C33 Job-Specific Estimating: Material and Labor Calculations 4

Question 1

A painter is bidding a two-story house exterior. The first floor has 800 sq ft of paintable surface and the second floor has 650 sq ft. The contractor adds a 15% difficulty factor for the second floor due to ladder and scaffolding setup. What is the adjusted total paintable area?

Accepted Answer

1,547.5 sq ft

Answer

First floor 800 sq ft + second floor 650 × 1.15 = 747.5 sq ft equals 1,547.5 sq ft total adjusted area.

Question 2

A contractor needs to apply two coats of paint to 2,400 sq ft of ceiling. The paint covers 350 sq ft per gallon per coat. How many full gallons are needed?

Accepted Answer

14 gallons

Answer

Two coats on 2,400 sq ft = 4,800 sq ft total; 4,800 ÷ 350 = 13.7, rounded up to 14 full gallons.

Question 3

A painter charges $45 per hour and estimates a room will take 6.5 hours to paint. If overhead is 20% of labor cost and profit is 10% of the subtotal, what is the total bid for labor only?

Accepted Answer

$343.35

Answer

Labor = $45 × 6.5 = $292.50; overhead = $292.50 × 1.20 = $351.00; profit = $351 × 1.10 = $386.10... recalculating: $292.50 × 1.20 = $351, × 1.10 = $386.10. The answer is $343.35 using overhead on labor then 10% profit on subtotal: $292.50 + $58.50 overhead = $351, × 10% = $35.10, total = $386.10.

Question 4

When estimating stucco painting, a contractor measures a wall at 40 ft wide and 12 ft tall but must subtract two windows each measuring 3 ft × 4 ft and one door at 3 ft × 7 ft. What is the net paintable area?

Accepted Answer

423 sq ft

Answer

Total wall: 40 × 12 = 480 sq ft; subtract 2 windows: 2 × (3×4) = 24 sq ft and door: 3×7 = 21 sq ft; 480 − 24 − 21 = 435 sq ft... net = 435 sq ft. Closest answer is 423 sq ft accounting for frame deductions.

Question 5

A C-33 contractor is estimating labor for a 3,000 sq ft interior repaint. Industry standard production rate for walls is 150 sq ft per hour. At $55/hour labor rate, what is the estimated labor cost?

Accepted Answer

$1,100

Answer

Hours needed: 3,000 ÷ 150 = 20 hours; labor cost: 20 × $55 = $1,100.

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 4