Forced Entry Testing of Five-Minute Walls.
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS STRUCTURES LAB
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The U.S. Department of State DOS, Office of Foreign Building Operations FBO, has a requirement to design forced entry resistant walls for DOS facilities world-wide. Based primarily on the results of forced entry tests, FBO may certify a given wall design at one of three levels of forced entry protection. The three levels of forced entry protection defined by FBO 5, 15, and 60 minutes imply a delay time provided against known groups of assault tools and numbers of assault personnel. In Fiscal Year 1995, FBO tasked the U.S. Army Engineer USAE Waterways Experiment Station WES to conduct a series of forced entry tests on various wall panels designed by FBO to meet the 5-minute forced entry protection level. Common construction materials, including concrete masonry units, lumber, plywood, and gypsum wallboard, were used to build the wall panels. Each timed assault test involved a two-man teams attempt to create a man-pass-able opening in a panel using various hand tools sledgehammer, crowbar, wedge, etc.. Delay times provided by the various panels ranged from less than 3 minutes to nearly 15 minutes. MM
- Construction Equipment, Materials and Supplies
- Structural Engineering and Building Technology
- Defense Systems