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Prepare - 58<br />
Entry Pitch<br />
JT5 Operator’s <strong>Manual</strong><br />
Plan Bore Path<br />
Entry pitch is the slope of the drill frame compared with the slope of the ground. Determine entry pitch one<br />
of two ways:<br />
1. With Pitch Beacon<br />
• Lay pitch beacon on the ground and read<br />
pitch.<br />
• Lay pitch beacon on drill frame and read pitch.<br />
• Subtract ground pitch from drilling unit pitch.<br />
2. With Measurements<br />
• Measure from the ground to front end of drill<br />
frame (H1).<br />
• Measure from the ground to back end of frame<br />
(H2).<br />
• Subtract (H1) from (H2). Record this number.<br />
• Measure the distance between front and back<br />
points (C).<br />
• Divide (H2-H1) by (C), then multiply by 100.<br />
This is your pitch.<br />
IMPORTANT: A shallow entry pitch (A1) allows you<br />
to reach horizontal sooner and with less bending.<br />
Increasing entry pitch (A2) makes bore path longer<br />
and deeper.<br />
Minimum Setback<br />
Setback is the distance from the entry point to where<br />
pipe becomes horizontal (B1).<br />
NOTICE: If setback is too small (B2), you will<br />
exceed bend limits and damage the pipe.<br />
CMW
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