A construction crew is installing scaffolding that will be 32 feet high. According to OSHA standards, what is the maximum spacing allowed between scaffold planks?
Correct Answer
C) 1 inch
OSHA 29 CFR 1926.451 requires that the space between scaffold planks cannot exceed 1 inch, except at the platform ends where it cannot exceed 9.5 inches. This prevents tools and materials from falling through gaps.
Why This Is the Correct Answer
OSHA 29 CFR 1926.451(b)(3) specifically states that the space between scaffold planks cannot exceed 1 inch. This regulation applies to all scaffolding regardless of height and is designed to prevent tools, materials, and debris from falling through gaps between planks. The 1-inch maximum spacing ensures worker safety below the scaffold while still allowing for normal thermal expansion and construction tolerances of the planking materials.
Why the Other Options Are Wrong
Option B: 2 inches
2 inches is double the OSHA maximum allowable spacing and would create significant safety hazards, allowing tools, fasteners, and debris to easily fall through gaps between planks.
Option D: 1/2 inch
1/2 inch spacing, while safer, is unnecessarily restrictive and not required by OSHA standards. This would make scaffold installation more difficult and costly without providing additional safety benefits.
Memory Technique
Think 'ONE inch max' - use your index finger (one finger = one inch) as a visual reminder of the maximum gap allowed between scaffold planks.
Reference Hint
OSHA Construction Standards 29 CFR 1926 Subpart L - Scaffolds, specifically section 1926.451(b)(3) for platform requirements
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