SCAFFOLDS
Contents
1. Introduction
2. Problem areas
3. Selection
4. Basic types of scaffolds
5. Scaffold components
6. Erecting and dismantling scaffolds
7. Scaffold stability
8. Platforms
9. Proper use of scaffolds
1 INTRODUCTION
More than half of scaffold accidents in Ontario
construction are falls. Several fatalities are also related to
scaffolds each year. The number and severity of injuries
involved make scaffold accidents one of the more serious
safety problems in construction.
2 PROBLEM AREAS
The main problem areas are
• erecting and dismantling scaffolds
• climbing up and down scaffolds
• planks sliding off or breaking
• improper loading or overloading
• platforms not fully planked or “decked”
• platforms without guardrails
• failure to install all required components such as base
plates, connections, and braces
• moving rolling scaffolds in the vicinity of overhead
electrical wires
• moving rolling scaffolds with workers on the platform.
2.1 Erecting and Dismantling
From 15 to 20% of scaffold-related injuries involve
erecting and dismantling. The most common problem is
the failure to provide an adequate working platform for a
worker to use when installing the next lift of scaffold.
Working from one or two planks is not recommended.
The next important consideration involves components,
such as tie-ins, which you should install as the assembly
progresses. Failure to do so makes the scaffold less
stable and, while it may not topple, it may sway or move
enough to knock someone off the platform. This happens
more often when platforms are only one or two planks
wide and guardrails are missing, as is frequently the case
during erection and dismantling.
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