Structural Rehabilitation and Strengthening of RC Structures: Building Assessment
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Questions and Answers

What is the purpose of the bar locator in the second survey of structural failure assessment?

  • To measure the cover thickness of reinforcement bars (correct)
  • To identify the symptoms of structural distress
  • To apply diagnostic inspection and testing
  • To assess the knowledge on structural distress analysis

What is the primary focus of non-destructive evaluation in the process of building assessment?

  • Assess the structural condition
  • Apply diagnostic inspection and testing (correct)
  • Identify the symptoms of structural distress
  • Measure the cover thickness of reinforcement bars

In structural failure assessment, what does the Ground Penetrating Radar (GPR) use to penetrate concrete?

  • Electromagnetic waves
  • Dielectric constant
  • Electrical conductivity of media
  • All of the above (correct)

What is the main purpose of the Remedial Measures in the building assessment process?

<p>Implement strengthening measures (A)</p> Signup and view all the answers

What does the process of First Survey involve in structural failure assessment?

<p>Observe any surface discontinuities (B)</p> Signup and view all the answers

Which method is suitable for studying aggregates arrangement, presence of voids, internal cracks, segregation, honey-combed, and reinforcement bar condition and position?

<p>Radiography (B)</p> Signup and view all the answers

Which method is relatively 'destructive' and represents the most reliable method of establishing in-situ concrete strength?

<p>Core drilling (C)</p> Signup and view all the answers

What does the rebound hammer primarily test?

<p>Surface hardness (D)</p> Signup and view all the answers

Which method involves X-rays or gamma-rays penetrating through concrete samples to collect images of changes in thickness or density?

<p>Radiography (C)</p> Signup and view all the answers

Which method involves measuring the speed of sound and can be used to detect voids, honeycombs, measure crack depth, and estimate strength?

<p>Ultrasonic method (D)</p> Signup and view all the answers

What is the purpose of the second survey in structural failure assessment?

<p>To measure cover thickness and locate reinforcement bar using ground penetrating radar (B)</p> Signup and view all the answers

What is the primary focus of non-destructive evaluation in the process of building assessment?

<p>Using diagnostic inspection and testing to assess structural condition (C)</p> Signup and view all the answers

Which method involves X-rays or gamma-rays penetrating through concrete samples to collect images of changes in thickness or density?

<p>Neutralization, carbonation, and pH tests (B)</p> Signup and view all the answers

What does the rebound hammer primarily test?

<p>Concrete strength (B)</p> Signup and view all the answers

Which method is relatively 'destructive' and represents the most reliable method of establishing in-situ concrete strength?

<p>Core testing (D)</p> Signup and view all the answers

What is the main purpose of the Remedial Measures in the building assessment process?

<p>Repair or rehabilitation of non-structural components (D)</p> Signup and view all the answers

Which method involves assessing the potential strength, in-situ cube strength, load factor, and degree of deterioration due to loads or environmental causes?

<p>Core drilling (C)</p> Signup and view all the answers

What is the purpose of the Windsor Probe Penetration Test?

<p>To measure compressive strength by calibration charts (C)</p> Signup and view all the answers

Which method primarily involves estimating concrete strength with an estimation error of approximately 30%?

<p>Rebound hammer (C)</p> Signup and view all the answers

In structural failure assessment, which method can be used to monitor mixing materials, concrete uniformity, detect void or honeycombs, and measure crack depth?

<p>Ultrasonic method (C)</p> Signup and view all the answers

What does the rebound hammer primarily test?

<p>Surface hardness (A)</p> Signup and view all the answers

Which method involves X-rays or gamma-rays penetrating through concrete samples to collect images of changes in thickness or density?

<p>Radiography (D)</p> Signup and view all the answers

What is the primary focus of non-destructive evaluation methods in structural failure assessment?

<p>Detecting internal structures (C)</p> Signup and view all the answers

What is the main purpose of the Remedial Measures in the building assessment process?

<p>To repair structural damage (C)</p> Signup and view all the answers

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