Guide for Evaluating Blast Resistance of Existing Undefined Arch-type Earth-Covered Magazines
Abstract
The purpose of this guide is to provide installations with procedures to determine the adequacy of undefined earth-covered magazine headwalls to withstand the blast from a known quantity of explosives at a known distance. This is accomplished by comparing the impulse capacities of the various headwall elements (wall, pilaster, and door) to the impulse generated by an imposed blast environment. The impulse capacities for the various headwall elements and the blast environment data are supplied by this guide. An undefined magazine is any earth-covered magazine (ECM) not listed as 3-bar or 7-bar in Table AP1-1 of Appendix A in DDESB Technical Paper No. 15. The information in this guide is the result of full and reduced scale tests that were made in order to determine the explosive effects resulting from an explosion in an earth-covered magazine. The guide also represents the application of the structural analyses methods given in UFC 3-340-02, "Structures to Resist the Effects of Accidental Explosions," in order to develop procedures that can be used to determine the adequacy of existing undefined earth-covered magazine headwalls and doors to withstand the effects from an explosion in an adjacent earthcovered magazine. This guide should not be used for establishing the requirements for new earth-covered magazine designs. This document can be used to make an initial evaluation of an existing arched-roof earth-covered magazine of unknown structural strength designation to determine if it might qualify as 3-bar or 7-bar, but a structural analysis in accordance with UFC 3-340-02 would be required to obtain approval from DDESB to site the earth-covered magazines as 3-bar or 7-bar.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 2013
- Accession Number
- ADA608633
Entities
People
- Derek Beck