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w DL + LL <br />R1 R2 <br />w = 30 psf x 2 ft. = 60 plf <br />6' <br />(Assume max rafter span = 6.9 ft.) <br />= 60 plf x 6 ft. = 360 lbs <br />Note to Building Official: <br />Based upon a review of the proposed plans I am confident that the <br />existing roof framing system is capable of safely supporting the additional <br />loads caused by the solar photovoltaic energy system. The contractor <br />shall field verify that the existing roof structure is in its original permitted <br />condition and verify that it can support the normal code required roof live <br />loads. Attached in this package are several calculations showing that the <br />roof members can support the additional weight of the solar array. <br />Furthermore, an analysis of the solar array's support for wind forces and a <br />seismic analysis of the existing structure are also included. <br />Check 2x4 Rafters @ 24" O.C.*: <br />Total load on rafter <br />*Note: Contractor to Field Verify Framing <br />Loyd W. Martin Professional Engineer, Inc. <br /> 9924 Universal Boulevard #224- 406 Orlando, FL 32819 Tel:1.310.464.1804 <br /> Email: loydwmartin@gmail.com www.loydwmartin.com <br />Sht # 2 of 8 <br />Exp. 3-31-19 <br />No. C58724 <br />NITRAMW.DYO <br />REGISTEREDPROFESSIONALENGINEER <br />C <br />V <br />L <br />FOETATS <br />ALIFORNIAICIL <br />123 <br />2022- 3209 Plug It In Solar Chad Barker Date: August 09, 2022 <br />2014 N Flower St <br />09/12/22