Construction Estimation Lecture Notes

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93 Terms

1
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What is the volume of a cylinder if the diameter equals 3 feet and the length equals 12 feet?

84.78 cubic feet

2
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You are bidding on a project that requires 86 board feet. The price per board foot is $1.20 with a sales tax of 8%. What would be the total cost for 86 board feet?

$111.46

3
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What is the total length of the rafters (both sides), if X = 6 feet and overhang is 2 feet?

27.32’

4
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If the slope is 4:12, what is x?

3’ 4”

5
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How many roofing squares are required for the roof shown in the image?

11

6
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The job requires 28 construction squares for siding. How many square feet of siding do you need to buy?

2800

7
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How many cubic feet is the total volume of the house below?

9600 cubic feet

8
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A contractor needs 13 receptacles that cost $3.56 each plus sales tax of 7.25%. The supplier states that for every 10 receptacles that are purchased, the contractor will get one free of charge. What is the total cost of the receptacles?

$45.82

9
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How many cubic yards of concrete is required for a 4” slab with a circumference of 25 feet?

3/4 cubic yard(s)

10
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How many linear feet of gutter do you need for a gutter shown in the illustration?

157

11
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If your client has a backyard that is 8,000 sq. ft. and 84% of the yard is lawn, how many rolls of sod is necessary to replace all the old grass if 1 single roll covers 8 sq. ft. area?

840 rolls

12
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When estimating a steep slope shingle project, you need to know the exposure of the material being used. When calculating how much metal panel roofing you will need to complete a project, you need to know the _.

profile coverage

13
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Refer to the 1st floor Electric blueprint. How many three-way switches are needed?

1

14
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Calculate the total cost of trusses needed for a new framing project, where a gable roof is 50’ long, each truss is spaced every 24” and the price of each truss is $80.

$2,080

15
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How long is the hypotenuse?

11.18’

16
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Who should you contact if you want to change the location of a driveway on a newly purchased plot of land?

Zoning department

17
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How many rolls of #15 felt paper are required for the roof shown in the image not accounting for overlap?

3

18
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A brick wall is 20’ long and 22’ high, if you include a 3/8” mortar joint, how many 8”×2-1/2”×4” (L×H×W) bricks are required for this project?

2,633

19
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Refer to the 2nd floor Electric blueprint. How many ceiling fans are depicted?

3

20
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Which of the following is a low slope roof system?

Modified bitumen

21
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Please refer to the house plan. How many square feet does the patio cover (excluding sidewalk)?

460 sq ft

22
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Refer to the 1st-floor Electric blueprint. How many ceiling fans are depicted?

3

23
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The load area of a skylight is equal to the .

All of the above

24
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What is the term used to describe a vertical wall that has been properly installed?

Plumb

25
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How many kWh will be consumed by a 500w lightbulb running for 3 hours?

1.5 kWh

26
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What is the area of a cylinder that has a radius of 6 inches and height of 8 feet? Exclude the top and bottom.

25.12 sq. ft.

27
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Refer to the 1st floor Electric blueprint. How many GFCI receptacles are found on this floor level?

11

28
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Refer to the 1st-floor Electric blueprint. How many single-pole switches are needed? Exclude any special 3-way switches.

12

29
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Refer to the house plan. How many cubic yards of concrete needs to be ordered for the foundation slab that is 4 inches thick?

23 cubic yards

30
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How many cubic yards of concrete is required for a 4” slab with a diameter of 15 feet?

2 1/2 cubic yards

31
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Which plan from a set of blueprints will give the true measurement of a rake?

Elevation plan

32
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How many 4” x 4” tiles do you need to tile a 30” x 60” shower floor and three walls 60” high with ¼” grout? Allow 10% for waste.

549 tiles

33
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Having employees, a general contractor must post conspicuously, in a location frequented by employees:

The name of the current workers compensation insurance carrier

34
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Refer to the 1st floor Electric blueprint. How many duplex receptacles are found on this floor level? Exclude GFCIs.

6

35
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What is the slope of a roof that has a run of 18 feet and a rise of 4 foot and 6 inches?

3:12

36
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What is the total length for two boards, where one board is 3’ 3-½” and the second is 5’ 10- 5/8”?

9’ 2-1/8”

37
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How many square feet is found in a single roofing square of composition shingles?

100 square feet

38
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A contractor is about to start a new project but discovers damaged utilities on the site. How should the contractor proceed?

Call the utility cmpany

39
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A truck can haul 10 cubic yards at a cost of $30 per cubic yard. Each trip has a $150 delivery fee. How much will it cost to excavate a 20’×40’×10’ area?

$13,500

40
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Refer to the electrical blueprint. The 2 story house has a total of ___ smoke detectors.

5

41
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When field measuring for eave gutter on a hip and valley roof, measure from the inside corner to the outside corner of the fascia and for every outside corner, add ___ plus 4 inches for waste.

The gutter width

42
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After designing the plan with an architect, what is the first step?

Have the contractor check the plan

43
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A single pallet of synthetic turf costs $4,500. A single square foot of synthetic turf costs $2.25, therefore, how many square feet of synthetic turf are in this pallet?

2000 sq. ft.

44
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Refer to the 2nd floor Electric blueprint. How many AFI receptacles are found on this floor level? Exclude standard duplex and GFCIs.

14

45
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Refer to the 2nd floor Electric blueprint. How many single-pole switches are needed?

16

46
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How many 9” x 9” carpet tiles do you need for a 10’ x 10’ room with no pattern and no border?

178

47
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The inverter requires MINIMUM voltage input of 350 volts. How many 48-Volt modules need to be connected in a series configuration to meet the MINIMUM voltage input?

8 modules

48
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Who is finally responsible for an approved set of plans?

Contractor

49
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A 1/6 roof pitch is equal to a slope?

4:12

50
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How many 8” x 8” x 16” blocks are required for a wall 8 feet high and 60 feet long?

540

51
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What size of the circuit breaker can be installed on a line with 7 outlets 14 AWG wire?

15 Amp

52
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A brick wall has a total of 44 courses, if 3 bricks and 3 mortar joints equal 8”, then how high is the wall?

10 feet

53
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What is a permanent or well-known elevation reference point?

Benchmark

54
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What is the total drop for a 120’ pipe with a 2% slope?

2' 5”

55
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The inverter MAXIMUM input voltage is 450 volts. How many 48-Volt modules need to be connected in a series configuration to stay under MAXIMUM voltage input?

9 modules

56
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How many cubic yards of concrete are required for the footing shown, if it is 75 feet long?

2 1/2 cubic yards

57
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How is leveling performed?

Establish a benchmark and use a level

58
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What is the area of the circle if the diameter is 20 feet?

314 sq. ft.

59
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Refer to the house plan. How many square feet is the foundation slab?

1844 sq ft

60
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How many cubic yards of backfill are required for a 3’ x 5’ trench, 1500 ft long, with a 1 foot diameter pipe?

789.72

61
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Please refer to the house plan. How many cubic yards of concrete is required for the patio (excluding sidewalk), if the slab is 4 inches thick?

5.75 cubic yards

62
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The image displayed in the figure is the construction blueprint symbol for .

A supply air register

63
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How many 8” x 8” x 16” blocks are required for a wall 8 feet high and 60 feet long with a 1” mortar?

452

64
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How many cubic yards of concrete do you need for a 4” slab with an area of 20’ x 40’?

10 cu yds

65
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Refer to the 2nd floor Electric blueprint. How many GFCI receptacles are found on this floor level? Exclude the special 240-volt dryer receptacle.

5

66
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If the pitch is 1/6, then what is x?

3’ 4”

67
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How do you determine the amount of roof vents needed on a project?

According to roof area in square feet

68
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How many square feet are in 12 roofing squares?

1200

69
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If 120 GPM can flow through a 2 inch pipe, how many GPM can flow through a 4 inch pipe (not accounting for a friction loss)?

480 GPM

70
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What is the minimum required cross-sectional area of the flue for a 14 feet tall fireplace with an opening 20” x 24”?

60 square inches

71
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The roof pitch is 6/24, what is the rise given that the run is 17 feet?

8.5’

72
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Refer to the 1st and 2nd floor of the Electric blueprint. How many receptacles are needed for this whole house? Note: Include all receptacle types.

40

73
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The image displayed in the figure is the construction blueprint symbol for a .

Charging valve

74
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How many board feet are found in the vertical members of a 20’ long wall? Assume that the studs are 2×4s that are 8 feet high, and spaced at 16” o.c.

85.28 board feet

75
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How many board feet are in a 2” x 4” stud that is 8’ feet long?

5.33 board feet

76
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Refer to the house plan. What is the total cost for the foundation slab if the contractor charges $3.54 per square foot?

$6524.90

77
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How do you determine the number of trusses required on a project?

Divide the length of a trussed area by the spacing

78
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How many bundles of 30-year asphalt shingles are in a square of roofing?

3 bundles

79
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Refer to the electrical blueprint. The 2 story house has a total of ___ Carbon Monoxide detectors.

2

80
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One Square of roof is equal to;

100 square feet

81
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How many cubic yards of concrete is required for a 4” slab with the radius of 10 feet?

3.87 cubic yards

82
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For purposes of estimating, the standard roof structure can be broken into three basic shapes. Those shapes are, 1) Rectangle, 2) Triangle and 3) .

Trapezid

83
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If you finish installing a certain material, what should you do with the excess?

Move it out of the way, keep work area clean and avoid tripping hazards

84
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The slope of a roof is the sum of the divided by __?

Rise Run

85
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The minimum distance that local code requires a building to be from the street is called a:

Setback

86
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How many roofing squares are in the roof measuring 45’ by 50’?

22.5

87
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What is the square footage of a gable 12 ft. wide by 6 ft. high?

36 sq. ft.

88
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In a L shape kitchen, two perpendicular lines are 24’ each and you are told that the remaining lines are 12’ each. To install a hardwood floor, what area are you covering?

432 square feet

89
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The image displayed in figure #5 is the construction blueprint symbol for a .

Room Thermostat

90
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Refer to the 2nd floor Electric blueprint. How many duplex receptacles are found on this floor level? Exclude AFI receptacles and GFCI.

3

91
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What is the pitch in this image?

1/2

92
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What size of the circuit breaker can be installed on a line with 8 outlets 12 AWG wire?

20 Amps

93
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What is the slope in this drawing?

12:12