Question 1
A rectangular sheet metal duct measuring 24 inches wide by 12 inches high handles an airflow rate of 2,400 CFM. What is the average air velocity inside the duct in feet per minute (FPM)?
Correct Answer:
1,200 feet per minute average velocity
Question 2
A sheet metal estimator calculates that a duct system requires 150 square feet of 24-gauge galvanized steel sheet. If 24-gauge steel weighs 1.156 pounds per square foot, what is the net weight of the sheet metal required?
Correct Answer:
173.4 pounds of galvanized sheet steel
Question 3
Under California Contractors State License Board (CSLB) contracting rules, what is the maximum down payment a sheet metal contractor may legally collect on a home improvement contract?
Correct Answer:
$$1,000 or 10% of contract price, whichever is lower
Question 4
What is the net surface area of sheet metal required to fabricate a straight 20-foot rectangular duct section measuring 18 inches wide by 12 inches high (excluding seams and overlaps)?
Correct Answer:
100 square feet of total sheet metal
Question 5
According to California Title 24, Part 6 energy efficiency standards, what is the maximum allowable total duct leakage rate for new residential HVAC duct installations during field verification testing?
Correct Answer:
5 percent of total system airflow rating
Question 1
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About this Exam

Prepare with the California C-43 Sheet Metal Practice Questions - California CSLB C-43 Sheet Metal Examination Exam practice quiz. This question bank includes 100 questions covering sheet, duct, metal, rectangular, and smacna. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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California C-43 Sheet Metal Practice Questions - California CSLB C-43 Sheet Metal Examination Exam

This practice set contains 100 questions from the matching question bank and focuses on sheet, duct, metal, rectangular, and smacna. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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