| 1. |
Bridge surveying is necessary to locate a site, obtain information for design, and furnish lines and grades for construction. |
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True |
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False |
| 2. |
The surveyor determines the length of the bridge crossing to estimate the materials required for construction. |
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True |
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False |
| 3. |
The surveyor draws sketches of approach roads to be constructed on overlays but does not include them in the reconnaissance report. |
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True |
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False |
| 4. |
The surveyor reports on the character and shape of the riverbanks which includes __________________________________. |
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Amount and type of vegetation |
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Slope, height, and composition of the banks |
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Pertinent dimensions of any natural dikes |
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None of the above |
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All of the above |
| 5. |
The surveyor determines stream velocity by timing a floating object over a measured course. |
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True |
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False |
| 6. |
______________levels are determined by noting drift and marks on vegetation or piers, questioning local inhabitants, and consulting tide tables and local flood records. |
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Low-water |
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High-water |
| 7. |
The profile interval is not measured by a tape or cable stretched horizontally across the stream or gap or by the instrument-stadia method. |
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True |
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False |
| 8. |
For floating bridges, profiles are required only for setting trestles near the shores. |
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True |
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False |
| 9. |
The surveyor does not estimates and records quantities of local materials such as standing timber, sand and gravel beds, and available cement, water, and lumber. |
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True |
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False |
| 10. |
The _________________ of each sounding is referenced to control stations onshore. |
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Location |
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Profile |
| 11. |
________________investigations are made by borings, test pits, trenches, and field tests. |
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Earth |
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Subsurface |
| 12. |
Construction plans show whether the abutments are________________________. |
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Pile-bent |
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Crib-bent |
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Both |
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None |
| 13. |
The distance between abutments must be within steel fabrication limits, especially for prefabricated sections. |
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True |
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False |
| 14. |
Figure 5-2 illustrates ____________________. |
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Staking an abutment |
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Taking soundings |
| 15. |
The procedure for laying out wing walls is not merely an extension of the layout of an abutment. |
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True |
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False |
| 16. |
Figure 5-4 illustrates ___________________. |
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Locating Piers |
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Staking wing walls |
| 17. |
The surveyor positions piles, records pile driving data, and marks piles for cutoff as specified by the construction plans.
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True |
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False |
| 18. |
The ____________________ determines the distance of the template from the shore, either by angle measuring or taping. |
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Structural engineer |
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Surveyor |
| 19. |
Figure 5-5 illustrates _______________________. |
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Positioning piles |
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Locating piles |
| 20. |
As in the discussion about piers, for well proportioned triangles, the length of the baselines should equal at least one half CE in figure 5-4.
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True |
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False |
| 21. |
The surveyor need not check abutment elevations and in the case of concrete establish lines for setting forms. |
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True |
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False |
| 22. |
If a floating bridge is to be constructed, the surveyor determines the character of the river bottom so the holding power of anchors can be estimated. |
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True |
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False |
| 23. |
Tentative bridge sites are selected by reconnaissance and the more promising ones are reconnoitered in detail. |
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True |
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False |
| 24. |
The surveyor does not select tentative abutment positions and measures the size and location of any usable abutments or piers for possible use in the proposed construction. |
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True |
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False |
| 25. |
The ______________ specifies the distance from the centerline and intervals between soundings. |
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Design engineer |
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Surveyor |
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