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r , <br /> l <br /> 1 Ze . <br /> ttr �t ura lNGINEERS <br /> August 6,2019 <br /> SnapNrack <br /> 775 Fiero Lane,Ste. 200. <br /> San Luis Obispo,CA 93401 <br /> TEL:.(877)732-2860 <br /> Attn.:SnapNrack-Engineering Department <br /> Subject: Report#2018-11940.03—Engineering Certification and Span Tables for the SnapNrack Ultra Rail Solar <br /> Photovoltaic Racking System <br /> 'I <br /> PZSE, Inc.—Structural Engineers has reviewed and analyzed the SnapNrack Ultra Rail Racking System, a proprietary <br /> mounting system constructed from modular parts,which is intended for rooftop installation of solar photovoltaic(PV) <br /> panels;and has provided the attached span tables. This review included the complete system including the "UR-60" <br /> aluminum rail(6005-T56 alloy),attachment devices,splice elements,and Pb Panels. All information,data,and analysis.- <br /> contained within are based on,and comply with,the following building codes and typical specifications: <br /> Building Codes: .1. ASCE/SEI 7-16, Minimum.Deslg Loads for Buildings and.Other Structures, by American Society of. <br /> Civil Engineers <br /> 2. -2018 International Building Code; by International Code Council, Inc.- <br /> 3. 2018 International Residential Code, by International Code Council, Inc. <br /> 4. AC428,Acceptance Criteria for Modular Framing Systems Used to-Support Photovoltaic.(PV) . <br /> Panels, November 1,2012 by ICC-ES <br /> 5. Aluminum Design Manual 2015, by.The Aluminum Association; Inc. <br /> 6. ANSI/AWC NDS-2015, National;Design Specification for Wood Construction, by.the American_ <br /> Wood Council <br /> Design Criteria: Risk Category II;Seismic Design Category=A-E <br /> i <br /> Wind Loads: Basic.Wind Speed (ultimate) per ASCE.7-16=95 mph to 190 mph. Includes roof pitches from 0°to 90% <br /> up to 60 feet mean roof height,and exposure categories B,C, &D. Parapets; roof overhangs,.and <br /> topographic wind speed adjustment have not been considered. <br /> Snow Loads: Ground Snow Load=0 to 120(psf).i Spans are based on the sloped roof snow load (Ps)corresponding <br /> to each ground snow load. See Appendix A to adjust span tables for non-reducible snow loads. <br /> PV Modules: All solar PV modules with metal frames. "60-Cell"tables are applicable for modules up to 5'-6" (66").. <br /> long; "72-Cell"tables are applicable for modules up to-6'-6" (78") long; and "Landscape.".tables are- . <br /> applicable for modules up to 3'4-1/2" (40-1/2") long in.the narrow direction. Module length is. <br /> defined to be perpendicular to the rail, regardless of panel orientation. <br /> If you have any questions,.do not hesitate to call. ' <br /> i <br /> Prepared by: <br /> PZSE, Inca—Structural Engineers <br /> Roseville, CA <br /> 1478 Stone.Point Drive,Suite 190, Roseville,CA 95661- <br /> T .916.961.3960 F 1916.961.3965 w www.pzse.com 1/923. <br /> -Experience Integrity -l. Empowerment <br />