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Project Number : 343- 0135T -09A -C <br /> PROCEDURE; <br /> 1. The roof assembly was subjected to all five phases of the Class 30, Class 60 & <br /> Class 90. At the end of each phase the test specimen was inspected. <br /> 2. Throughout the test, observations were made of the control of positive and <br /> negative pressures and of the condition of the top surface and the under side of <br /> the test assembly. <br /> 3. The action of the roof assembly during the application of the steady pressures in <br /> Phases I, 11, IV, and V was a bowing up between screw attachments, with the <br /> joists and plywood substrate following the same pattern. <br /> 4. The action of the test assembly during the oscillating phase of each test (Phase <br /> III) was a rising and settling of the members. <br /> 5. After the Class 90 phase, the positive pressure was set at 9.3 inches of water and <br /> remained constant; the negative pressure was increased by increments of 15 psf <br /> until the panel assembly failed. <br /> RESULTS /CONCLUSIONS; <br /> Test A <br /> The maximum sustained combined test pressure was 172.0 psf. The ultimate <br /> sustained combined test pressure was 187.0 psf. The failure mode was the panel <br /> fasteners pulled out of the plywood. <br /> Test B <br /> The maximum sustained combined test pressure was 157.0 psf. The ultimate <br /> sustained combined test pressure was 172.0 psf. The failure mode was the panel <br /> fasteners pulled out of the plywood. <br /> Test C <br /> The maximum sustained combined test pressure was 247.0 psf. The ultimate <br /> sustained combined test pressure was 260.0 psf. The failure mode was the panel <br /> fasteners pulled out of the plywood. <br /> ••. t ACE E. 47,, <br /> Note: During this test, tape and plastic were used to seal against air litiligkge - 14 ' `. " ∎. <br /> tape and plastic had no restrictive influence on the test. :4 . \, , s' 0 <br /> . No. • _ : , <br /> . .. <br /> STATEMENT OF INDEPENDENCE: <br /> 3 <br /> �: p ‘ .r <br /> Force Engineering & Testing, Inc. or any persons employed by them do S j • • . <br /> any financial interest in Advanced Aluminum. * * '++:e a set�•�`'` <br /> Force Engineering & Testing, Inc. is not owned, operated or controlled by 1 1 6 t gr <br /> Advanced Aluminum_ <br /> VA /7A �hti -I wnHTwmti agnNtonati Gbn bpbgL - c 7T :PT TTIa7 iCa 17c <br />