Under OSHA 29 CFR 1926 Subpart L, each scaffold and scaffold component must be able to support, without failure, its own weight plus at least how many times the maximum intended load?
Scaffold Fundamentals
Question · Easy
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Short
What is the minimum height above a lower level at which OSHA requires fall protection for employees on a scaffold?
Fall Protection
In a standard supported frame scaffold, what is the name of the vertical, load-bearing tube or leg that carries the structure's weight to the ground?
Component Identification
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On a tube-and-coupler scaffold, which coupler is used to join a ledger to a standard at a true 90-degree (load-bearing) connection?
Basic Erection
Question · Medium
A supported scaffold must be restrained from tipping by guying, tying, or bracing whenever its height exceeds what multiple of its minimum base width?
OSHA fall heights, to scale
For a supported scaffold first placed in service after January 1, 2000, what is the required height range for the toprail (guardrail) above the platform surface?
A scaffold platform rated for light-duty work is designed to carry a maximum intended load of how many pounds per square foot?
Load Duty Ratings
Which knot is most commonly used to form a secure, non-slipping eye (loop) at the end of a hand line for hoisting scaffold material?
Knots Rigging
What is the maximum allowed gap between adjacent scaffold planks (platform units), except around uprights where larger gaps are unavoidable?
A supported scaffold's poles, legs, posts, and frames must bear on base plates and what other component placed on the firm foundation?
Foundations Leveling
Who must inspect a scaffold for visible defects before each work shift and after any occurrence that could affect its structural integrity?
What is the minimum width required for most scaffold work platforms under OSHA Subpart L?
The front edge of a scaffold platform must generally be no more than how far from the face of the work (the structure being worked on)?
Question · Hard
What is the primary function of a cross brace on a fabricated frame scaffold?
On a supported scaffold using a 200-pound-rated toprail, the midrail must be installed approximately where?
What is the minimum required height of a standard toeboard used for falling-object protection on a scaffold?
When materials are being hoisted by a hand line to an erector on a scaffold, the worker receiving the load should primarily protect against which hazard?
Safe Handling
Which horizontal scaffold member runs at right angles to the ledgers (perpendicular to the wall) and directly supports the scaffold boards?
Why must the foundation under a supported scaffold be level, sound, rigid, and capable of carrying the loaded scaffold?
On sloped or uneven ground, what component is used together with a base plate to bring scaffold legs to a level, plumb starting condition?
A non-adjustable rope used to support a suspension scaffold must be capable of supporting at least how many times the maximum intended load?
What is the maximum allowed clearance between a scaffold platform and the uprights at points where a gap is unavoidable (for example, to reach around a leg)?
A clove hitch used to secure a hand line or guy rope to a scaffold tube should be finished with what to keep it from working loose?
Before climbing, an erector confirms the scaffold is plumb. What does 'plumb' mean for a scaffold standard?
What is the maximum allowed distance the bottom rung of a hook-on or attachable scaffold ladder may sit above the level it provides access from?
A scaffold platform built from solid sawn plank must extend over its end support by at least how much, unless the plank is cleated or otherwise restrained from movement?
What is the minimum required overlap when scaffold planks are lapped end-to-end over a support, unless the planks are nailed or restrained from movement?
Personal fall arrest systems and guardrails are designed to limit a worker's free fall to a maximum of how many feet?
When a scaffold is being erected or dismantled, who decides whether providing fall protection for the erectors is feasible and which method to use?
What does the term 'maximum intended load' mean when rating a scaffold?
Why must scaffold components from different manufacturers generally NOT be intermixed on the same scaffold?
What is the minimum safe clearance an erector must keep between the scaffold and an uninsulated, energized power line of 50 kV or less?
Which of the following is the correct general rule for accessing a scaffold platform?
Before erecting a frame scaffold, an erector should select planks free of which defect?
On a mobile (rolling) scaffold, what must be done with the caster wheels before workers climb up or perform work?
An erector is tying off to anchor a personal fall arrest system. What is the minimum anchorage strength OSHA generally requires per attached worker?
What is the purpose of a guy line (or tie) connecting a tall supported scaffold to the structure?
Which of these is a basic safe-handling practice when carrying scaffold frames and tubes by hand on the ground?
A frame scaffold leg is being set on soft, sloping soil. Which approach is correct?
What does a putlog (single) coupler do that a right-angle coupler does not?
What is the maximum allowed spacing between rungs on a scaffold access ladder or integral frame rungs?
When is a guardrail system alone acceptable as the only fall protection for an erector working on a completed supported scaffold platform?
What is the main reason erectors keep the area directly below an in-progress scaffold barricaded or cleared?
A toprail on a standard supported scaffold must be able to withstand, without failure, a downward or outward force of at least how much?
What does it mean to 'rack' a frame scaffold, and why is it a concern?
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