Ditch Witch JT40, Operator'S Manual

Page: 100 / 253

JT40/JT40 All Terrain Operator’s Manual
Prepare - 99
Plan Bore Path
AT40 Pipe
Minimum depth (D) Entry pitch (A) Setback (B) Depth to begin steering (S)
4’ 3” (1.30 m) 18% / 10.0° 38’ 7” (11.76 m) 1’ 8” (0.51 m)
5’ 4” (1.63 m) 21% / 11.6° 43’ 3” (13.18 m) 1’ 11” (0.58 m)
6’ 8” (2.03 m) 23% / 13.2° 47’ 10” (14.58 m) 2’ 2” (0.66 m)
7’ 11”(2.41 m) 26% / 14.8° 52’ 4” (15.95 m) 2’ 5” (0.74 m)
9’ 7” (2.92 m) 29% / 16.4° 56’ 10” (17.32 m) 2’ 8” (0.81 m)
11’ 2” (3.40 m) 32% / 18.0° 61’ 4” (18.69 m) 2’ 11” (0.89 m)
IMPORTANT: Numbers in table based on 170’ (51.8 m) minimum bend radius and beacon housing
and 1/3 of first drill pipe (L, totaling 9’ 2” [2.79 m]) in the ground before steering.