Ongrade process overview, Ongrade operator’s manual – Ditch Witch OnGrade User Manual
Page 27
Advertising
Conduct OnGrade Bore - 26
OnGrade Operator’s Manual
OnGrade Process Overview
CMW
OnGrade Process Overview
1.
Determine start and end pits. See “Job Plans” on page 38.
2.
Select downhole tools for pilot bore. See “Downhole Tools” on page 42.
3.
Calibrate system. See “Calibrate Depth, Roll, and Pitch” on page 29.
4.
Position drilling unit so that drill string is at the desired pitch and depth for at least one and a half drill
pipes before entering the start pit.
5.
Set up the tripod and laser past the end pit, if possible.
1.
start pit
2.
laser plane
3.
grade pole and tracker
4.
end pit
5.
tripod and laser
IMPORTANT: Grade pole can receive laser plane (2) from up to 600’ (183 m) in low-wind
conditions.
e14om005t.eps
1
2
3
4
5
Advertising