Overview of UFC 3-340-02 Structures to Resist the Effects of Accidental Explosions

UFC 3-340-02, "Structures to Resist the Effects of Accidental Explosions," was recently approved by the Services. Publication of UFC 3-340-02 represents the culmination of a 5-year, Department of Defense Explosives Safety Board (DDESB) effort to update DoD's mandatory blast design requirements for explosives safety applications, as provided in Army TM 5-1300/NAVFAC P-397/AFR 88-22 (TM 5-1300), revision 1, November 1990. As an unlimited distribution document approved for public release, TM 5-1300 has long provided both government and private sector engineers with an invaluable source of blast effects and loading data and with step-by-step procedures for blast analysis and design. UFC 3-340-02 continues this tradition, using straightforward guidance and examples to illustrate and explain protective construction design requirements. While based upon TM 5-1300, UFC 3-340-02 incorporates several beneficial changes to the manual's reinforced concrete design requirements. This presentation provides an overview of the more significant of these changes. Anticipated, future revisions and additions to other chapters also are presented and discussed. UFC 3-340-02 may be downloaded from the Whole Building Design Guide website. For users who have the DPLOT computer program, readable versions of some manual figures also are available through this website. In 2003, the Department of Defense Explosives Safety Board (DDESB) established a Technical Working Group to revise the tri-service blast design manual, "Structures to Resist the Effects of Accidental Explosions," Army Technical Manual 5-1300/NAVFAC P-397/AFR 88-22. As an unlimited distribution document approved for public release, TM 5-1300 provides both government and private sector engineers with an invaluable source of blast effects and loading data and with step-by-step procedures for blast analysis and design. This paper provides a status update of TWG activities and plans for future work. Emphasis will be given to revisions to chapter 4, "Reinforced Concrete Design." Anticipated revisions and additions to other manual chapters also will be presented and discussed.