Question 1

A 1 cubic meter (m³) highway embankment will be constructed from soil compacted to a dry unit weight of 17.5 kN/m³. Soil will be trucked to the site from a borrow pit. The natural water content of the soil in the borrow pit is 5% and the bulk unit weight is 17 kN/m³. What is the volume of soil needed from the borrow pit?

A)12.22 m³
B)1.08 m³
C)3.57 m³
D)10.00 m³

1.08 m³

Accepted Answer

The approximate volume of soil needed from the borrow pit is 1.08 m³. Solution: Step 1: Calculate the dry unit weight of the borrow pit soil ?_d = ?/ (1+w) Where ? = 17 kN/m³ and w = 0.05 ?_d = 17 kN/m³/ (1+0.05)= 16.2 kN/m³ Step 2: Calculate volume of borrow pit soil required (?_d) compacted soil / (?_d) borrow pit soil = 17.5 / 16.2 = 1.08 m³

Question 2

What is the approximate volume (in cubic yards [yd³]) of the material to be excavated between two cross-sections that are 100 feet apart? Assume that the area of the first cross-section is 216 square feet ( ft²) and the area of the second cross-section is 318 ft².

A)10 yd³
B)989 yd³
C)12,640 yd³
D)26,700 yd³

989 yd³

Accepted Answer

The approximate volume of the material that will need to be excavated between the two cross-sections is 989 yd³. Solution: Use the volume equation averaged over the two cross-sections v = L (A₁ + A₂)/2 Given, L = length = 100 ft A₁ = 216 sq ft and A₂ = 318 sq ft V = (100 ft) (216 ft² + 318 ft²) / 2 = 26,700 ft³ = 26,700 ft³ x (1 cubic yard/ 27 ft³) = 989 yd³ (approximate)

Question 3

At which of the following points on a slope is a stake positioned?&#10;A)Limits of each side of the base&#10;B)Elevation of the ground and base&#10;C)Along the sides of the slope&#10;D)All of the above

Accepted Answer

Stakes are positioned at each of the points listed. Slope stakes are placed to indicate the limits of earthwork to delineate the edge of a cut or the toe of a fill. The station number, horizontal distance to the right or left of the centerline, and the vertical distance from the ground to the elevation of the top of fill or excavation bottom is marked on each slope stake.

Question 4

Which of the following elements are typically included on the Erosion and Sediment Control Plan of a construction site?&#10;A)Site drawing with existing and proposed conditions&#10;B)Standard details of each erosion and sediment control best management plan (BMP) proposed for use&#10;C)BMP inspection and maintenance schedule&#10;D)All of the above.

Accepted Answer

All of the elements listed are typically included on an Erosion and Sediment Control Plan. Local ordinances set the requirements for controlling stormwater runoff from construction sites that may cause soil erosion and sedimentation in downstream waterways. Local ordinances are required to be developed under the U.S. Environmental Protection Agency's National Pollutant Discharge Elimination System program.

Question 5

What is the total length of an alignment that begins at Sta 60+25.00 and ends at Sta 180+16.22?&#10;A)6,250.00 feet&#10;B)11,991.22 stations&#10;C)11,991.22 feet&#10;D)18,016.22 stations

Accepted Answer

The total length of an alignment that begins at Sta 60+25.00 and ends at Sta 180+16.22 is 11,991.22 feet.
Solution:
End of the project=180+16.22=18016.22 ft
Beginning of the project=60+25.00=6025.00 ft
Total length of project = 11,991.22 ft

Question 6

What is the bearing of a 175 &#176;azimuth line when the direction of zero azimuth is north?&#10;A)S 5&#176; E&#10;B)S 85&#176; E&#10;C)S 5&#176; W&#10;D)S 85&#176; W

Accepted Answer

When the direction of zero azimuth is north, the bearing of a 175° azimuth line is S 5° E.
Solution: The bearing angle is 180° - 175° = S 5° E.

Question 7

What does 17.1678&#176; equate to when described in degrees, minutes, and seconds (DMS)?&#10;A)17&#176;06'08&#34;&#10;B)17&#176;10'04&#34;&#10;C)17&#176;16'78&#34;&#10;D)None of the above

Accepted Answer

17.1678° is equal to17°10'04" when described in degrees, minutes and seconds.
Solution: Given, 1 minute = 1/60 of a degree (1° = 60 minutes),
1 second = 1/60 of a minute (1 minute = 60 seconds), and
1° = (60 minutes per degree) (60 seconds per minute) = 3600 seconds
Step 1: Convert the decimal part of the angle reading (0.1678°) to minutes:
(0.1678°)(60 minutes per degree) = 10.068 minutes
Step 2: Convert the decimal part of 10.068 minutes to seconds:
(0.068 minutes) (60 seconds per minute) = 4 seconds
Step 3: Combine to obtain DMS: 17°10'04"

Question 8

Of the following, which is an important consideration when recording staking field notes?&#10;A)Notes and drawings are legible&#10;B)Information recorded is complete&#10;C)Information recorded is accurate&#10;D)All of the above

Accepted Answer

Legibility, completeness, and accuracy are all important considerations when recording field notes.
If the angles, distances, and field note entries are not legible and correct, the stakes may have to be reset. Resetting stakes will require additional time, increase the cost of the project, and possibly result in delays and/or penalties. Taking the time to record complete, accurate, and legible field notes is definitely worth your time.

Question 9

For which of the following project site conditions would it be appropriate to supplement traditional optical surveying methods with GPS land surveying technology when staking?&#10;A)Existing parking lot extension&#10;B)Residential housing unit on a former agricultural tract&#10;C)Sewer alignment through a unimproved easement in hilly terrain&#10;D)None of the above

Accepted Answer

It would be appropriate to supplement traditional optical surveying methods with GPS land surveying technology when staking a sewer alignment through an unimproved easement in hilly terrain. GPS land surveying technology is beneficial for use on projects where lines of sight needed for traditional optical surveying are obstructed and/or access along an alignment is difficult or dangerous. Recent advances in GPS technologies have resulted in lower equipment costs and increased crew productivity rates.

Question 10

What is the number 124.632612 when shown in five significant figures?&#10;A)0.63261&#10;B)124.63&#10;C)124.63212&#10;D)All of the above

Accepted Answer

When shown in five significant figures, the number 124.632612 appears as 124.63. The number of significant figures is different than number of decimal places. The number of significant figures in any value consists of the known digits and one estimated digit.

Question 11

Which of the following order of measurements provides the most accurate measurements in surveying?&#10;A)Lower order&#10;B)First order&#10;C)Second order&#10;D)Third order

Accepted Answer

The answer of Which of the following order of measurements...

Deck 3: Earthworks