Practice Quiz

FE Civil Engineering Exam Prep

Category - Civil Engineering

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Which of the following assumptions regarding the compression strength of concrete used in reinforced concrete beam design is valid?
  1. The American Concrete Institute (ACI) recommends that all beams be designed using high strength concrete
  2. High strength concrete compression strengths range from 3,000 to 7,000 pounds per square inch
  3. Compression strength of normal concrete ranges from 3,000 to 7,000 pounds per square inch
  4. None of the above
Explanation
Answer: C - The assumption “compression strength of normal concrete ranges from 3,000 to 7,000 pounds per square inch” for the concrete used in reinforced concrete beam design is valid. ACI does not recommend that high strength concrete be used in the design of all beams. The compression strength of high strength concrete ranges from 7,000 - 15,000 pounds per square inch.
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