Spectra Precision DG613, Информационное руководство

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GRADE:
Grade establishes the slope of the pipe and is generally displayed in percent (%). A rise of 1ft (1 m) over
a run of 100-ft (100 m) equals 1.00%.
After setting Grade into the unit, the laser automatically slopes the beam to match the slope of the
pipe and maintain its slope if disturbed.
Note:
Some engineering plans list the pipe’s grade on a per foot or per meter basis. Before using your
Model DG813/613, transfer the engineered slope information into the Laser according to the Grade
Display Mode feature. Consult your salesman or service personnel for Grade Display Mode
configuration.
ELEVATION:
Depending on the application and jobsite conditions, the laser may be set to an elevation that matches
either the centerline of the pipe, at some distance above the invert of the pipe, or set over the top of
the pipe.
When setting the laser a surveyed manhole grade hub must be available to set the laser at the proper
elevation and the pipe will be installed at the correct elevation.
LINE:
Line insures proper direction of the pipe run between manholes according to the engineered plans.
Once Grade, Elevation, and Line are set, the laser will be projected at the proper grade, elevation, and
line for the pipe run. After a little practice, it normally takes about 5 minutes to set up the laser and
start laying pipe.
Laser beam
Pipe invert Always constant distance