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/ce/ <br />Astra v.2.150 <br />9/23/2025 04:48 PM CAT 1 <br />#AStamp <br />Subject: Structural Certification for Proposed Residential Solar Installation. <br />Job Number: 109R-007GONZ; Rev A <br />Client: OSCAR GONZALEZ <br />Address: 2007 N Westwood Ave, Santa Ana, CA 92706 <br />Attn: To Whom It May Concern Signed on: 9/23/2025 <br />A field observation of the existing structure at the address indicated above was performed. Structural evaluation of the loading was based on <br />the site observations and the design criteria listed below. <br />Design Criteria: <br /> • 2022 CRC/CBC/CEBC, 7-16 ASCE & 2018 NDS <br /> • Basic (Category II) Wind Speed V=96 mph, Exposure B <br /> • Ground Snow Load = 0 psf <br />Based on this evaluation, I certify that the alteration to the existing structure by the installation of the PV system meets the requirements of the <br />applicable existing and/or new building code provisions referenced above. <br />Additionally, I certify that the PV module assembly including all attachments supporting it have been reviewed to be in accordance with the <br />manufacturer's specifications. <br />Results Summary (Hardware Check Includes Uplift Check on Attachments/Fastener, Structure Check Considers Main Structure) <br />AR-01 <br />Orientation Attachment Spacing/Cantilever Configuration Max DCR Result <br />Landscape 72 / 28 Stacked 36%Pass <br />Portrait 72 / 27 Stacked 38%Pass <br />Roofing Material Pitch Structure Check <br />Comp Shingle 14°Pass <br />AR-02 <br />Orientation Attachment Spacing/Cantilever Configuration Max DCR Result <br />Landscape 72 / 28 Stacked 35%Pass <br />Portrait 72 / 27 Stacked 38%Pass <br />Roofing Material Pitch Structure Check <br />Comp Shingle 23°Pass <br />AR-03 <br />Orientation Attachment Spacing/Cantilever Configuration Max DCR Result <br />Landscape 72 / 28 Stacked 35%Pass <br />Portrait 72 / 27 Stacked 38%Pass <br />Roofing Material Pitch Structure Check <br />Rolled Comp 2°Pass <br />225 Bush St. Suite 1400 San Francisco, CA 94104 <br />Exp. 12/31/2026 <br />Digitally Signed On: 09/23/25