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/ce/ <br />Astra v.2.120 <br />6/2/2025 10:49 PM CAT 1, EOSS <br />#AStamp <br />Subject: Structural Certification for Proposed Residential Solar Installation. <br />Job Number: 109R-428LE; Rev B1 <br />Client: Diane Le <br />Address: 3428 S Crawford Glen, Santa Ana, CA 92704 <br />Attn: To Whom It May Concern Signed on: 6/2/2025 <br />The existing structure is assumed to be a light-frame wood roof and free from damage, deterioration, or modification that would compromise its <br />structural integrity. Preliminary site information was obtained by a representative of Sunrun. Prior to installation of the solar PV system, a site <br />observation shall be conducted by a representative of Sunrun to confirm the above-noted assumptions. Structural evaluation of the loading is <br />based on the assumptions above and the applicable design criteria listed below. <br />Design Criteria: <br /> • 2022 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 installation of the PV system meets the requirements of the <br />applicable existing building code provisions adopted/referenced above. <br />Additionally, the PV module assembly and hardware supporting it have been designed according to manufacturer's specifications per the <br />loading criteria referenced above. <br />Installer shall inspect the existing roof framing to verify it is in suitable condition and does not exhibit any signs of damage which may diminish <br />the capacity of its members or connections prior to commencement of PV installation. If actual framing differs from the assumed condition, the <br />installer shall notify the engineer of record prior to proceeding with installation. <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 NA NA NA <br />Portrait NA NA NA <br />Roofing Material Pitch Structure Check <br />Tile 23°Pass <br />AR-02 <br />Orientation Attachment Spacing/Cantilever Configuration Max DCR Result <br />Landscape NA NA NA <br />Portrait NA NA NA <br />Roofing Material Pitch Structure Check <br />Tile 23°Pass <br />AR-03 <br />Orientation Attachment Spacing/Cantilever Configuration Max DCR Result <br />Landscape NA NA NA <br />Portrait NA NA NA <br />Roofing Material Pitch Structure Check <br />Tile 23°Pass <br />225 Bush St. Suite 1400 San Francisco, CA 94104 <br />Exp. 12/31/2026 <br />Digitally Signed On: 06/02/25