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ENGINEERED POWER SOLUTIONS <br />72 SOUTH MAIN STREET, SUITE A <br />TEMPLETON, CA 93465 <br />Solar Warehouse Rail Analysis – Generic Packet <br />• Constant Design Parameters: <br />o Size and Weight of Module1: <br />▪ 72-cell modules: <br />• 78” x 40” / 55 lbs. <br />o Wind Design Parameters: <br />▪ Topographic Factor2,3 (Kzt): 1.00 <br />▪ Wind Directionality Factor2 (Kd): 0.85 <br />▪ Velocity Pressure Exposure Coefficient2,4,5 (Kz): <br />• Exposure B: Kz = 0.7 <br />• Exposure C: Kz = 0.98 <br />▪ Ground Elevation Factor12 (Ke): 1.00 <br />o Snow Design Parameters: <br />▪ Exposure Factor6 (Ce): 1.0 <br />▪ Thermal Factor (Ct): 1.2 <br />▪ Importance factor7 (I): 1.00 <br />• Assumptions: <br />o Max Spans listed in the summary tables are based on the assumption that the <br />rails have a single span with the rail cantilevering beyond the last anchor on <br />each side per Rail End Cantilever requirements listed below. Rail span in- <br />creases for continuous rails over (3) spans or more are listed in the summary <br />table notes. <br />o Rail End Cantilever shall be: <br />▪ No less than 25% of the rail span adjacent to the cantilever. <br />▪ No more than 40% of the rail span adjacent to the cantilever. <br />o Spans between 2 ft. – 9 ft. (0.5 ft. increments) <br />o Module Tilt: Flush with roof (Roof tilt is limited to between 0° & 45°)11 <br />o The existing structure the PV is being installed on is a Risk Category II (or <br />less) structure. 7 <br />o Roof type shall be single Gable or Hip roof types only.11 <br />→ see design parameter notes on following pages <br />Page 8 <br />2004 W Picasso - <br />2018062008/29/23