EP 1110-1-17
16 Jul 99
TABLE 3-2.A
Required Blast Overpressure Protection Distance for Personnel for Detonating Ammunition for
the Purpose of Explosive Ordnance Disposal (Metric)
NEQ
(kg.)
Burial Depth in Meters
0
0.30
0.61
0.91
1.22
1.52
3.05
4.57
Distance Required in Meters
0.45
100
24.1
4.9
4.9
4.9
4.9
4.9
4.9
2.27
171
79.6
31.7
12.5
8.5
8.5
8.5
8.5
4.54
215
121
58.2
28.0
13.4
10.7
10.7
10.7
9.07
271
141
99.4
55.5
31.1
17.4
13.7
13.7
13.6
311
173
112
79.2
47.9
28.7
15.5
15.5
18.1
342
198
134
100
63.4
39.9
17.1
17.1
22.7
368
220
153
106
77.7
50.3
18.3
18.3
45.4
464
300
225
169
126
99.4
23.2
23.2
68.0
531
357
278
216
168
130
32.0
26.5
90.7
585
403
321
255
203
161
46.0
29.3
113
630
442
357
289
234
189
60.4
31.4
136
669
476
390
319
262
214
74.1
33.5
159
705
507
419
347
287
237
87.8
35.4
181
737
535
446
372
310
259
101
36.9
204
766
561
471
395
332
279
114
40.8
227
793
585
494
417
353
298
127
46.9
454
1000
767
671
586
513
449
230
110
680
1145
895
796
708
630
561
312
169
907
1260
998
897
807
725
652
383
225
1134
1357
1084
983
890
807
731
447
272
1361
1442
1161
1058
964
879
801
504
317
1814
1587
1291
1187
1091
1002
921
604
397
2268
1710
1401
1296
1198
1108
1025
693
468
2722
1817
1498
1392
1293
1201
1116
772
534
3175
1912
1585
1477
1378
1284
1198
844
595
3629
2000
1663
1556
1455
1361
1273
911
652
4082
2080
1736
1628
1526
1431
1342
973
705
4536
2154
1803
1695
1593
1497
1406
1031
756
NOTES FOR TABLE 3-2.A:
1. This table is derived from DA PAM 385-64.
2. This table provides distances for protection from blast overpressure only.
3. The 0 meter column distances are for above ground or open pit detonations and are based on the formula D = 130Q1/3 (D
in meters, Q in kg.). The columns 0.30 meter through 4.57 meter are for buried detonations and are generated from the
program EARTHEX. These distances assume the use of alluvium soil, a silty material which is the lightest soil type. They
also assume "base weather conditions," meaning low winds and high clouds. In lieu of this table, EARTHEX is
recommended for soil types other than alluvium (heavier soils may allow smaller distances), for atmospheric conditions
such as low stable clouds (which may increase distances), and for interpolation between table values. EARTHEX, an IBM
compatible program, is available from the U.S. Army Technical Center for Explosives Safety, ATTN: SMCAC-ES,
Savanna, IL 61074-9639.
3-7
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