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Blueprint Reading & Specifications 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. On a demolition blueprint, what does a dashed or hidden line typically represent?

    Answer: A feature hidden behind or below the current view

    Hidden lines (dashed) indicate edges or features that exist but are not directly visible from the current viewing angle.

  2. A demolition specification section labeled '02 41 00' refers to which CSI MasterFormat division?

    Answer: Division 02 – Existing Conditions

    CSI MasterFormat Division 02 covers Existing Conditions, which includes demolition work such as section 02 41 00 Demolition.

  3. When a structural drawing notes 'REMOVE AND SALVAGE,' what action is required of the demolition crew?

    Answer: Carefully remove the element and store it for reuse or owner retention

    'Remove and Salvage' means the item must be carefully removed and preserved for reuse, resale, or owner retrieval.

  4. A floor plan scale of 1/4" = 1'-0" means a wall drawn 3" long on paper represents how many feet in the field?

    Answer: 12 feet

    At 1/4" = 1'-0", each inch equals 4 feet; a 3" line represents 3 × 4 = 12 feet.

  5. On a demolition site plan, a symbol showing a circle with an X inside typically denotes what?

    Answer: A benchmark elevation point

    A circle with an X is a standard surveying symbol for a benchmark or control point used for elevation reference.

  6. Which view in a set of blueprints would best show the vertical relationship between floors and the height of structural members to be demolished?

    Answer: Section view

    Section views cut through the building vertically and clearly show floor-to-floor heights and the vertical arrangement of structural components.

  7. A demolition specification states 'remove to subgrade.' What does this instruct the contractor to do?

    Answer: Remove material all the way down to the native or engineered soil level below slabs

    'To subgrade' means excavating or demolishing down to the prepared soil surface below any slab, base course, or fill.

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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