Practice Test Geeks(CDS) Certified Demolition Supervisor Practice Test
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Safety Standards & Hazardous Material Handling Flashcards

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

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  1. Under OSHA 29 CFR 1926.850, what must be done before demolition work begins on any structure?

    Answer: Conduct an engineering survey to assess structure condition

    OSHA 1926.850 requires a competent person to perform an engineering survey before any demolition to assess structural stability and hazards.

  2. Which respirator protection factor is required when workers are exposed to asbestos fibers above the PEL but at or below 10 times the PEL during demolition?

    Answer: Half-face air-purifying respirator with HEPA filters

    A half-face air-purifying respirator with HEPA filters provides APF of 10, adequate for exposures up to 10× the asbestos PEL.

  3. What is the correct disposal classification for PCB-containing materials removed from transformers during demolition under TSCA regulations?

    Answer: Classified as hazardous waste requiring manifest and EPA-approved disposal facility

    PCB-containing materials are regulated under TSCA and must be disposed of as hazardous waste at an EPA-approved facility with a manifest.

  4. During the demolition of a structure with suspected lead paint, at what airborne lead concentration must a full written compliance program be implemented?

    Answer: Above the PEL of 50 μg/m³

    OSHA 29 CFR 1926.62 requires a full written compliance program when airborne lead exceeds the PEL of 50 μg/m³ as an 8-hour TWA.

  5. What is the minimum safe standoff distance from a demolition zone for unprotected bystanders when using mechanical demolition equipment on a 3-story building?

    Answer: One and a half times the height of the structure

    OSHA guidelines recommend a standoff distance of at least 1.5 times the height of the structure to protect against falling debris.

  6. Which federal agency regulates the transportation of hazardous demolition waste such as mercury-containing devices off-site?

    Answer: DOT via PHMSA

    The Department of Transportation through PHMSA regulates the transport of hazardous materials, including demolition waste containing mercury.

  7. What action is required when a demolition supervisor discovers an unmarked drum of unknown liquid in a structure scheduled for demolition?

    Answer: Treat it as hazardous and initiate a hazmat response protocol

    Unknown substances must be treated as hazardous until identified; the supervisor must stop work and initiate a hazmat response protocol.

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Sources & references

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  1. demolitionassociation.com — Test delivery, test dates, score validity, fees, exam format, passing score, retake fee, retake policy, score release · verified Oct 2026