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Air Change Rate Calculator

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Safety

Air Changes Per Hour: Ventilation Standards and Dilution Requirements

Understanding ACH calculations, recommended air change rates by occupancy, ACGIH dilution ventilation, and OSHA confined space air requirements.

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Lockout/Tagout Permit Manager

Create OSHA-compliant LOTO permits for equipment energy isolation. Track electrical, pneumatic, hydraulic, and thermal energy sources with lock assignments and zero-energy verification.

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Scaffold Load & Tie Calculator

OSHA 1926.451 scaffold loading calculator. Determine platform capacity, leg loads, mudsill sizing, and tie spacing for light, medium, and heavy-duty scaffolding.

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Fire Sprinkler Hydraulic Calculator

NFPA 13 sprinkler hydraulic calculator. Compute flow using K-factor, Hazen-Williams friction loss in piping, and total system demand at the riser with hose stream allowance.