Ditch Witch JT920, Manual

Page: 157 / 169

JT920/JT920L - APPENDIX
157
B. ENTRY PITCH, SETBACK, AND DEPTH
JT920/JT920L - APPENDIX
157
B. ENTRY PITCH, SETBACK, AND DEPTH
JT920L Power Pipe Drill Pipe
EA SB d D
-18 25 ft 0 in (7.26 m) 1 ft 4 in (.40 m) 2 ft 11 in (.88 m)
-20 26 ft 11 in (8.19 m) 1 ft 5 in (.44 m) 3 ft 5 in (1.04 m)
-22 28 ft 9 in (8.76 m) 1 ft 7 in (.49 m) 3 ft 11 in (1.20 m)
-24 30 ft 7 in (9.31 m) 1 ft 9 in (.53 m) 4 ft 6 in (1.37 m)
-26 32 ft 4 in (9.86 m) 1 ft 10 in (.57 m) 5 ft 1 in (1.55 m)
-28 34 ft 1 in (10.40 m) 2 ft 0 in (.61 m) 5 ft 8 in (1.74 m)
-30 35 ft 10 in (10.92 m) 2 ft 2 in (.65 m) 6 ft 4 in (1.94 m)
Based on:
1. 100’ (30.5 m) minimum bend radius
2. L = beacon housing, EZ-Connect, and transition sub, and 1/3 of first
drill pipe (totalling 7’ 5” [2.26 m]) in the ground before steering
JT920L Power Pipe Drill Pipe
EA SB d D
-18 25 ft 0 in (7.26 m) 1 ft 4 in (.40 m) 2 ft 11 in (.88 m)
-20 26 ft 11 in (8.19 m) 1 ft 5 in (.44 m) 3 ft 5 in (1.04 m)
-22 28 ft 9 in (8.76 m) 1 ft 7 in (.49 m) 3 ft 11 in (1.20 m)
-24 30 ft 7 in (9.31 m) 1 ft 9 in (.53 m) 4 ft 6 in (1.37 m)
-26 32 ft 4 in (9.86 m) 1 ft 10 in (.57 m) 5 ft 1 in (1.55 m)
-28 34 ft 1 in (10.40 m) 2 ft 0 in (.61 m) 5 ft 8 in (1.74 m)
-30 35 ft 10 in (10.92 m) 2 ft 2 in (.65 m) 6 ft 4 in (1.94 m)
Based on:
1. 100’ (30.5 m) minimum bend radius
2. L = beacon housing, EZ-Connect, and transition sub, and 1/3 of first
drill pipe (totalling 7’ 5” [2.26 m]) in the ground before steering