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Scaffolding
SCAFFOLDS (TUBULAR WELDED FRAME)
SWINGING SCAFFOLDS (TWO-POINT SUSPENSION)
In its simplest form, a scaffold is any temporary elevated or suspended
work surface used to support workers and/or materials. There are many
types of scaffolds, both supported and suspended. Contractors who erect
or use scaffolding should be familiar with and follow the requirements
of 29
CFR 1926 Subpart L - Scaffolds. Included here
are some general requirements for all scaffolds, as well as specific requirements
for a supported scaffold (tubular welded frame) and suspended scaffold
(two-point suspension).
General
- The footing of scaffolding should be sound and rigid, capable of supporting
the weight. Scaffolding should not be placed on unstable objects, such
as bricks or blocks.
- Scaffolds should be erected, dismantled, or moved only by properly
trained workers.
- Scaffolds and components should be able to support at least four
times the intended load.
- Standard guardrails (e.g., handrail and midrail) and toeboards should
be provided for all open sides of the scaffolding that are ten (10)
feet or more above the surrounding surfaces.
- To protect against falling objects, screens should be installed between
the toeboard and midrail if anyone is required to pass under the scaffolding.
- Any damaged or weakened component of a scaffold should be repaired
or replaced immediately.
- All planking or platforms should be overlapped a minimum of twelve
(12) inches and secured from movement. Scaffold planks should extend
over their end support at least six (6) inches but no more than twelve
(12) inches.
- An access ladder or other safe access should be provided.
SCAFFOLDS (TUBULAR WELDED FRAME)
- Cross-braces of the proper length should be used to ensure that the
scaffold will remain plumb and rigid.
- To prevent movement, the scaffold should be secured to the building
or structure at intervals not to exceed 30 feet horizontally and 26
feet vertically.
- Rolling scaffold should not be used on sloped surfaces.
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SWINGING SCAFFOLDS (TWO-POINT SUSPENSION)
- The platform of a two-point suspension scaffold should not be more
than 36 inches wide unless designed by a qualified person, and should
be surrounded with a standard guardrail and toeboard.
- Ropes capable of supporting at least six (6) times the rated load
should be used to suspend two-point suspension scaffolds. All other
components should be capable of supporting at least four (4) times the
rated load.
- Pursuant to applicable OSHA regulations, no more than two workers
may work at one time on suspension scaffold designed for a working load
of 500 pounds; no more than three workers may work at one time on suspension
scaffolds with a working load of 750 pounds. Each worker should be protected
by a personal fall arresting system attached to an independent lifeline.
The lifeline should be attached securely to substantial members of the
structure (not the scaffold) or to securely rigged lines that will safely
suspend the employee in case of a fall.
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