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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 />Per the Aluminum Design Manual, the allowable stress for the proposed 6005-T5 <br />aluminum rails (38,000 psi min. ultimate tensile strength) is 19.5 ksi. <br />Based on this allowable stress and the section modulus of each rail listed on the <br />previous page, the maximum allowable moment for the Standard Rail is 429 lb-ft <br />and the maximum allowable moment for the Ecolite Rail is 213 lb-ft. <br />Each loading condition listed in the summary table was analyzed to determine the <br />maximum moments of all spans in a similar manner as shown in the example <br />scenario. The maximum moments were compared to the allowable load limits listed <br />above to determine the maximum allowable spans. <br />Example Scenario: <br />The rail is governed by downward compression loads from dead plus snow <br />loads with a maximum moment of 414 lb-ft. with a 7 ft. span. The 7.5 ft. span <br />condition has a maximum moment of 476 lb-ft. which exceeds the Standard <br />Rail maximum allowable moment of 429 lb-ft. and therefore, the maximum <br />span under the example conditions listed is 7 ft. This matches the span noted <br />in the summary tables for this condition. <br />Page 83 <br />2004 W Picasso - <br />2018062008/29/23