Struck-by and Caught-in/Between Hazards Flashcards

Under 1926.201, highway work zone signs, signals, and flagger practices must meet which standard?

Answer: The MUTCD (Manual on Uniform Traffic Control Devices)

OSHA 1926.201 and 1926.202 incorporate FHWA's MUTCD Part 6 for temporary traffic control in work zones.

Which ANSI/ISEA 107 high-visibility garment class is recommended for flaggers on high-speed roadways at night?

Answer: Class 3

Class 3 garments have the most background and retroreflective material and suit high-speed traffic and low-light work.

Which hard hat type, per ANSI/ISEA Z89.1, protects against both top and lateral (side) impacts?

Answer: Type II

Type II helmets are tested for top and lateral impact, while Type I covers top impact only.

Under 1926.252(b), debris dropped through floor holes without a chute requires barricades of what minimum height and setback?

Answer: 42 inches high, 6 feet back from the projected edge of the opening above

The drop area must be enclosed by barricades at least 42 inches high and at least 6 feet back from the projected edge of the opening above, with warning signs posted.

Under 1926.250, what must be done when masonry blocks are stacked higher than 6 feet?

Answer: The stack must be tapered back one-half block per tier above the 6-foot level

Block stacks above 6 feet must be tapered back a half block per tier so they cannot topple onto workers.

What is the most effective way to protect workers below scaffolds from falling tools and materials?

Answer: Toeboards, screens, or debris nets, plus barricading the area below

1926.451(h) and 1926.502(j) call for toeboards, screens, debris nets, canopies, or barricades to protect workers from falling objects.

In a work zone, workers on foot are struck most often by which piece of equipment?

Answer: Backing vehicles and equipment

BLS and NIOSH data show that backing dump trucks and other construction vehicles cause a large share of worker-on-foot struck-by deaths in work zones.