Download PIPER 100/200 User manual

3.2
Open Trench (Transit)

In the open trench a transit is used to align the laser beam to the next
manhole.
•
B
•
A
C
D
Set the grade. Enter the required
grade for the pipe to be laid in the
display of the Piper.
Set the Piper on the centerline
of the pipe to be laid. Locate the
line for the laser beam.
a) Locate Point A. Place the transit so that it is behind the Piper and in line
with the centerline of the pipe to be laid.
b) Locate Point B. Look through the transit and lock it on-line with the next
manhole point.
c) Locate Point C. Tilt the transit down to see the Piper. Move the Piper until
the pivot point on the top of the Piper is in line with the centerline of the
pipe to be laid.
• Set the elevation. Move the Piper up or down on the (optional) trivet
until the required height is set. (Choose the most convenient method for
determining the cut-to-invert distance.)
Standard Set-up Procedures
Piper 100/200
3-3