Walking and Working Surfaces Flashcards
7 cards from real COSS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Walking and Working Surfaces flashcards as text
When inspecting a stepladder, a safety officer notices the spreader bars are bent but the ladder is otherwise intact. What is the correct action?
Answer: Remove the ladder from service immediately
Damaged spreader bars compromise the ladder's structural stability; the ladder must be removed from service immediately until properly repaired or replaced.
Under OSHA's walking-working surfaces standard, what is the minimum height of a standard guardrail for general industry?
Answer: 42 inches
OSHA 1910.29(b)(1) requires the top rail of a guardrail system to be 42 inches (plus or minus 3 inches) above the walking-working surface.
An employee is working on a roof with a slope of 4:12. Under OSHA 1926.502, which fall protection method is NOT acceptable for this slope?
Answer: Warning line system used alone without other protection
A warning line system alone is only acceptable on low-slope roofs and must be combined with a safety monitoring system, guardrails, or PFAS — it cannot stand alone on steeper slopes.
Which of the following best defines a 'hole' under OSHA's walking-working surfaces standard?
Answer: A gap or void 2 inches or more in its least dimension in a floor, roof, or walking-working surface
OSHA 1910.21 defines a hole as a gap or void 2 inches or more in its least dimension in a floor, roof, or other walking-working surface.
What action is required when a fixed ladder extends more than 24 feet without an intermediate platform or safety device?
Answer: Install a personal fall arrest system or ladder safety system
OSHA 1910.23 requires fixed ladders over 24 feet to be equipped with a personal fall arrest system or ladder safety system; cages are no longer an accepted fall protection method under the updated standard.
A mid-rail in a standard guardrail system must withstand an outward or downward force of at least how many pounds?
Answer: 150 lbs
OSHA 1910.29(b)(3) requires midrails, screens, mesh, and intermediate members to withstand a force of at least 150 pounds applied downward or outward.
Which condition requires a dockboard or bridgeplate to be secured to prevent movement during loading/unloading?
Answer: Always, when used for powered industrial truck traffic
OSHA requires dockboards used for powered industrial truck (forklift) traffic to be secured to prevent movement, protecting workers from falls between the vehicle and dock.