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JOB NO.: U2782.1095.201 <br /> SUBJECT: SEISMIC LOADS <br /> VECTOR <br /> E n O I n E E R S <br /> PROJECT: Alfonso Aguirre Residence <br /> CHECK INCREASE IN OVERALL SEISMIC LOADS <br /> Estimated Roof Dead Load 10.3 psf <br /> Solar Dead Load 3.0 psf <br /> % Roof Covered 18% <br /> Equiv. Total Dead Load 10.8 psf <br /> Addt'l Seismic Weight 5.2% <br /> Conservatively neglecting the weight of existing wall materials, the installation of the solar panels represents an <br /> increase in the total weight(and resulting seismic load) of 5.2%. Because the increase is less than 10%, this <br /> addition meets the requirements of the exception in Section 807.5 of the 2015 IEBC. Thus the existing structure is <br /> permitted to remain unaltered. <br /> SEISMIC PARAMETERS <br /> Risk category: II Fa: 1.0 <br /> Seismic Design Category: D Fv: 1.5 <br /> 1p: 1.00 SMS: 1.436 <br /> Site Class: D SM1: 0.831 <br /> Rp: 1.5 Sos: 0.957 <br /> Ss: 1.436 SDI: 0.554 <br /> Si: 0.554 <br /> COMPARE WIND & SEISMIC LOADS FOR CONNECTION (1 Sq. Ft. Section) <br /> Wind Load, W: <br /> Wind pressure, p: 12.1 psf(Zone 1: 0.6 W from wind pressure calculation) <br /> Height, h: 1.0 ft <br /> Width, w: 1.0 ft <br /> Fperp: 12.1 lb (Uplift) Wind Controls Connection Design <br /> Seismic Load, E: <br /> ap: 1 0.7 * Fp,min: 0.603 lb <br /> z: 1.0 ft 0.7 * Fp,max: 3.217 lb <br /> h: 1.0 ft 0.7 * Fp,vert: 0.402 lb <br /> z/h: 1.0 0.7 * Fp,long: 1.608 lb <br /> 0.7*Fp,perp: 0.904 lb (uplift) <br /> r <br /> (/( <br />