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Health & Ergonomics

5 guides

Heat, noise, lifting, silica and other exposures.

All Concrete & Masonry Paving & Earthwork Rigging & Lifting OSHA Compliance Safety Programs & Training Health & Ergonomics

Health & Ergonomics · 8 min read

How Cold Is Too Cold to Work Outside?

No legal minimum temperature exists. Here is what actually decides it: wind chill, wetness and workload, plus what OSHA expects employers to do about cold.

Health & Ergonomics · 8 min readPopular

OSHA Silica Table 1 Explained

All 18 tasks with their required respirator, the four-hour shift-total rule, and what Table 1 does not excuse.

Health & Ergonomics · 9 min read

NRR Derating Explained: What an Earplug Actually Blocks

The 7 dB subtraction, the 50% safety factor and the NIOSH percentages — which method applies when, and to what.

Health & Ergonomics · 5 min read

The NIOSH Lifting Equation Explained (With a Worked Example)

The six multipliers, the Lifting Index, and a real example where raising a pallet halves the risk.

Health & Ergonomics · 5 min read

OSHA Noise Exposure Limits: the 90 dBA PEL vs the NIOSH 85 dBA REL

Two limits, two exchange rates, very different allowed exposure times — and what each one obliges you to do.