What nominal outside diameter is specified for tubes used in tube-and-coupler scaffolds under OSHA 1926.452(b)?
Standards And Regulations
Question · Easy
OSHA fall heights, to scale
Short
Which type of coupler is designed to bear the vertical load transferred between a runner and a post in a tube-and-coupler scaffold?
Coupler Types And Functions
What is the typical torque specification applied to right-angle couplers during assembly of a tube-and-coupler scaffold?
Question · Medium
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In tube-and-coupler scaffold terminology, what is the term for the horizontal tube that runs parallel to the building face along the length of the scaffold?
Scaffold Components
OSHA 1926.452(b) requires that tube-and-coupler scaffold posts not be out of plumb by more than how much relative to the base of the scaffold?
A swivel coupler is used in tube-and-coupler scaffolding primarily to:
What is the maximum allowable height-to-base width (H:B) ratio for a freestanding tube-and-coupler scaffold before positive tie-in or outrigger bracing is required?
Stability And Tie In
Under OSHA 1926.451 general scaffold requirements, what is the maximum height of a scaffold platform above the ground before fall protection is required?
Fall Protection
What is the minimum required width of a tube-and-coupler scaffold platform under OSHA 1926.451?
Platform Requirements
What is the maximum allowable gap between adjacent planks on a tube-and-coupler scaffold platform per OSHA 1926.451?
When planking a tube-and-coupler scaffold platform, what is the minimum overlap required at each bearer when planks are not cleated or otherwise secured?
What is the minimum load rating (psf) for a tube-and-coupler scaffold classified for heavy-duty use under OSHA 1926.451?
Load Ratings
What is the maximum vertical spacing interval for scaffold tie-ins to a structure under OSHA 1926.452(b)?
What is the maximum horizontal spacing interval between tie-in connections for a tube-and-coupler scaffold per OSHA 1926.452(b)?
Under OSHA 1926.451, what is the minimum safe distance a tube-and-coupler scaffold must maintain from an energized power line of less than 300 volts?
Electrical Hazards
What is the FIRST step a competent person must take before allowing workers to use a tube-and-coupler scaffold at the start of each work shift?
Inspection And Tagging
What purpose does a mud sill serve in a tube-and-coupler scaffold system?
During dismantling of a tube-and-coupler scaffold, in what order should the work proceed?
Erection And Dismantling
Which OSHA regulation establishes the general requirements for all scaffolds in construction, including access, fall protection, and load ratings?
What is a putlog coupler used for in tube-and-coupler scaffolding?
A competent person observes that a coupler on a tube-and-coupler scaffold has a cracked body. What is the correct action?
Under ANSI A10.8, who is qualified to supervise the erection and dismantling of a tube-and-coupler scaffold?
Competent Person Duties
What is the function of a sleeve (parallel) coupler in a tube-and-coupler scaffold?
When installing a base plate under a tube-and-coupler scaffold post, the base plate serves to:
How should a leveling jack under a scaffold post be positioned at maximum extension to maintain stability?
Which ANSI standard specifically governs the design, construction, and use of scaffolding in the United States alongside OSHA 1926 Subpart Q?
Longitudinal bracing on a tube-and-coupler scaffold runs in which direction?
What minimum height above the platform surface must the top rail of a scaffold guardrail system be maintained at?
A toeboard on a scaffold platform must be at least how high to prevent objects from rolling off the edge?
When a tube-and-coupler scaffold is erected adjacent to a building with windows, which element keeps the scaffold from swaying toward the building?
What action should a competent person take when wind speeds at the worksite are dangerously high?
Environmental Hazards
What is the minimum required capacity of a scaffold and its components per OSHA 1926.451(a)(1)?
What OSHA regulation specifically covers training requirements for workers who erect, dismantle, move, operate, repair, maintain, or inspect scaffolds?
Which component of a tube-and-coupler scaffold runs perpendicular to the building face and directly supports the platform planks?
A scaffold tagging system with a red tag means:
What is the SAIA's primary role in the scaffolding industry?
What is the primary reason swivel couplers must NOT be substituted for right-angle couplers at the runner-to-post connection?
Under OSHA 1926.451, which type of access is generally preferred for tube-and-coupler scaffolds?
What is the maximum allowable extension of a scaffold plank beyond its end support (the bearer) to prevent tipping?
Question · Hard
When erecting a tube-and-coupler scaffold adjacent to an excavation, what additional consideration governs post placement?
Which of the following is NOT a required component of a complete tube-and-coupler scaffold fall protection system?
During a pre-shift inspection, a competent person notices that a mid-rail on a working scaffold has been removed to allow material handling. What is the correct response?
What condition renders a scaffold plank unfit for use?
When two scaffold planks are lapped over a bearer, the overlap on each plank must be at least:
What is the competent person's authority regarding scaffold safety on a construction site?
Which of the following best describes transverse bracing in a tube-and-coupler scaffold?
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