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Construction Geomatics
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Flashcards
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Terms in this set (27)
What are the length ratios for a right triangle?
3:3:3
3:3:5
3:4:5
3:6:9
3:4:5
Using a right triangle, at the intersection point the slope distance, or the hypotenuse, is 310 feet long at a slope angle of 200 00' 00".
What is the horizontal distance in feet?
106.02
112.84
291.09
851.72
291.09
How many square feet in a one acre?
4840
9680
43560
87120
43560
What type of telescoping rod is often used with levels, transits, and total stations?
Alachua rod
Boston Rod
Pittsburgh rod
Philadelphia Rod
Philadephia rod
If a 1,000-ft road has a vertical rise of 15 ft what percent incline does the road have?
0.015%
0.150%
1.50%
15%
1.50%
Using trigonometric functions the Opposite Side divided by the Adjacent Side is equal to the ___________ of the angle.
Sin
Cos
Tan
Tan
The federal and state governments have established elevations of various inland points throughout the country. What elevation are these points in relationship to?
0' - 0"
10' - 0"
100' - 0"
1,000' - 0"
0' - 0"
You have completed the installation of a 30 inch diameter raw water pipeline that is 1,000 feet long. The specifications require hydrostatic testing of the pipeline which requires the pipeline to be filled with water and tested under pressure. How many gallons of water do you need to fill the pipe. 1 cubic foot of water equals 7.485 gallons.
23,547 gal.
36,792 gal.
58,868 gal.
71,569 gal.
36,792
How many feet are in a mile?
170
520
1760
5280
5280
A line perpendicular to a horizontal plane.
Plunge
Plumb
Plumber
Level
plumb
How many acres in a square mile?
40
160
320
640
640
What do contour lines that are spaced further apart indicate.
slight slope
steep slope
direction of erosion
direction of water runoff
slight slope
In leveling, a sight taken on the level rod to determine the elevation of any point.
Backsight (BS)
Back Bearing
Datum
Foresight (FS)
foresight(FS)
You are laying out the foundations for a rectangular structure that is 65'-0" long and 30'-0" wide. For squaring up the structure during layout what is the diagonal measurement in feet and inches.
71' - 7 1/16"
71' - 6 7/8"
47' - 6"
103' 3"
71'-7 1/16"
You are ready to lay out the grade points for the acoustical ceiling tile grid using a rotating lazer. When the rod is placed on the benchmark (BM) with and elevation of 660.00 the receiver indicates a reading of 5.55 feet. At what reading on the inverted rod will the receiver be placed so the ceiling grid will be set at 670.00.
4.45 feet
5.55 feet
10.00 feet
15.55 feet
4.45 feet
Assume that you are looking at the cross section of a concrete lined canal which is 20 feet wide at the bottom and the sides are set at a 1-1/2(H) : 1(V) slope from the bottom (horizontal) of the canal, the depth of the water flow is 12 feet. Using the cross sectional view, how many lineal feet of wetted cross section is there?
44.50
56.58
63.26
75.22
63.26
Using trigonometric functions the Opposite Side divided by the Hypotenuse is equal to the ___________ of the angle.
Sin
Cos
Tan
sin
A degree is a unit of circular measurement equal to _________ of the circle.
1/60th
1/180th
1/240th
1/360th
1/360th
Assume that you are looking at the cross section of a concrete lined canal which is 20 feet wide at the bottom and the sides are set at a 33o 41' 24" slope from the bottom (horizontal) of the canal, the depth of the water flow is 12 feet. Using the cross sectional view, how many lineal feet of wetted cross section is there?
216 sf
240 sf
348 sf
456 sf
456 sf
_________ is the clockwise or counterclockwise angle measured off of North or South that is used to describe the direction of the line.
Azimuth
Bearing
Deflection Angle
Horizontal Axis
bearing
Which of the following instruments does not measure vertical angles?
Robotic Total Station
Transit
Theodolite
Builder's Level
builder's level
360 feet of 24 inch diameter pipe is being laid on a slope at a slope angle of 33o 00' 00". What is the drop in elevation from the high point to the low point.
156.78 feet
176.06
196.07 feet
206.56 feet
196.07
In construction, the EDM instrument has radically changed the manner in which surveying is used on the jobsite. EDM is an acronym for:
-Electronic Dynamic Measuring
-Effective Distance Measuring
-Electronic Distance Measuring
-Efficient Distant Measuring
electronic distance measuring
You are required to establish grade for the bottom of a footing (BOF) that is 1 foot thick. The elevation at the top of the footing (TOF) is 98.00'. The elevation of the existing grade is 102.33'. The backsight (BS) of the instrument on the benchmark (BM) of 100.00' is 6.78'. What is the correct reading on the rod at the bottom of the footing?
2.00
4.33
8.78
9.78
9.78
The size of the stake often indicates its purpose. Typically a 1-1/2 inch by 1-1/2 inch piece of wood that can be obtained in lengths of 6", 12', 18" or 24". A _________ is generally used to mark a specific point such as center line points, control points, radius points, blue tops, etc.
hub
lath
stake
None of the above are correct.
hub
You have been tasked to determine the quantity of sand stored onsite in a stockpile for the concrete batch plant. The stockpile has a base dimension of 60 feet x 120 feet. The angle of repose for the sand on all four sides of the stockpile is 32o 00' 00". What is the volume of the stockpile.
2500 CY
5000 CY
7500 CY
10000 CY
2500 cy
Assume you are placing asphalt on a driveway that is 15 feet wide and 8 inches thick. The plans show the drive is 200 feet horizontally. The driveway has an incline of 10o 00' 00". What is the actual sloped length of the driveway?
196.96
203.085
35.2653
302.998
203.085
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