C33 Job-Specific Estimating: Material and Labor Calculations 2

Question 1

A C-33 contractor must paint 2,400 sq ft of smooth drywall with two coats. The paint covers 350 sq ft per gallon. Accounting for 10% waste, how many gallons are needed?

Accepted Answer

15 gallons

Answer

Two coats x 2,400 sq ft = 4,800 sq ft. At 350 sq ft/gal: 4,800/350 = 13.7 gal. With 10% waste: 13.7 x 1.10 = 15.07, rounded to 15 gallons.

Question 2

When estimating labor for exterior painting, which surface type typically requires the MOST labor hours per 100 square feet?

Accepted Answer

Ornamental wrought iron

Answer

Ornamental wrought iron requires the most labor due to its complex geometry and need for careful brush work on intricate details.

Question 3

A bid requires painting 80 windows (standard double-hung, 3x5 ft). Industry standard production rate is 4 windows per hour for brush and roller. How many labor hours should be estimated?

Accepted Answer

20 hours

Answer

At 4 windows per hour: 80 windows / 4 = 20 labor hours for the painting operation alone.

Question 4

A C-33 contractor is pricing a commercial repaint. The overhead rate is 45% and desired profit margin is 12%. If direct costs are $22,000, what is the correct bid price?

Accepted Answer

$36,250

Answer

Direct costs $22,000 + overhead (45%) $9,900 = $31,900. For 12% profit margin: $31,900 / (1 - 0.12) = $36,250.

Question 5

When estimating paint for a room with standard 8-foot ceilings, which shortcut formula gives approximate wall area?

Accepted Answer

Room perimeter x ceiling height, minus 20 sq ft per door and 15 sq ft per window

Answer

Wall area = room perimeter x ceiling height. Then subtract approximately 20 sq ft per standard door and 15 sq ft per standard window for openings.

C33 - C-33 California Painting Contractor License Practice Test

C33 - C-33 California Painting Contractor License Practice Test

C33 Job-Specific Estimating: Material and Labor Calculations 2