Practice Quiz

FE Civil Engineering Exam Prep

Category - Civil Engineering

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What is the amount of tension that should be applied to the spring balance of the end of a steel tape to yield the proper tension to the 75-ft increment? (Assume the final measurement in the line of tape is 75 ft and the normal 100-foot tape tension is 10 pounds (lbs).)
  1. 7.5 lbs
  2. 10 lbs
  3. 75 lbs
  4. None of the above
Explanation
Answer: A - 7.5 lbs. of tension should be applied to the 75-ft increment of tape.

Solution: Use the steel tape correction factor applied to the length of measurement

Tension = 10 lbs. /100 ft = 0.1 lb. /ft

Correction = (0.1 lb. /ft) (75 ft) = 7.5 lbs
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