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Maintenance of Trackage


Quiz Questions

1.Which one of the following is the purpose of Ballast.
Holding the track in line and elevation
Providing uniform support for the track
Anchoring the track in place
Draining water falling onto the roadbed
Reducing heaving from frost
Reducing heaving from frost
All of the above
2. According to table 3-1 the maximum size for Ballast gradation is:
3-1/2
5-1/2
2-1/2
4-1/2
3.Figure 3-3 shows:
A complete finished track
An old track in the process of getting repaired
A track skeletonized to receive ballast
4.Most of the trackage has been built on the wood ties, but there are circumstances where use of concrete ties is warranted.
True
False
5.Wood ties have longer in-use life, geater strength, and better ability to hold rails permanently in line and to gage.
True
False
6.Standard spacing of the wood ties are:
22 to 24 ties per 39 feet of running track
33 to 34 ties per 39 feet of running track
11 to 15 ties per 39 feet of running track
7.Track is aligned at the same time it is surfaced. The "line" rail is always aligned and surfaced first, then the second rail. The line rail is the north or east rail.
True
False
8.Heaving of track in winter and spring months is generally an indication of poor drainage or poor ballast conditions, which must be corrected as soon as frost leaves the ground. Until the cause can be eliminated, heaving can be corrected temporarily by using shims to raise the rails on either side of the high spot, thus providing an easy grade..
True
False
9.Good drainage is the most important single factor in roadbed maintenance.
True
False
10.To provide maximum support for the track structure, subgrades should be kept as dry as possible.
True
False
11.For those portions of trackage structures, the most common form of preventive maintenance is periodic painting.
True
False
12.Sounding with a hammer is one of the best and least expensive methods of testing rail and is a practical way to inspect relatively short section of trackage, elevated crane trackage, and other trackage systems where ultrasonic testing is impractical.
True
False
13.Ultrasonic inspection is a nondestructive test method for revealing internal discontinuities in dense homogenous materials by means of acoustic waves of frequencies above the audible range.
True
False
14.Preventive maintenance Inspection is a visual, continuous routine (shop level) working-inspection.
True
False
15.Track geometry shall be investigated when any of the following conditions exist:

There are indications of abnormal wear on the railheads or on wheel flanges.
New rails are being installed or any portion of a rail is realigned.
Operating crane or railroad engine bind have difficulty in starting or have trouble with movement.
When a potential deficiency of trackage can be observed, heard, or felt.
There are indications of substructure settlement, failure, or other structural changes.

True
False