EP 1110-345-102
31 Aug 95
CHAPTER IV
NON-STANDARD MAGAZINES
4-1. General. Non-standard earth covered magazines are those
not listed in AR 385-64. Non-standard magazines are approved for
all quantities of explosives up to 250,000 pounds. Earth cover
over the top of these magazines should be equal to or greater
than that required for standard magazines.
4-2. Evaluating Non-Standard Magazines. Th 5-1300 should be
used to design or evaluate the blast resistance of non-standard
magazines. Headwalls and doors of standard magazines are
designed for 100 psi overpressure and 22 millisecond load
duration (equivalent impulse of 1,100 psi-millisecond). Magazines
not classified as standard must be analyzed for this loading to
determine whether storage capacity can be increased to 500,000
pounds. A guide prepared by the U.S. Army Engineer Division,
Huntsville provides procedures for determining the adequacy of
the non-standard headwalls and doors to withstand blast effects
from a donor explosive source.1 The guide is based on TM 5-1300
criteria and magazine tests.
4-3. Hybrid Magazines. Hybrid magazines have been developed and
used by installations to meet specific needs. As stated above,
these magazines use components from more than one standard
magazine. This type of magazine is not considered preapproved
for construction and, therefore, requires DDESB approval if it is
to be sited as a standard magazine. This magazine type offers no
real advantage over standard magazines and their use is
discouraged.
4-4. Preapproved Non-Standard Magazine. Magazine 422-15-01
(Figure 12) is a reinforced concrete cubicle magazine which is
preapproved for a limited storage of 425 pounds. This magazine
is approved for siting at the intermagazine separation distance
of standard magazines.
___________________
U.S. Army Engineer Division, Huntsville, HNDED-CS-93-4,
1
"Guide for evaluating Blast Resistance of Non-Standard
Magazines", December 1994.
A-24
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