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Flashcards generated from construction estimation lecture notes.
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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
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
What is the total length of the rafters (both sides), if X = 6 feet and overhang is 2 feet?
27.32’
If the slope is 4:12, what is x?
3’ 4”
How many roofing squares are required for the roof shown in the image?
11
The job requires 28 construction squares for siding. How many square feet of siding do you need to buy?
2800
How many cubic feet is the total volume of the house below?
9600 cubic feet
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
How many cubic yards of concrete is required for a 4” slab with a circumference of 25 feet?
3/4 cubic yard(s)
How many linear feet of gutter do you need for a gutter shown in the illustration?
157
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
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
Refer to the 1st floor Electric blueprint. How many three-way switches are needed?
1
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
How long is the hypotenuse?
11.18’
Who should you contact if you want to change the location of a driveway on a newly purchased plot of land?
Zoning department
How many rolls of #15 felt paper are required for the roof shown in the image not accounting for overlap?
3
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
Refer to the 2nd floor Electric blueprint. How many ceiling fans are depicted?
3
Which of the following is a low slope roof system?
Modified bitumen
Please refer to the house plan. How many square feet does the patio cover (excluding sidewalk)?
460 sq ft
Refer to the 1st-floor Electric blueprint. How many ceiling fans are depicted?
3
The load area of a skylight is equal to the .
All of the above
What is the term used to describe a vertical wall that has been properly installed?
Plumb
How many kWh will be consumed by a 500w lightbulb running for 3 hours?
1.5 kWh
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.
Refer to the 1st floor Electric blueprint. How many GFCI receptacles are found on this floor level?
11
Refer to the 1st-floor Electric blueprint. How many single-pole switches are needed? Exclude any special 3-way switches.
12
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
How many cubic yards of concrete is required for a 4” slab with a diameter of 15 feet?
2 1/2 cubic yards
Which plan from a set of blueprints will give the true measurement of a rake?
Elevation plan
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
Having employees, a general contractor must post conspicuously, in a location frequented by employees:
The name of the current workers compensation insurance carrier
Refer to the 1st floor Electric blueprint. How many duplex receptacles are found on this floor level? Exclude GFCIs.
6
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
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”
How many square feet is found in a single roofing square of composition shingles?
100 square feet
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
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
Refer to the electrical blueprint. The 2 story house has a total of ___ smoke detectors.
5
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
After designing the plan with an architect, what is the first step?
Have the contractor check the plan
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.
Refer to the 2nd floor Electric blueprint. How many AFI receptacles are found on this floor level? Exclude standard duplex and GFCIs.
14
Refer to the 2nd floor Electric blueprint. How many single-pole switches are needed?
16
How many 9” x 9” carpet tiles do you need for a 10’ x 10’ room with no pattern and no border?
178
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
Who is finally responsible for an approved set of plans?
Contractor
A 1/6 roof pitch is equal to a slope?
4:12
How many 8” x 8” x 16” blocks are required for a wall 8 feet high and 60 feet long?
540
What size of the circuit breaker can be installed on a line with 7 outlets 14 AWG wire?
15 Amp
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
What is a permanent or well-known elevation reference point?
Benchmark
What is the total drop for a 120’ pipe with a 2% slope?
2' 5”
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
How many cubic yards of concrete are required for the footing shown, if it is 75 feet long?
2 1/2 cubic yards
How is leveling performed?
Establish a benchmark and use a level
What is the area of the circle if the diameter is 20 feet?
314 sq. ft.
Refer to the house plan. How many square feet is the foundation slab?
1844 sq ft
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
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
The image displayed in the figure is the construction blueprint symbol for .
A supply air register
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
How many cubic yards of concrete do you need for a 4” slab with an area of 20’ x 40’?
10 cu yds
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
If the pitch is 1/6, then what is x?
3’ 4”
How do you determine the amount of roof vents needed on a project?
According to roof area in square feet
How many square feet are in 12 roofing squares?
1200
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
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
The roof pitch is 6/24, what is the rise given that the run is 17 feet?
8.5’
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
The image displayed in the figure is the construction blueprint symbol for a .
Charging valve
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
How many board feet are in a 2” x 4” stud that is 8’ feet long?
5.33 board feet
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
How do you determine the number of trusses required on a project?
Divide the length of a trussed area by the spacing
How many bundles of 30-year asphalt shingles are in a square of roofing?
3 bundles
Refer to the electrical blueprint. The 2 story house has a total of ___ Carbon Monoxide detectors.
2
One Square of roof is equal to;
100 square feet
How many cubic yards of concrete is required for a 4” slab with the radius of 10 feet?
3.87 cubic yards
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
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
The slope of a roof is the sum of the divided by __?
Rise Run
The minimum distance that local code requires a building to be from the street is called a:
Setback
How many roofing squares are in the roof measuring 45’ by 50’?
22.5
What is the square footage of a gable 12 ft. wide by 6 ft. high?
36 sq. ft.
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
The image displayed in figure #5 is the construction blueprint symbol for a .
Room Thermostat
Refer to the 2nd floor Electric blueprint. How many duplex receptacles are found on this floor level? Exclude AFI receptacles and GFCI.
3
What is the pitch in this image?
1/2
What size of the circuit breaker can be installed on a line with 8 outlets 12 AWG wire?
20 Amps
What is the slope in this drawing?
12:12