Laserfiche WebLink
® <br />VSE Project Number: U3211.0184.231 <br />June 19, 2023 <br />GC Electric Corporation, dba Electric Solar <br />ATTENTION: Sepehr <br />7950 Silverton Ave #109 <br />San Diego, CA 92126 <br />REFERENCE: Crown Ranch Project 4 Residence: 4182 Jameson Drive, Corona, CA 92881 <br />Solar Array Installation <br />To Whom It May Concern: <br />We have reviewed the existing structure at the above referenced site. The purpose of our review was to determine the <br />adequacy of the existing structure to support the proposed installation of solar panels on the roof as shown on the panel <br />layout plan. <br />Based upon our review, we conclude that the existing structure is adequate to support the proposed solar panel installation. <br />Design Parameters <br />Code: California Residential Code, 2022 Edition (2021 IRC) <br />Risk Category: II <br />Design wind speed, Vult: 96 mph (3-sec gust) <br />Wind exposure category: C <br />Seismic design category: D <br />Connection to Roof <br />Mounting connection: (1) 5/16" lag screw w/ min. 2.5" threaded embedment into framing at max. 72" o.c. along rails <br />Install (2) rails per row of panels, evenly spaced; panel length perpendicular to the rails shall not exceed 71.7 in <br />Rail cantilever shall not exceed the lesser of 50% of the connection spacing or maximum cantilever allowed by <br />manufacturer <br />Connections shall be staggered so as not to overload any existing structural member <br />Conclusions <br />Based upon our review, we conclude that the existing structure is adequate to support the proposed solar panel installation. <br />In the area of the solar array, other live loads will not be present or will be greatly reduced (2022 CRC, Section R324.4.1.1). <br />The gravity loads, and thus the stresses of the structural elements, in the area of the solar array are either decreased or <br />increased by no more than 5%. Therefore, the requirements of Section 503.3 of the 2022 CEBC are met and the structure is <br />permitted to remain unaltered. <br />651 W. Galena Park Blvd., Ste. 101 / Draper, UT 84020 / T (801) 990-1775 / F (801) 990-1776 / www.vectorse.com <br />2514 S Shelton St <br />08/17/23