Weight
C. Proper lining is determined by a method called stringlining.
D. Train traffic is unaffected by curved track alinement.
2
22. The sum of the proposed ordinates must equal:
A.
The number of stations measured.
B.
The sum of the measured ordinates.
C.
The number of doglegs.
D.
The number of easement curves.
2
23. Actual track throws should be kept as small as possible because:
A.
Large ones allow more room for error.
B.
They result in less rail wear.
C.
They increase riding comfort.
D.
Short throws are physically easier to make.
SITUATION
A portion of a spiraled curve is shown in the
diagram at the right. Note that the stations are
indicated by letters rather than by consecutive
numbers.
REQUIREMENT
Answer the next four multiple-choice
questions on the basis of the diagram.
2
24. If the ordinate at point C measures 1 1/2
inches, you would record it in your logbook
as:
A.
-12.
B.
12/24.
C.
12/3.
D.
+12.
24
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