Leica PIPER 100, Руководство пользователя

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51 Standard Set-up Procedures
4.6 Drop Manhole

The trivet pole or the complete trivet assembly is designed to attach directly
to a drop manhole t-bar assembly using a 5/8”-11 mount.
• Set the grade. Enter the required grade
for the pipe to be laid in the display of the
Piper.
• Set the elevation. Lower the pre-
assembled Drop Manhole Assembly and
Piper into the manhole until the T-bar is
approximately 150 to 300 mm (6 to 12
inches) above or below the pipe.
Ensure that the T-bar is level and perpendicular to the pipe. Tighten the wing nut
on the T-bar to secure it in the manhole. Move the Piper up or down on the
adjustable pole until the beam is approximately at the required elevation.
• Set the line. Adjust the beam so that it is in line with the next manhole.