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According to OSHA 1926.451, what is the minimum width requirement for scaffold planks?

Correct Answer

A) 18 inches

OSHA 1926.451(b)(2) requires scaffold platforms to be at least 18 inches wide. This minimum width provides adequate working space and safety for workers.

Answer Options
A
18 inches
B
20 inches
C
24 inches
D
30 inches

Why This Is the Correct Answer

OSHA 1926.451(b)(2) specifically mandates that scaffold platforms must be at least 18 inches wide to ensure adequate working space for construction workers. This minimum width requirement is designed to provide sufficient room for workers to perform their tasks safely while maintaining proper balance and stability. The 18-inch standard has been established based on ergonomic studies and safety analysis to reduce the risk of falls and accidents on scaffolding systems.

Why the Other Options Are Wrong

Option B: 20 inches

20 inches exceeds the minimum requirement and while it would be acceptable, it is not the regulatory minimum specified in OSHA 1926.451(b)(2).

Option C: 24 inches

24 inches is significantly wider than the required minimum and would be unnecessarily restrictive as a minimum standard, though such width would be compliant.

Option D: 30 inches

30 inches is far beyond the minimum requirement and would be impractical as a minimum standard for most construction applications.

Memory Technique

Think '18 and safe' - 18 inches is the minimum width to keep workers safe on scaffold platforms.

Reference Hint

OSHA Construction Standards 29 CFR 1926, Subpart L - Scaffolds, Section 1926.451(b)(2)

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