DISTANCES FOR STORAGE OF EXPLOSIVES
| |||||
---|---|---|---|---|---|
Explosivesg
|
Distance in feet when storage is barricadedb, c, d, e
| ||||
Poundsa over
|
Pounds not over
|
From inhabited buildings
|
From passenger railways
|
From public highways
|
Separation of magazinesg
|
2
|
5
|
70
|
30
|
30
|
6
|
5
|
10
|
90
|
35
|
35
|
8
|
10
|
20
|
110
|
45
|
45
|
10
|
20
|
30
|
125
|
50
|
50
|
11
|
30
|
40
|
140
|
55
|
55
|
12
|
40
|
50
|
150
|
60
|
60
|
14
|
50
|
75
|
170
|
70
|
70
|
15
|
75
|
100
|
190
|
75
|
75
|
16
|
100
|
125
|
200
|
80
|
80
|
18
|
125
|
150
|
215
|
85
|
85
|
19
|
150
|
200
|
235
|
95
|
95
|
21
|
200
|
250
|
255
|
105
|
105
|
23
|
250
|
300
|
270
|
110
|
110
|
24
|
300
|
400
|
295
|
120
|
120
|
27
|
400
|
500
|
320
|
130
|
130
|
29
|
500
|
600
|
340
|
135
|
135
|
31
|
600
|
700
|
355
|
145
|
145
|
32
|
700
|
800
|
375
|
150
|
150
|
33
|
800
|
900
|
390
|
155
|
155
|
35
|
900
|
1,000
|
400
|
160
|
160
|
36
|
1,000
|
1,200
|
425
|
170
|
165
|
39
|
1,200
|
1,400
|
450
|
180
|
170
|
41
|
1,400
|
1,600
|
470
|
190
|
175
|
43
|
1,600
|
1,800
|
490
|
195
|
180
|
44
|
1,800
|
2,000
|
505
|
205
|
185
|
45
|
2,000
|
2,500
|
545
|
220
|
190
|
49
|
2,500
|
3,000
|
580
|
235
|
195
|
52
|
3,000
|
4,000
|
635
|
255
|
210
|
58
|
4,000
|
5,000
|
685
|
275
|
225
|
61
|
5,000
|
6,000
|
730
|
295
|
235
|
65
|
6,000
|
7,000
|
770
|
310
|
245
|
68
|
7,000
|
8,000
|
800
|
320
|
250
|
72
|
8,000
|
9,000
|
835
|
335
|
255
|
75
|
9,000
|
10,000
|
865
|
345
|
260
|
78
|
10,000
|
12,000
|
875
|
370
|
270
|
82
|
12,000
|
14,000
|
885
|
390
|
275
|
87
|
14,000
|
16,000
|
900
|
405
|
280
|
90
|
16,000
|
18,000
|
940
|
420
|
285
|
94
|
18,000
|
20,000
|
975
|
435
|
290
|
98
|
20,000
|
25,000
|
1,055
|
470
|
315
|
105
|
25,000
|
30,000
|
1,130
|
500
|
340
|
112
|
30,000
|
35,000
|
1,205
|
525
|
360
|
119
|
35,000
|
40,000
|
1,275
|
550
|
380
|
124
|
40,000
|
45,000
|
1,340
|
570
|
400
|
129
|
45,000
|
50,000
|
1,400
|
590
|
420
|
135
|
50,000
|
55,000
|
1,460
|
610
|
440
|
140
|
55,000
|
60,000
|
1,515
|
630
|
455
|
145
|
60,000
|
65,000
|
1,565
|
645
|
470
|
150
|
65,000
|
70,000
|
1,610
|
660
|
485
|
155
|
70,000
|
75,000
|
1,655
|
675
|
500
|
160
|
75,000
|
80,000
|
1,695
|
690
|
510
|
165
|
80,000
|
85,000
|
1,730
|
705
|
520
|
170
|
85,000
|
90,000
|
1,760
|
720
|
530
|
175
|
90,000
|
95,000
|
1,790
|
730
|
540
|
180
|
95,000
|
100,000
|
1,815
|
745
|
545
|
185
|
100,000
|
110,000
|
1,835
|
770
|
550
|
195
|
110,000
|
120,000
|
1,855
|
790
|
555
|
205
|
120,000
|
130,000
|
1,875
|
810
|
560
|
215
|
130,000
|
140,000
|
1,890
|
835
|
565
|
225
|
140,000
|
150,000
|
1,900
|
850
|
570
|
235
|
150,000
|
160,000
|
1,935
|
870
|
580
|
245
|
160,000
|
170,000
|
1,965
|
890
|
590
|
255
|
170,000
|
180,000
|
1,990
|
905
|
600
|
265
|
180,000
|
190,000
|
2,010
|
920
|
605
|
275
|
190,000
|
200,000
|
2,030
|
935
|
610
|
285
|
200,000
|
210,000
|
2,055
|
955
|
620
|
295
|
210,000
|
230,000
|
2,100
|
980
|
635
|
315
|
230,000
|
250,000
|
2,155
|
1,010
|
650
|
335
|
250,000
|
275,000
|
2,215
|
1,040
|
670
|
360
|
275,000
|
300,000
|
2,275
|
1,075
|
690
|
385
|
NOTES:
|
---|
Note a. All types of blasting caps in strengths
through No. 8 shall be rated at one and one-half (1½) pounds
(0.68 kg) of explosives per one thousand (1,000) caps.
|
Note b. "Barricaded" means that a building
containing explosives is effectually screened from a magazine, building,
railway, or highway, either by a natural barricade or by an artificial
barricade of such height that a straight line from the top of any
sidewall of the building containing explosives to the eave line of
any magazine or building, or to a point twelve (12) feet above the
center of a railway or highway, will pass through such intervening
or artificial barricade.
|
Note c. "Artificial barricade" means an artificial
mound or revetted wall of earth of a minimum thickness of three (3)
feet.
|
Note d. "Natural barricade" means natural features
of the ground, such as hills or timber of sufficient density that
the surrounding exposures which require protection cannot be seen
from the magazine when the trees are bare of leaves.
|
Note e. When a building containing explosives
is not barricaded, the distances shall be doubled.
|
Note f. When two (2) or more storage magazines
are located on the same property, each magazine shall comply with
minimum distances specified from inhabited buildings, railways and
highways, and in addition they shall be separated from each other
by not less than the distances shown for "separation of magazines",
except that the quantity of explosives contained in cap magazines
shall govern in regard to the spacing of said cap magazines from magazines
containing other explosives. If any two (2) or more magazines are
separated from each other by less than the specified "Separation of
magazines" distances, then such two (2) or more magazines, as a group,
shall be considered as one (1) magazine, and the total quantity of
explosives stored in such group must be treated as if stored in a
single magazine located on the site of any magazine of the group and
shall comply with the distances specified from other magazines, inhabited
buildings, railways and highways.
|
Note g. This Table applies only to the manufacture
and permanent storage of commercial explosives. It is not applicable
to transportation of explosives, or any handling or temporary storage
necessary or incident thereto. It is not intended to apply to bombs,
projectiles, or other heavily encased explosives.
|
Note h. One (1) pound equals 0.454 kg; one
(1) foot equals 304.8 mm.
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