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Technical Measurements Flashcards

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

Read the first 7 Technical Measurements flashcards as text

  1. How many cubic yards of concrete are needed for a 30 ft x 40 ft slab that is 4 inches thick (no waste)?

    Answer: 14.8 cubic yards

    30 x 40 x 0.333 ft = 400 cubic feet, and 400 / 27 = 14.8 cubic yards.

  2. How many board feet are in one 2x10 that is 16 feet long (nominal dimensions)?

    Answer: 26.67 board feet

    Board feet = (2 x 10 x 16) / 12 = 26.67.

  3. In roofing estimates, one 'square' covers how much roof area?

    Answer: 100 square feet

    A roofing square equals 100 square feet of roof surface.

  4. What does a roof pitch of 6/12 mean?

    Answer: 6 inches of rise for every 12 inches of horizontal run

    Pitch is written as inches of rise per 12 inches of horizontal run.

  5. How many 4x8 drywall sheets are needed to cover one side of a wall 12 ft long and 8 ft high, with no openings or waste?

    Answer: 3

    96 sq ft of wall / 32 sq ft per sheet = 3 sheets.

  6. Using the 3-4-5 method to check a corner for square, one leg measures 6 ft and the other 8 ft. What should the diagonal measure?

    Answer: 10 ft

    6-8-10 is the 3-4-5 ratio doubled, so the corner is square when the diagonal is 10 ft.

  7. What is the area of a circular patio with a 10-foot diameter?

    Answer: 78.5 square feet

    Area = π x r² = 3.1416 x 5² ≈ 78.5 square feet.

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Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

  1. portal.ct.gov — Eligibility · verified Oct 2026
  2. phta.org — Score validity, test delivery, exam dates, registration deadline, score release, test dates, fees, exam format, passing score, time limit · verified Oct 2026