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Planning and Processing Surveys for Civil Works Projects


Quiz Questions

1.Funding limits will often dictate the scope of work, often restricting the data density that can be collected and resultant data quality.
True
False
2. Over-capability is one factor (e.g. using multibeam-equipped vessel with a 5-man crew to run single-line beach profiles) that could not be performed efficiently by a 2-man topographic survey team.
True
False
3.When critical project milestones are dependent on site plan data, project engineers should expect a rapid response to a data request including expedited field-finish deliverables.
True
False
4.A-E contracting task orders can take from ______________ to process, depending on the command. Not all districts maintain A-E labor-hour contracts that allow immediate response.
2 to 6 weeks
2 to 8 weeks
1 to 6 weeks
5.Small-scope survey projects always cost __________ per unit than large efforts, due to mobilization and general overhead costs, among other factors.
More
Less
6.Survey crews with updated technology and equipment is another indicator of performance capability and also a good productivity indicator.
True
False
7.The general classifications for survey conditions are: water depth, channel width, fresh or salt water, water current strength, turbidity, wave conditions, and weather.
True
False
8.Turbidity and other water conditions have no effect on the type and make of the echo sounder to be used.
True
False
9.A general planning consideration includes:
Project funding
Response time
Project scope and location
All of the above
10.Larger vessels (greater than 26-ft) are generally more effective (and safer) on open ocean entrance projects and their daily operating cost is ___________.
High
Low
11.Smaller, trailerable boats (less than 26-ft) are __________ on inland navigation projects and coastal harbors and entrances.
Less efficient
More efficient
12.Generally a __________________ vessel with 150-250 HP works best in most conditions.
23-ft to 33-ft
22-ft to 30-ft
23-ft to 30-ft
13.______________ plays a major role in the vessel design.
Weather
Vessel material
14.When using a single beam survey system, the lines should run _______________ to contours.
Perpendicular
Parallel
15.MLLW is abbreviated as ______________________.
Mean Lower Low Water
Mean Low Water
16.______________________ is the number of soundings per unit of area.
Data redundancy
Data density
17.Figure 6-5 represents ________________.
HYPACK MAX planned survey lines covering channel and adjacent turning basin
HYPACK MAX Smart Corners generated planned survey lines covering irregular channel alignments
18.Acoustic multibeam sonar systems provide full-bottom coverage from a ____________ transducer.
Single acoustic
Dual acoustic
19._______________ is a mode when the system will start logging data when the vessel reaches a pre-set distance from the navigation channel toes.
AUTO MARK
AUTO BREAK
20.RECON is a mode where the operator can remove any pair of distances used for the solution of the vessel’s position.
True
False
21.A hydrographic survey consists of rows of soundings usually taken perpendicular to the centerline of the channel.
True
False
22.A plot is usually begun by placing the channel lines on a blank sheet or computer screen in an orientation for ___________________ sheet coverage.
Minimum
Maximum
23.Coordinate grids should be plotted on each sheet so as not to exceed _____________ spacing at final chart scale.
3-in
5-in
7-in