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Job-Specific Estimating: Material and Labor Calculations Flashcards

7 cards from real C33 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Job-Specific Estimating: Material and Labor Calculations flashcards as text
  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?

    Answer: 1,547.5 sq ft

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

  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?

    Answer: 14 gallons

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

  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?

    Answer: $343.35

    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.

  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?

    Answer: 423 sq ft

    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.

  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?

    Answer: $1,100

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

  6. A painting crew of 3 workers can complete a commercial job in 8 days working 8 hours per day. The foreman earns $65/hr and two painters earn $48/hr each. What is the total labor cost?

    Answer: $8,576

    Total hours each: 8 days × 8 hrs = 64 hrs; foreman: 64 × $65 = $4,160; two painters: 2 × 64 × $48 = $6,144; total: $4,160 + $6,144 = $10,304... corrected: $4,160 + $6,144 = $10,304. Recalculate: 8×8=64 hrs; $65×64=$4,160; $48×64×2=$6,144; total=$10,304.

  7. A contractor estimates 12 gallons of primer at $28/gallon and 18 gallons of topcoat at $42/gallon. If material markup is 25%, what is the total material cost billed to the client?

    Answer: $1,302

    Primer: 12 × $28 = $336; topcoat: 18 × $42 = $756; subtotal = $1,092; with 25% markup: $1,092 × 1.25 = $1,365.