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RESULTS OF TESTS ON THE BARRIER PANELS
Multiple Sweeps of Acoustical Disturbances Produced by Punch and 10 lb Sledgehammer Test 6B
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1,500 Frequency Hz 10-pound sledgehammer 14 bolt cutters 25 50 Frequency 25 Frequency 26-pound bar 50 Frequency kHz Abrasive Wheel Saw acoustical and vibrational Acoustical Disturbances Produced barrier panels Battering Ram blows 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 drill expanded metal EXTERIOR ferro-cement fibrous concrete Frequency kHz 50 Frequency kHz Figure hubless saw interior kHz 50 Figure layers lift and crawl liner linesman's pliers mesh minutes elapsed Multiple Sweep Traces Opening Produced opening shown operators Panel 12 penetration resistance plasterboard plywood polyurethane Produced by Abrasive saber saw seconds per inch shown in figure sledge spalling spectrum analyzer structural barriers STUDS taper punch target area Test 13B Test 15U Test 2B Test 7A Test F6 Test Fl Figure thickness transducer Vibrational Disturbances Produced Vibrational Disturbances Resulting vise grip cutters