Practice Test Geeks(ACI) American Concrete Institute Concrete Finisher Practice Test
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Environmental & Worker Safety Flashcards

7 cards from real ACI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Environmental & Worker Safety flashcards as text

  1. What is the OSHA permissible exposure limit (PEL) for respirable crystalline silica over an 8-hour shift?

    Answer: 0.05 mg/m³

    OSHA's PEL for respirable crystalline silica is 0.05 mg/m³ as an 8-hour time-weighted average.

  2. When working with concrete in hot weather, which condition most increases the risk of heat stroke for finishers?

    Answer: High humidity combined with high temperature

    High humidity prevents sweat from evaporating effectively, reducing the body's ability to cool itself and dramatically increasing heat stroke risk.

  3. Which type of respirator provides the highest level of protection against concrete dust containing silica?

    Answer: N95 filtering facepiece

    An N95 respirator filters at least 95% of airborne particles and is the minimum NIOSH-approved option recommended for silica dust exposure.

  4. Concrete washout water is classified as what type of waste requiring proper disposal?

    Answer: Alkaline hazardous waste

    Concrete washout water has a very high pH (11–13) and is classified as an alkaline hazardous waste that must not be discharged to storm drains.

  5. What does the SDS (Safety Data Sheet) Section 8 specifically address?

    Answer: Exposure controls and personal protective equipment

    SDS Section 8 covers exposure controls including OELs, engineering controls, and required PPE for safe handling.

  6. A concrete finisher notices a co-worker showing signs of alkali burns from wet concrete. What is the immediate first aid action?

    Answer: Flush affected area with large amounts of clean water for at least 20 minutes

    Prolonged flushing with clean water dilutes and removes the alkaline material, which is the correct first aid response before medical attention.

  7. Under OSHA's Silica Standard for construction (29 CFR 1926.1153), which control method is listed as the preferred hierarchy over all others?

    Answer: Engineering controls such as water suppression or local exhaust ventilation

    OSHA's hierarchy of controls places engineering controls at the top, meaning wet methods or LEV must be implemented before relying on respirators.