Testing and Monitoring Equipment for Construction Hazards
CHST written lesson, 11 min read. CHST Domain 1: Hazard and Risk Identification and Control
Written with AI help from the rules it covers, then fact-checked against them. Study aid, not site-specific safety advice. The official rule controls.
What you'll learn
- Match common construction hazards to the right instrument
- State the gas testing order for confined spaces and the excavation atmosphere triggers
- Compute a mixed noise exposure using the 1926.52 formula
- Explain why calibration and bump checks matter
What this lesson covers
This lesson covers the basic instruments used on construction sites (multi-gas meters, sound level meters and noise dosimeters, and air sampling pumps) and how to match each to the hazard. It matters because CHST questions ask which instrument fits a hazard, what order to test in, and how to read results against OSHA rules.
This lesson is included with a pass
Written lessons come with every CHST pass, along with the video lessons, the question bank, mocks and the tutor. $80 per exam for 6 months, or $143 for all three for 12 months.
Try the free construction safety math: noise and excavation slopes practice questions