Civil engineer guide to fighting positions, shelters, obstacles
Civil engineer guide to fighting positions, shelters, obstacles
Civil engineer guide to fighting positions, shelters, obstacles
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AFH 10-222 Volume 14 1 August 2008 34<br />
Table 2.4. Center-<strong>to</strong>-Center Spacing for Wood Stringers and Soil Cover<br />
<strong>to</strong> Defeat Contact Bursts.<br />
Nominal<br />
Stringer<br />
Size<br />
(inches)<br />
Depth of<br />
Soil, feet<br />
2x4 2 (0.6)<br />
3 (0.9)<br />
4 (1.2)<br />
2x6 2 (0.6)<br />
3 (0.9)<br />
4 (1.2)<br />
4x4 2 (0.6)<br />
3 (0.9)<br />
4 (1.2)<br />
4x8 1.5 (0.5)<br />
2 (0.6)<br />
3 (0.9)<br />
4x8 4.0 (1.2)<br />
5.0 (1.5)<br />
6.0 (1.8)<br />
6x6 4.0 (1.2)<br />
5.0 (1.5)<br />
6.0 (1.8)<br />
6x8 4.0 (1.2)<br />
5.0 (1.5)<br />
8x8 4.0 (1.2)<br />
5.0 (1.5)<br />
4x8 4.0 (1.2)<br />
5.0 (1.5)<br />
6.0 (1.8)<br />
7.0 (2.1)<br />
6x6 5.0 (1.5)<br />
6.0 (1.8)<br />
7.0 (2.1)<br />
6x8 4.0 (1.2)<br />
5.0 (1.5)<br />
6.0 (1.8)<br />
8x8 4.0 (1.2)<br />
5.0 (1.5)<br />
6.0 (1.8)<br />
Span Length, feet (meters)<br />
2 (0.6) 4 (1.2) 6 (1.8) 8 (2.4) 10 (3.0)<br />
Center <strong>to</strong> Center Stringer Spacing, inches (centimeters)<br />
(meters) 82-mm Contact Burst<br />
3 (7.6)<br />
18 (46)<br />
18 (46)<br />
4 (10)<br />
18 (46)<br />
18 (46)<br />
7 (18)<br />
18 (46)<br />
18 (46)<br />
4 (10)<br />
14 (36)<br />
18 (46)<br />
3.5 (9)<br />
12 (30)<br />
18 (46)<br />
--<br />
14 (36)<br />
18 (46)<br />
5.5 (14)<br />
18 (46)<br />
7.5 (19)<br />
18 (46)<br />
--<br />
6 (15)<br />
17 (43)<br />
18 (46)<br />
7 (18)<br />
18 (46)<br />
18 (46)<br />
--<br />
10 (25)<br />
18 (46)<br />
--<br />
14 (36)<br />
18 (46)<br />
4 (10)<br />
12 (30)<br />
14 (36)<br />
7 (18)<br />
18 (46)<br />
18 (46)<br />
10 (25)<br />
18 (46)<br />
18 (46)<br />
5 (13)<br />
18 (46)<br />
18 (46)<br />
4 (10)<br />
8 (20)<br />
7 (18)<br />
8 (20)<br />
16 (41)<br />
18 (46)<br />
10 (25)<br />
18 (46)<br />
18 (46)<br />
7 (18)<br />
18 (46)<br />
18 (46)<br />
4 (10)<br />
5 (13)<br />
4 (10)<br />
8 (20)<br />
12 (30)<br />
11 (28)<br />
9 (22)<br />
12 (30)<br />
10 (25)<br />
8 (20)<br />
18 (46)<br />
18 (46)<br />
120- and 122-mm Contact Burst<br />
4 (10)<br />
12 (30)<br />
18 (46)<br />
--<br />
14 (36)<br />
18 (46)<br />
6 (15)<br />
18 (46)<br />
9 (23)<br />
18 (46)<br />
--<br />
6 (15)<br />
16 (41)<br />
18 (46)<br />
8 (20)<br />
18 (46)<br />
18 (46)<br />
--<br />
11 (28)<br />
18 (46)<br />
--<br />
14 (36)<br />
18 (46)<br />
5 (13)<br />
12 (30)<br />
18 (46)<br />
5.5 (14)<br />
13 (33)<br />
18 (46)<br />
8 (20)<br />
18 (46)<br />
11 (28)<br />
18 (46)<br />
152-mm Contact Burst<br />
--<br />
7 (18)<br />
14 (36)<br />
18 (46)<br />
8 (20)<br />
15 (38)<br />
18 (46)<br />
--<br />
12 (30)<br />
18 (46)<br />
--<br />
16 (41)<br />
18 (46)<br />
5 (13)<br />
11 (28)<br />
16 (41)<br />
6 (15)<br />
12 (30)<br />
16 (41)<br />
9 (23)<br />
18 (46)<br />
12 (30)<br />
18 (46)<br />
--<br />
7 (18)<br />
12 (30)<br />
15 (38)<br />
8 (20)<br />
12 (30)<br />
15 (38)<br />
--<br />
12 (30)<br />
18 (46)<br />
--<br />
17 (43)<br />
18 (46)<br />
3 (8)<br />
3 (8)<br />
3 (8)<br />
6 (15)<br />
8 (20)<br />
7 (18)<br />
7 (18)<br />
8 (20)<br />
7 (18)<br />
8 (20)<br />
18 (46)<br />
18 (46)<br />
6 (15)<br />
10 (25)<br />
12 (30)<br />
6 (15)<br />
10 (25)<br />
12 (30)<br />
10 (25)<br />
18 (46)<br />
13 (33)<br />
18 (46)<br />
3.5 (9)<br />
7 (18)<br />
10 (25)<br />
11 (28)<br />
7 (18)<br />
10 (25)<br />
11 (28)<br />
6 (15)<br />
12 (30)<br />
17 (43)<br />
8 (20)<br />
16 (41)<br />
18 (46)
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