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Note: The depths given in the following table are for 3 m (10 ft) of combined drill head and pipe. As you steer up, the
pitch of the steered section will change and can be monitored with the receiver. Use the following table to identify how
many lengths of pipe will be necessary to insert and steer to the beginning point and help you choose an entry point.
Pitch
Depth Change per 10 feet
1%
2%
3%
4%
5%
6%
7%
8%
9%
10%
11%
12%
13%
14%
15%
16%
17%
18%
19%
20%
21%
22%
23%
24%
25%
All measurements are approximate and will vary depending on soil conditions.
Note: These values and more can be found in the Driller's Handbook & Daily Log by Digital Control Incorporated.
2 cm (1 inch)
5 cm (2 inches)
10 cm (4 inches)
13 cm (5 inches)
15 cm (6 inches)
18 cm (7 inches)
20 cm (8 inches)
25 cm (10 inches)
28 cm (11 inches)
30 cm (12 inches)
33 cm (13 inches)
36 cm (14 inches)
39 cm (15 inches)
43 cm (17 inches)
46 cm (18 inches)
48 cm (19 inches)
51 cm (20 inches)
53 cm (21 inches)
56 cm (22 inches)
61 cm (24 inches)
64 cm (25 inches)
66 cm (26 inches)
69 cm (27 inches)
71 cm (28 inches)
74 cm (29 inches)
Pitch
Depth Change per 10 feet
26%
27%
28%
29%
30%
31%
32%
33%
34%
35%
36%
37%
38%
39%
40%
41%
42%
43%
44%
45%
46%
47%
48%
49%
50%
36
76 cm (30 inches)
79 cm (31 inches)
81 cm (32 inches)
84 cm (33 inches)
86 cm (34 inches)
91 cm (36 inches)
94 cm (37 inches)
97 cm (38 inches)
99 cm (39 inches)
102 cm (40 inches)
104 cm (41 inches)
107 cm (42 inches)
109 cm (43 inches)
112 cm (44 inches)
114 cm (45 inches)
117 cm (46 inches)
117 cm (46 inches)
119 cm (47 inches)
122 cm (48 inches)
124 cm (49 inches)
127 cm (50 inches)
130 cm (51 inches)
133 cm (52 inches)
135 cm (53 inches)
137 cm (54 inches)
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