Quality Control & Inspection Flashcards
7 cards from real CFB practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Quality Control & Inspection flashcards as text
What information must be documented on a concrete cylinder test report per ASTM C39?
Answer: Identification, sample location, date cast, curing conditions, age at test, and compressive strength
ASTM C39 requires the test report to include specimen identification, casting date, curing conditions, age at testing, dimensions, and the compressive strength result for complete traceability.
Which inspection technique is best suited to detect surface cracks in non-ferromagnetic materials like aluminum welds?
Answer: Liquid penetrant testing (PT)
Liquid penetrant testing uses a dye that seeps into surface-breaking discontinuities and is suitable for all non-porous materials regardless of magnetic properties.
A field builder confirms that the interior ambient temperature has dropped to 35°F during the curing of freshly placed concrete. The BEST immediate corrective action is:
Answer: Provide supplemental heat or insulated blankets to maintain concrete temperature above 50°F
ACI 306R (Cold Weather Concreting) requires maintaining fresh concrete temperature above 50°F to sustain cement hydration; heating or insulation is required when ambient temperatures threaten to lower concrete temperature.
When a product substitution is proposed in the field, which party has the authority to approve it on a project with a design professional of record?
Answer: The owner's representative and the design professional of record
Substitutions must be reviewed by the design professional of record to confirm equivalency and must be accepted by the owner's representative, as both have contractual authority over specification compliance.
What is the purpose of torque-testing a sample of installed structural bolts after tightening to the final snug-tight condition?
Answer: To confirm that the required pretension or torque level has been achieved
Torque testing (turn-of-nut or calibrated wrench method) verifies that the installed bolt has achieved the specified pretension required for a proper bolted connection per AISC/RCSC standards.
An inspection log entry shows that special inspection was 'periodic' when the specification required 'continuous' inspection for a critical welding operation. What is the consequence?
Answer: The affected work may need to be rejected, re-inspected, or remediated to satisfy the engineer's acceptance
When continuous inspection is required and not performed, the work completed without proper oversight may not be accepted; the engineer of record must determine if additional testing or removal is required.
Which of the following correctly describes the 'first article inspection' concept in field quality control?
Answer: A thorough inspection of the first completed unit or assembly to verify the process will produce conforming work before production continues
First article inspection evaluates the initial completed product or assembly against all requirements to confirm the process, materials, and crew can produce conforming work before the full scope proceeds.