Chapter 5 of 521% of exam

Safety

Safety is about 21% of the exam — up from 17% in the 2022 study guide. It covers employee safety (programs, PPE, wet cement, silica, heat, noise) and job site safety (falls, impalement, pumps, power lines, traffic, housekeeping and the environment), under Cal/OSHA's Title 8. For worked examples, traps and full explanations, see the PrepPass CSLB C-8 Concrete Study Guide.

Employee safety

Every employer keeps an Injury and Illness Prevention Program and a Code of Safe Practices, trains workers at hire, and holds tailgate meetings at least every 10 working days. Wet cement is caustic: waterproof boots and gloves, kneepads, no jewelry, and immediate washing with clean water. Silica controls follow Title 8 Table 1 — water on saws and breakers. Heat rules require a quart of water per worker per hour, shade above 80 °F, and high-heat procedures at 95 °F.

Silica
Action level 25 μg/m³; PEL 50 μg/m³ (8-hour TWA).
Noise
90 dBA for 8 hours; 95 dBA for 4 hours; 100 dBA for 2 hours.
Eye flushing
Clean water readily accessible wherever corrosive materials can reach the eyes.

Job site safety

Personal fall protection is required for falls over 7½ ft, and guardrails are 42–45 in high with a mid-rail. Protruding rebar up to 6 ft above the work surface is capped or troughed with approved covers at least 4 in square. Pumps are set up per the manufacturer, never used to lift other loads, and inspected daily. Keep booms 10 ft from lines up to 50 kV and never over them. Haulers of 2½ cu yd or more need automatic backup alarms.

Buckets
No riding and no working under them while raised or lowered.
Traffic
Traffic control to the California MUTCD; trained, visible flaggers.
Washout
Leak-proof containment; washwater has a pH near 12.

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