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RESULTS OF TESTS ON THE BARRIER PANELS
Attack 2A Exterior Attack in Process
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1,500 Frequency Hz 10-pound sledgehammer 14 bolt cutters 25 50 Frequency 26-pound bar 50 Frequency kHz 50-pound battering ram Abrasive Wheel Saw acoustical and vibrational Acoustical Disturbances Produced attack tooling average cutting rate burning bar Climb concertina wire concrete block Construction of Panel Cutter Attacks dBC were observed depth diagonal pliers diameter distance of 12 disturbances are shown expanded metal fibrous concrete Frequency kHz 50 Frequency kHz Figure gasoline-powered holes hubless saw kHz 50 Figure lift and crawl linesman's pliers mesh minutes elapsed Multiple Sweep Traces Opening Produced opening shown operators Panel 13 Panel 9 penetration resistance plasterboard plywood polyurethane Produced by Abrasive saber saw seconds per inch shown in figure spalled STUDS Sweeps of Vibrational taper punch target area Test 12 Test 13B Test 15U Test 2B Test 7A Test F6 Test Fl Figure thickness timbers transducer Vibrational Disturbances Produced Vibrational Disturbances Resulting vise grip cutters