Ammunition and Explosive Storage Magazines
Steel, Semi-Circular Arch AW 33-15-63
| Approved for New Construction | ECM Designation | Designer & Drawing Number | DDESB Approval Date |
|---|---|---|---|
| No | 7-BAR | OCE Steel, Semi-Circular Arch AW33-15-63 | 19-Feb-64 |
Comments/Design Considerations -
Approved during 225th ASESB meeting of 19 Feb 64 as a standard magazine design. A 1 Apr 87 COEHQ letter stated that ECM design AW 33-15-63 was no longer being used for new construction. Drawing AW 33-15-63 had two designs shown on it. One is a traditional magazine with a single 12-inch thick reinforced concrete headwall, while the second is a design with two headwalls and doors (flow through design) COE structural evaluation of AW 33-15-63 door in 2003 determined the door would not provide 7 or 3- Bar protection.
The conversion of these designs from Standard magazines to 7-Bar magazines in the early 1990s was in error in that the hinged doors of AW 33-15-63, AW 33-15-64 and 33-15-65 (all similar door designs) are not capable of providing 7 or 3-Bar protection to their contents. This determination was arrived at during ESKIMO III, which tested a AW 33-5-64 design and by a structural analysis of the door design that was conducted by the Huntsville COE at the request of DDESB-KT. Paragraph C2.3.7.3. ESKIMO III, June 1974 provides further information regarding this test. If different doors than those shown of AW 33-15-63, AW 33-15-64, and 33-15-65 have been installed, then the headwall and alternate door(s) can be structurally evaluated to determine their strength. As a result of the ESKIMO series tests, services began moving towards single and bi-sliding doors or hardened headwall pilasters and header.
Siting guidance: Do not use for new construction. Site existing magazines as Undefined structures to provide a higher level of protection to contents. Use of the K4.5 that is permitted for 7-Bar ECM (face-to-face) with intervening barricades or the K6 permitted for 7-Bar ECM (face-to-face) without a barricade provides a very high likelihood of prompt propagation between ECM designed to AW 33-15-63, AW 33-15-64 and 33-15-65.
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