LESSON 5
PRACTICE EXERCISE
ANSWER KEY AND FEEDBACK
Item
Correct Answer and Feedback
1.
C
An enclosed waterway placed through an embankment or fill.
Culvert - A culvert... (page 5-1)
2.
A
Invert
Invert - Inside bottom... (page 5-2)
3.
A
Length of the culvert.
The flow or discharge... (page 5-2)
4.
C
It is stronger and therefore requires less cover.
First, it is stronger... (page 5-4)
5.
A
8
Figure 5-6. 8-inch spacing between pipes (page 5-8)
6.
B
12
Table 5-1 (page 5-9)
7.
Before compacting the backfill, CMP of 48 inches must be internally strutted.
Before compacting the backfill... (page 5-11)
8.
B
12
(Learning Event 4)
9.
The equation for computing the pipe diameter of a roadway culvert is Dmax = 2/3Fmin.
For an airfield culvert, the military engineer must use tables of aircraft loads, pipe gauges
and cover requirements to determine the pipe diameter.
Part G... (page 5-21)
EN5465
5-26
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