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Technical Measurements Flashcards

7 cards from real CST 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. A steel tape standardized at 68°F (coefficient 0.00000645/°F) measures 100.00 ft at 88°F. What is the temperature correction?

    Answer: +0.013 ft

    Ct = 0.00000645 × (88 − 68) × 100 = +0.013 ft, positive because the tape expands in heat.

  2. A 100-ft tape is actually 100.02 ft long. A distance recorded as 400.00 ft with this tape has a true length of:

    Answer: 400.08 ft

    Each full tape length is 0.02 ft longer than recorded, so 4 × 0.02 = +0.08 ft.

  3. A slope distance of 200.00 ft is measured between points with a 10.00 ft elevation difference. What is the horizontal distance?

    Answer: 199.75 ft

    H = √(200² − 10²) = √39,900 ≈ 199.75 ft.

  4. The sag correction for a tape supported only at its ends is always:

    Answer: Negative, because the recorded distance is too long

    A sagging tape's chord is shorter than the tape reading, so the correction is subtracted.

  5. A technician takes 40 paces to cover a known 100-ft course. How far is a line that takes 260 paces?

    Answer: 650 ft

    Pace length is 100/40 = 2.5 ft, and 260 × 2.5 = 650 ft.

  6. When taping down a steep slope, 'breaking tape' means:

    Answer: Measuring shorter horizontal segments and plumbing down at each one

    Breaking tape keeps the tape horizontal by measuring short segments and using a plumb bob at each point.

  7. A Gunter's chain is 66 ft long. How many feet are in 12 chains?

    Answer: 792 ft

    12 × 66 = 792 ft.