Ammunition and Explosive Storage Magazines
Steel Oval Arch 33-15-73
| Approved for New Construction | ECM Designation | Designer & Drawing Number | DDESB Approval Date |
|---|---|---|---|
| No | 7-BAR | OCE Steel Oval Arch 33-15-73 | 7-Feb-75 |
Files for Reference -
Digital Drawings -
Digital Drawings -
- PDF Version
(PDF 590 KB, 8 pgs)
- Approval Letter
(PDF 54 KB, 1 pg)
Comments/Design Considerations -
A 1 Apr 87 COEHQ letter stated that ECM design 33-15-73 was no longer being used for new construction. A 25 Feb 1985 OCE letter had rescinded use of this design due to excessive deflections that could occur at the crown of the steel arch, due to the weight of the earth cover, and as a result of the collapse of an ECM in the field because of this problem. A 7 Feb 1975 DDESB memorandum approved OCE 33-15-73 (Oval Steel Arch) as a substitute igloo for AW 33-15-64, for use for any application for which a standard igloo is specified. This memorandum was in response to a Ft. Leonard Wood project (Project No. 109, Ammunition Storage Facility). Superceded by 421-80-01.
A 1 Apr 87 COEHQ letter stated that ECM design 33-15-73 was no longer being used for new construction. A 25 Feb 1985 OCE letter had rescinded use of this design due to excessive deflections that could occur at the crown of the steel arch, due to the weight of the earth cover, and as a result of the collapse of an ECM in the field because of this problem. A 7 Feb 1975 DDESB memorandum approved OCE 33-15-73 (Oval Steel Arch) as a substitute igloo for AW 33-15-64, for use for any application for which a standard igloo is specified. This memorandum was in response to a Ft. Leonard Wood project (Project No. 109, Ammunition Storage Facility). Superceded by 421-80-01.
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