C33 Job-Specific Estimating: Material and Labor Calculations 3

Question 1

A C-33 contractor needs to estimate scaffolding costs for a building with 200 feet perimeter. Scaffold rental is $8 per linear foot per month. The project will take 3 weeks. What is the scaffold cost?

Accepted Answer

$1,600

Answer

Scaffold rental = 200 linear feet x $8/ft per month = $1,600 per month. At 3 weeks (less than 1 month), the cost is one month's rental: $1,600.

Question 2

When estimating a painting project, what does the term 'spread rate' refer to?

Accepted Answer

The area a gallon of paint covers at the recommended film thickness

Answer

Spread rate is the coverage area (in square feet) that one gallon of paint will cover when applied at the manufacturer's recommended film thickness.

Question 3

A crew of 3 painters can complete 1,200 sq ft of interior wall painting per day. A project has 9,600 sq ft. Adding a 4th painter increases daily output by 30%. How many days with 4 painters?

Accepted Answer

6 days

Answer

With 3 painters: 1,200 sq ft/day. Adding 4th painter: 1,200 x 1.30 = 1,560 sq ft/day. Project: 9,600 / 1,560 = 6.15, rounded to 6 days.

Question 4

What percentage of a commercial interior repaint's total cost typically goes to materials?

Accepted Answer

15-25%

Answer

For commercial interior repaints, materials typically represent 15-25% of total project cost, with labor and overhead comprising the remaining 75-85%.

Question 5

A C-33 contractor measures a gable wall that is triangular: 30 feet wide at the base and 12 feet high at the peak. What is the paintable area?

Accepted Answer

180 sq ft

Answer

Area of a triangle = (base x height) / 2 = (30 x 12) / 2 = 180 square feet.

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 3