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ASME A120.1 2008

ASME A120.1 2008

$98.04

ASME A120.1 Safety Requirements for Powered Platforms and Traveling Ladders and Gantries for Building Maintenance

Published By Publication Date Number of Pages
ASME 2008 34
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PDF Pages PDF Title
4 CONTENTS
5 FOREWORD
6 ASME A120 COMMITTEE Safety Requirements for Powered Platforms for Building Maintenance
7 CORRESPONDENCE WITH THE A120 COMMITTEE
8 ASME A120.1-2008 SUMMARY OF CHANGES
10 SAFETY REQUIREMENTS FOR POWERED PLATFORMS AND TRAVELING LADDERS AND GANTRIES FOR BUILDING MAINTENANCE
1 GENERAL RECOMMENDATIONS AND DEFINITIONS
1.1 Scope
1.2 Purpose
1.3 Application of This Standard
1.3.1 Applications.
1.3.2 Deviations.
1.3.3 Alterations
1.4 Applicable Units
1.5 References
11 1.5.1
1.6 Terms and Definitions
14 2 BUILDING DESIGN REQUIREMENTS
2.1 General
2.1.1 Installation Owner.
2.2 Design Requirements
2.3 Specific Building Design Requirements
2.3.1 General Requirements.
2.3.2 Safety Requirements.
2.3.3 Tie-in-Guides
2.3.3.1 Exceptions
2.3.3.2 Minimum Tie-in-Guide Dimensions.
15 2.3.3.3 Intermittent Stabilization Systems.
2.3.3.4 Standing Static Line.
2.3.4 Perimeter Guarding of Elevated Areas.
2.3.4.1 Rigging, Accessing, and Servicing Platforms.
2.3.5 Equipment Structural Support.
2.3.6 Electrical Requirements.
16 2.3.7 Miscellaneous Requirements
3 EQUIPMENT DESIGN AND CONSTRUCTION REQUIREMENTS
3.1 General
3.1.1 General Design Requirements.
3.1.2 Climatic Conditions.
17 3.1.3 Material Requirements
3.1.4 Construction Requirements.
3.1.5 Installation Documentation.
3.1.6 Identification Components.
3.2 Specific Design Requirements
3.2.1 Design Loads.
3.2.1.1 Dynamic Load.
3.2.1.2 Wind Loads Exterior Installations.
3.2.1.3 Additive Loads.
3.2.2 Live Load and Allowable Stresses.
18 3.2.3 Allowable Deflections.
3.2.4 Wind Loads.
3.2.5 Projected Exposed Area Exterior Installations.
3.2.6 Acceptable Means of Suspension.
3.2.7 Height Restriction.
3.2.8 Movement and Positioning.
3.3 Carriage
3.3.1 Movement and Positioning.
3.3.2 Restriction of Movement.
3.3.3 Operating Controls for Powered Roof Carriage
19 3.3.4 Stability.
3.3.5 Required Features
3.3.6 Access and Egress.
3.3.7 Maintenance and Storage.
3.3.8 Workstation Identification.
3.3.9 Trolley System.
3.4 Outriggers Beam Type
20 3.5 Davits and Rotatable Outriggers
3.5.1 Types of Installations
3.5.2 Design Consideration.
3.6 Hoisting Machines
3.6.1 Prime Mover.
21 3.6.2 Speed Reducers.
3.6.3 Gearing.
3.6.4 Lubrication Provisions.
3.6.5 Guards.
3.6.6 Shafts, Fillets, Keys, and Splines.
3.6.7 Drums and Sheaves.
3.6.8 Brakes.
22 3.7 Suspended Equipment
3.7.1 General Requirements.
3.7.2 Load-Rating Identification.
3.7.3 Suspended Unit Stabilization Requirements.
3.7.4 Building Contact Members
3.7.4.1 General.
3.7.4.2 Entrance of Guide Rollers or Shoes Into or Onto Building Guides.
3.7.5 Manned Suspended Equipment Working Platform
3.7.5.1 Enclosures.
23 3.7.5.2 Platform Construction.
3.7.5.3 Cable Storage.
3.7.5.4 Cable Stabilization.
3.7.5.5 Controls for Vertical Movement
3.7.5.6 Communications Requirements.
3.7.5.7 Provisions for Tools and Items.
3.7.5.8 Fire Protection.
3.7.5.9 Access and Egress.
3.7.5.10 Fall Protection.
3.7.5.11 Single Point Suspended Working Platform.
24 3.7.5.12 Ground-Rigged Suspended Scaffold Platforms.
3.7.5.13 Powered BoatswainÅ’s Chairs.
3.7.6 Unmanned Suspended Equipment Automatic Equipment — Unmanned Platform
3.7.6.1 Enclosures.
3.7.6.2 Construction.
3.7.6.3 Cable Stabilization.
3.7.6.4 Controls for Vertical Movement
3.7.6.5 Maximum Rated Speed.
3.7.6.6 Communication Requirements.
3.7.6.7 Fire Protection.
3.7.6.8 Access and Egress
3.7.6.9 Upper Travel Limit Switches.
3.8 Remote Traversing Units
25 3.9 Supported Equipment
3.9.1 General Requirements.
3.9.2 Unit Load Rating Identification.
3.9.3 Building Contact Members
3.9.3.1 General.
3.9.3.2 Entrance of Guide Shoes or Wheels Into Building Guides.
3.9.3.3 Manned Equipment
3.9.3.4 Unmanned Equipment.
3.10 Suspension Wire Ropes and Rope Connections
3.10.1 Wire Rope Classifications.
3.10.1.1 Grade of Wire Rope
3.10.1.2 Rope Cores.
26 3.10.1.3 Rope Lubrication.
3.10.1.4 Design Factor.
3.10.1.5 Minimum Diameter of Suspension Wire Ropes.
3.10.2 Limitations
3.10.2.1 Reverse Bends.
3.10.2.2 Angular Displacement Fleet Angle.
3.10.3 Rope Tag Data
3.10.3.1 Initial Rope Tag.
3.10.3.2 Type of Tag.
3.10.3.3 Rope Renewal Tag.
3.10.4 Securing of Suspension Wire Ropes
3.10.4.1 Winding Drum Hoists
3.10.4.2 Traction Drum or Sheave Hoists
3.10.5 Types of Suspension Wire Rope Fastenings.
3.10.6 Minimum Number of Wraps or Length of Suspension Wire Ropes
27 3.10.7 Lengthening or Repairing of Suspension Wire Ropes.
3.10.8 Adjustable Shackle Rods When Used.
3.11 Control, Power Circuits, and Components
3.11.1 Electrical Grounding.
3.11.2 Electrical Wiring and Components
3.11.2.1 General Requirements.
3.11.2.2 Circuit Protection.
3.11.2.3 Guarding of Electrical Parts.
3.11.2.4 Circuit Potential Limitations
3.11.2.5 Equipment Electrical Service System
3.11.2.6 Traveling Cable
28 3.11.2.7 Control Panels or Enclosures
3.11.2.8 Electrical Protective Devices
3.11.2.9 Radio-Controlled Installations.
4 TRAVELING LADDERS AND GANTRIES
4.1 General
4.2 Use and Application
4.2.1 General Requirement.
4.2.2 Marking and Labeling.
4.2.3 Instruction Manual.
4.3 Equipment Design
4.3.1 Fall Protection.
4.3.2 Guardrails, Handrails, and Toe Boards.
4.3.3 Stability.
4.3.4 Safety Factor.
4.3.5 Corrosion.
4.3.6 Galvanic Reactions.
4.3.7 Support.
4.3.8 Arrangement of Steps.
4.3.9 Tread Clearance.
29 4.3.10 Clear Width.
4.3.11 Treads.
4.3.12 Top Surface.
4.3.13 Locking Devices.
4.3.14 Thermal Expansion.
4.3.15 Handrails.
4.3.16 Operating Speeds.
4.3.17 Wheels Running on Rails or Tracks.
4.4 Safety Requirements
4.4.1 End of Travel Limit.
4.4.2 Emergency Access and Escape.
4.4.3 Public Areas.
4.4.4 Access Gates.
4.4.5 Braking System.
4.4.6 Powered TLG.
4.5 Fixed Ladders
4.6 Powered TLG
4.7 Hydraulic Equipment
4.7.1 General Requirement.
30 4.7.2 Components.
5 INSPECTIONS, TESTS, OPERATION, AND MAINTENANCE
5.1 Inspections and Tests
5.1.1 Performance Tests.
5.1.2 Periodic Inspections
5.1.3 Maintenance Inspections and Tests.
5.1.4 Special Inspection of Governors and Secondary Brakes
5.1.5 Wire Rope Inspection Procedure.
5.1.6 Hoist Test.
5.2 Operation
5.2.1 Qualified Operators.
31 5.2.2 Adverse Weather.
5.3 Maintenance
5.3.1 Required Maintenance
5.3.2 Cleaning
5.3.3 Lubrication.
5.3.4 Periodic Resocketing of Babbitted Fastenings.
5.3.5 Making Safety Devices Inoperative.
5.3.6 Track System.
5.3.7 Building Face Guiding Members.
5.3.8 Combination Cable Maintenance for Unmanned Equipment.
32 MANDATORY APPENDIX I OPERATING MANUAL LAYOUT
I-1 TABLE OF CONTENTS
I-2 GENERAL DATA SUMMARY
I-3 DEFINITIONS
I-4 WARNINGS FOR OWNER AND USER
I-5 INTRODUCTION AND DESCRIPTION
I-6 CHECKS BEFORE RIGGING AND USE
I-7 RIGGING, SETUP, AND DERIGGING
I-8 CHECKS BEFORE OPERATION
I-9 OPERATION
I-10 TROUBLESHOOTING
33 I-11 EMERGENCY RECOVERY PROCEDURE/RESCUE
I-12 FINAL SAFETY DOs AND DONÅ’Ts OR CHECKLIST
I-13 MAINTENANCE
I-14 WARRANTY
I-15 ELECTRICAL DIAGRAMS
I-16 ILLUSTRATION OF ALL LABELS AFFIXED TO EQUIPMENT
I-17 LIST OF REFERENCE MATERIAL/CODES

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