OR USE, ITS MERCHANTABILITY AND ITS NONINFRINGEMENT OF ANY THIRD PARTYS INTELLECTUAL PROPERTY RIGHTS. TIA AND THE TELECOMMUNICATIONS INDUSTRY FOUNDATION EXPRESSLY DISCLAIMS ANY AND ALL RESPONSIBILITIES FOR THE ACCURACY OF THE CONTENTS AND MAKES NO REPRESENTA
11、TIONS OR WARRANTIES REGARDING THE CONTENTS COMPLIANCE WITH ANY APPLICABLE STATUTE, RULE OR REGULATION, OR THE SAFETY OR HEALTH EFFECTS OF THE CONTENTS OR ANY PRODUCT OR SERVICE REFERRED TO IN THE DOCUMENT OR PRODUCED OR RENDERED TO COMPLY WITH THE CONTENTS. TIA AND THE TELECOMMUNICATIONS INDUSTRY FO
12、UNDATION SHALL NOT BE LIABLE FOR ANY AND ALL DAMAGES, DIRECT OR INDIRECT, ARISING FROM OR RELATING TO ANY USE OF THE CONTENTS CONTAINED HEREIN, INCLUDING WITHOUT LIMITATION ANY AND ALL INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF BUSINESS, LOSS OF PROFITS, LI
13、TIGATION, OR THE LIKE), WHETHER BASED UPON BREACH OF CONTRACT, BREACH OF WARRANTY, TORT (INCLUDING NEGLIGENCE), PRODUCT LIABILITY OR OTHERWISE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. THE FOREGOING NEGATION OF DAMAGES IS A FUNDAMENTAL ELEMENT OF THE USE OF THE CONTENTS HEREOF, AND THESE
14、CONTENTS WOULD NOT BE PUBLISHED BY TIA OR THE TELECOMMUNICATIONS INDUSTRY FOUNDATION WITHOUT SUCH LIMITATIONS. DISCLAIMER: TIF does not endorse or promote any product, service, company or provider. iv About The TIF The Telecommunications Industry Foundation (TIF) is a charitable foundation dedicated
15、 to educating industry, policy makers, and the public on important issues related to the communications Industry. For more information visit www.tifonline.org . v Table of Contents IMPORTANT NOTICE . ii NOTICE OF DISCLAIMER AND LIMITATIONS OF LIABILITY iii About The TIF . iv 1. Scope and Application
16、 . 1 2. Definitions . 1 3.1 Wire Rope Safety Climb Static Loading. . 3 3.2 Wire Rope Safety Climb - Dynamic Loading 4 3.3 Wire Rope Safety Climb Load Summation Chart . 4 4. Wire Rope Cable Safety Climb as an Appurtenance Inspection Guidelines . 5 4.1 Top Assembly/Anchorage and Wire Rope Termination
17、. 5 2ir . 6 .3 RGuids . 6 4 Base/otnchrage sbly 7 .5 Idif (ID)TIpction . 7 6MmuRqir frITew istalion. 7 5. Wire Rope Safety Climb as PPE (Personal Protective Equipment) Inspection Guidelines . .8 5.1 PPE Inspections Outline 8 6. Post Fall Arrest PPE Inspection . 10 1 1. Scope and Application This inf
18、ormative manufacturer white paper is intended to inform the industry on the use of a wire rope safety climb/system in the telecommunications industry. This white paper is only intended to inform and apply to structures that are governed by the ANSI/TIA-222 standard, as adopted by the IBC (Internatio
19、nal Building Code) and other jurisdictional building codes. The objective is to provide detailed information applicable to the performance, compatibility testing, installation, inspection, maintenance, and repair of a wire rope safety climb(s) for antenna supporting structures. This document may hel
20、p provide the structure owner, or the Engineer of Record (EOR), the loading and placement requirements necessary to analyze the wire rope safety climb connection to the structure as well as quantify the number of users who may utilize the wire rope safety climb/system. Information may be provided by
21、 the manufacturer in a format defined by this document. 2. Definitions Authorized Climber An individual with the physical capabilities to climb, and who may or may not have previous climbing experience; has been trained in fall protection regulations, the equipment that applies to communication stru
22、ctures work and instruction for proper use and inspection of the equipment. Documented training must take place that shows the individual can identify hazards, inspecting equipment and has demonstrated the practical skills of an authorized climber. An authorized climber is to be supervised by a comp
23、etent climber. Appurtenance Items attached to the structure such as antennas, antenna mounts, transmission lines, conduits, lighting equipment, climbing devices, platforms, signs, anti-climbing devices, etc. Base Anchorage Attachment hardware provided by the safety climb manufacturer to transition f
24、rom the structure to the base assembly. Base Assembly A positive means of attachment of the wire rope to the bottom anchorage assembly by means of the wire rope tensioner. Carabiner - A connector, conforming to ANSI/ASSE Z359, generally comprised of a trapezoidal or oval shaped body with a closed ga
25、te or similar arrangement that may be opened to attach another object and when released auto latches and auto locks to retain the object. Climbing Facilities Obstruction - Obstructions are allowed per ANSI/TIA-222 and is any appurtenance and/or structural modification that physically blocks the clim
26、bing facility, as necessary, for the antenna supporting structures primary purpose. Connection Linkage A connector or a combination of elements, which forms the link between the wire rope safety sleeve and the attachment element of the full body harness. This connection consists of the carabiner and
27、 may include additional components as specified by the manufacturer. Connector A component (such as a carabiner) or element (such as a D-ring sewn into a full body harness) that is used to couple parts of a system together. 2 Competent Climber An individual physically able to climb; has actual tower
28、 climbing experience; is trained in the fall protection regulations including the equipment that applies to tower work; is capable of identifying existing and potential fall hazards; and has the employers authority to take prompt corrective action to eliminate those hazards. A competent climber is r
29、esponsible for the authorized climbers when working at heights. Competent Person One who is capable of identifying existing and predictable hazards in the surroundings or working conditions which are unsanitary, hazardous or dangerous to employees and who has authorization to take prompt corrective
30、measures to eliminate or control exposure to the hazards. Confined Safety Climb Occurs when the safety climb wire rope is physically trapped behind an appurtenance, feed lines and/or structural modification, without adverse impact to the wire rope, and the competent climber must use alternate means
31、of fall protection to navigate the obstacle. Engineer of Record (EOR) - A registered Professional Engineer who is responsible for all structural aspects of the design including the design of all the structures systems and components. The EOR may also develop a scope of work and set TIA maintenance a
32、nd condition requirements assessment intervals. Factored Load - The product of the nominal load and a load factor. Flexible Carrier The 3/8“ diameter wire rope spanning from base assembly to top assembly, which supports the wire rope safety sleeve. Full Body Harness A body support designed to contai
33、n the torso and distribute the fall arrest forces over at least the upper thighs, pelvis, chest and shoulders. The full body hardness must contain a sternal D-ring. Load Factor A factor that accounts for deviations of the actual load from the nominal load, for uncertainties in the analysis that tran
34、sforms the loads and load effects, and for the probability that more than one extreme load will occur simultaneously. May Denotes a permissive or possible statement. Nominal Loads the magnitude of the specified static and dynamic safety climb/system loads. Owner The public body, authority, corporati
35、on, association, firm or person for who work is to be performed on an antenna supporting structure via a contract document. Procurement The act of obtaining or buying goods and services. The process includes preparation and processing of a demand as well as the end receipt and approval of payment. S
36、hall A mandatory practice. Should A recommendation which is advised, but not required. Top Anchorage A secure connecting point or termination component of a safety climb, capable of supporting the static and dynamic forces applied during a fall arrest event. 3 Top Assembly A positive means of attach
37、ment, or termination, of the wire rope to top anchorage assembly. Top assembly may be integral with top anchorage. Wire Rope A 3/8” (0.375”) solid core galvanized or stainless steel cable as a flexible carrier. Wire Rope Safety Climb Obstruction - Any appurtenance and/or structural modification that
38、 diverts the safety climb (horizontally or vertically), and shall not harm the wire rope, or affect the function of the top assembly. Wire Rope Tensioner A spring, eye bolt, or other device that connects the wire rope to the base assembly to accommodate the manufacturers specified force. Wire Rope G
39、uides A device that acts to guide or connect a flexible carrier to the climbing facility or structure at intermediate points along the flexible carrier. Wire Rope Safety Climb Consists of the top anchorage, top assembly, wire rope (flexible carrier), wire rope guides, base assembly and base anchorag
40、e; considered an appurtenance on the structure. Wire Rope Safety Climb System Consists of a wire rope safety climb which is inspected, and put in service by a competent climber, and used in conjunction with the wire rope safety sleeve, connection linkage and full body harness. Wire Rope Safety Sleev
41、e A mechanical device that connects to and travels along the wire rope safety climb, designed to lock automatically in the event of a fall, connecting the wire rope to connection linkage, and allowing a competent/authorized climber to ascend and descend the wire rope safety climb. 3.1 Wire Rope Safe
42、ty Climb - Static Loading This section conveys the information to be provided by a manufacturer for the static loading of a system. Each manufacturer shall provide the following information to the procurement entity for their wire rope safety climb which shall be considered by the EOR in design: Sta
43、tic Load = (Top Mount Weight + 3/8” dia. Wire Rope Weight) x Load Factor Where: a. Upper/top mount bracket self-weight = 35 lbs average (varies by manufacturer and/or installation requirements). b. 3/8” diameter wire rope weight at 0.25 lbs/ft c. Load factor = 1.2 d. Wire rope tension is included wi
44、thin dynamic load, section 3.2. Example Calculation for 100 System: Static Load = 35 lbs. + (100ft x 0.25 lbs./ft) x 1.2 = 72 lbs. Static Load Calculation Notes: 4 1. All loads conveyed above are vertical. 2. Transverse loads at the wire rope guides have not been considered. 3. Wire rope accommodati
45、ng a taper beyond 15 will require specific design consideration from the safety manufacturer and are not covered within this document. 3.2 Wire Rope Safety Climb - Dynamic Loading Dynamic load on the wire rope safety climb system is in addition to the static loading defined above for a total load. T
46、he dynamic load is calculated with a load factor of 2.01 and 310 lbs2 user as defined by OSHA engineered fall protection safety systems and ANSI Z359, respectively. 1. One user average dynamic load = 1350 lbs X 2.0 load factor = 2700 lbs 2. Two users average dynamic load = 2700 lbs + (1 additional u
47、ser x 310 lbs X 2.0) = 3320 lbs 3. Three users average dynamic load = 2700 lbs + (2 additional users x 310 lbs x 2.0) = 3940 lbs 4. Four users average dynamic load = 2700 lbs + (3 additional users x 310 lbs x 2.0) = 4560 lbs 1Per OSHA 29 CFR 1926.502 2Per ANSI Z359.16 - 3.1.3.2 3.3 Wire Rope Safety
48、Climb Load Summation Chart The following chart is to convey the safe climb/system loads to the EOR for design and assessment of the structure. Anticipated loading chart for wire rope safety climb system based on number of users System Length Static Load (lbs)* Dynamic Load Single User (lbs)* Dynamic
49、 Load Two Users (lbs)* Dynamic Load Three Users (lbs)* Dynamic Load Four Users (lbs)* 100 ft 72 2,772 3,392 4,012 4,632 200 ft 102 2,802 3,422 4,042 4,662 300 ft 132 2,832 3,452 4,072 4,692 400 ft 162 2,862 3,482 4,102 4,722 500 ft 192 2,892 3,512 4,132 4,752 600 ft 222 2,922 3,542 4,162 4,782 700 ft 252 2,952 3,572 4,192 4,812 The dynamic loading assumes the initial tension on the safety climb system is exceeded by the dynamic load applied by one user during a fall arrest event. A three user system exceeds the mi
