A scaffold platform is 28 feet long and 7 feet wide. What is the maximum gap allowed between scaffold planks?
Correct Answer
D) 1 inch
OSHA requires that gaps between scaffold planks cannot exceed 1 inch in width. This prevents tools and materials from falling through and reduces the risk of workers catching their feet in gaps.
Why This Is the Correct Answer
OSHA 29 CFR 1926.451(b)(3) specifically states that the gap between scaffold planks cannot exceed 1 inch in width. This safety requirement is designed to prevent tools, materials, and debris from falling through the platform to workers below. The 1-inch maximum also prevents workers from catching their feet or stepping through gaps, which could cause serious falls or injuries. This standard applies regardless of the scaffold platform dimensions.
Why the Other Options Are Wrong
Option A: 2 inches
2 inches is double the OSHA maximum allowable gap and would create significant safety hazards including falling objects and serious tripping risks for workers on the platform.
Option B: 1 1/2 inches
1 1/2 inches exceeds the OSHA maximum allowable gap of 1 inch. This larger gap would allow tools and materials to fall through and create a tripping hazard for workers.
Option C: 1/2 inch
1/2 inch is unnecessarily restrictive and not the OSHA standard. While smaller gaps would be safer, OSHA allows up to 1 inch, making this answer incorrect.
Memory Technique
Think 'ONE inch max for ONE safe step' - you can safely step over a 1-inch gap but anything larger becomes dangerous.
Reference Hint
OSHA 29 CFR 1926.451 - Scaffolds General Requirements, subsection (b)(3) regarding platform construction
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