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10
Checking Line and
Grade
107
Checking Line and Grade
Line and Grade should be checked after the first 7.5 to 15 m (25 to 50 ft) of pipe
is laid to ensure the pipe is at the proper grade and line.
A
Checking Line and Grade
1.
Set up a transit or automatic level as shown in the illustration.
2.
Take grade readings at the ends of the pipe using a grade rod.
Checking Line and Grade
C
B
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