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Do not stare
into the laser beam or view directly with optical
instruments
Pipe Laser Setup
A pipe laser
can be setup a few different ways. The first is with the pipe
laser set in the pipe, it can set in a pipe
6” or
greater. It can also be used on a tripod or setup on a
trivet plate that goes in the manhole or setup on a
spreader
bar that will span
the manhole.
Setup - Align
the laser in the pipe or invert. Align the level vial located
behind the carrying handle so it is
in the center
position.
Angle errors of up to + or - 3 degrees have no significant
influence on the accuracy of the beam.
Calculating
Grades for a Pipe Laser
1.) Determine
the elevation difference between the two manholes
2.) Find the distance between the two manholes.
Usually plans
will show pipe slope expressed as per one foot of run (.0433).
5.) Divide
the elevation difference by the run
(5.35 divided by 123.33 =.0433
rise for one foot of pipe)
6.) If the
pipe laser you are using reads pipe slope in percent (that is
what the rise is at 100 feet) then multiply rise
for one foot of pipe times 100
to get percent of slope.
Pipe
Laser Grade Setting
Grade setting
turn laser on by pressing the power key. The
laser beam and the display will flash with the last entered
value. Use
the plus and minus keys to select the desired grade. Plus is
upward from the exit window.
When the desired
grade is displayed, press
the set key. The laser will then self-level to the entered
grade. When the laser beam remains on and the “HOR” is
constantly displayed on the LCD, the unit has been self leveled.
Line adjustment
is adjusted by either left or right arrow keys. It is advisable
to start with the line adjustment in
the center.
Pipe Laser Calibration
Calibration
needs to be checked and adjusted in an approved service center
and a qualified technician.
Calibration
should be done at lease once a year.
