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Loading...Saudi Aramco – Scaffold Safety Handbook
TABLE OF CONTENTS
Page
9.0 ELEVATED WORK AREAS, LADDERS, AND SCAFFOLDS
9.1 Purpose . 1
9.2 Scope 1
9.3 Standards and References . 2
9.4 Definitions 5
9.5 Elevated Work Areas – General Requirements . 14
9.5.1 Fall Protection . 14
9.5.2 Guardrail Systems 14
9.5.3 Personal Fall Arrest Systems 15
9.5.4 Falling Object Protection . 16
9.5.5 Entry and Exit 17
9.5.6 Temporary Stairways . 17
9.5.7 Temporary Ramps . 19
9.5.8 Slipping and Tripping 19
9.5.9 Roof Work 19
9.5.10 Lighting . 19
9.5.11 High Winds . 20
9.5.12 Work Over Water 20
9.5.13 Hot Surfaces . 20
9.5.14 Unstable Buildings and Structures . 20
9.5.15 Forklift Supported Temporary Work Platforms . 20ii
9.6 Portable Ladders and Step Ladders 21
9.6.1 Condition 21
9.6.2 Position 21
9.6.3 Clearances . 22
9.6.4 Usage . 23
9.6.5 Step Ladders 24
9.6.6 Extension Ladders 24
9.6.7 Job-made Ladders . 24
9.7 Scaffold Components . 25
9.7.1 General . 25
9.7.2 Scaffold Tubing and Fittings Specifications . 26
9.7.3 Platform Units . 28
9.8 Requirements Common to All Scaffolds 29
9.8.1 Capacity . 29
9.8.2 Foundations 30
9.8.3 Stability . 30
9.8.4 Scaffold Platform Construction and Use 33
9.8.5 Clearances . 35
9.8.6 Raising and Lowering Materials Using Gin Wheels . 36
9.9 Requirements Common to System and Tube and Coupler Scaffolds . 37
9.9.1 Horizontal Members 37
9.9.2 Bracing . 37
9.9.3 Tools . 389.10 System Scaffolds . 38
9.11 Tube and Coupler Scaffolds . 39
9.11.1 Posts (Standards) . 39
9.11.2 Runners (Ledgers) and Bearers (Transoms) 39
9.11.3 Vertical Bracing 40
9.11.4 Light-duty Tube and Coupler Scaffolds 41
9.11.5 Medium-duty Tube and Coupler Scaffolds . 43
9.12 Mobile and Tower Scaffolds 44
9.12.1 Mobile and Tower Scaffold Construction 44
9.12.2 Mobile Scaffold Operation 45
9.13 Fabricated Tubular Frame Scaffolds . 46
9.14 Bracket Scaffolds . 46
9.14.1 Brackets and Straps . 46
9.14.2 Guardrails and Platforms for Bracket Scaffolds . 47
9.15 Underhung Scaffolds 48
9.15.1 Criteria for Underhung Scaffolds . 48
9.15.2 Underhung Scaffolds Suspended by Tubes and Couplers . 49
9.15.3 Underhung Scaffolds Suspended by Wire Rope 49
9.15.4 Use of Wire Rope Clips 50
9.15.5 Welding From Underhung Scaffolds Suspended by Wire Ropes . 51
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