b'TECHNICAL ARTICLE(a)Fastener Pullout Resistance1/2" Plywood SDFastener Pullout Resistance, lbf Sustained Pressure, psf400 375300 267 300220 230 236 250 2362001000Mod. Bit. EPDM TPO EPDM40 ksi 100 ksi (b)Wind Uplift Resistance1/2" Plywood SD14012010080 75 75 75 75 7563 6360 5040200Mod. Bit. EPDM TPO EPDM40 ksi 100 ksi(c)Ratios0.95 1 Small Scale Ratio System Ratio1 0.88 0.84 0.79 0.84Wood : SteelRatio0.8 0.67 0.670.60.40.20Mod. Bit. EPDM TPO EPDM40 ksi 100 ksiFigure 4: Small scale and system test data for 1/2 plywood; (a) fastener pullout resistance; Figure 4: Small-scale and syst ios (b)wind uplift resistance; (c) rat em test data for 1/2 plywood; (a) fastener pullout resistance; (b)wind uplift resistance; (c) ratios.www.rcabc.orgl31'