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Loyd W. Martin Solar Structures Engineering <br />2510 W. 237th St. #206 Torrance, CA 90505 Tel:1.310.464.1804 <br />Email: loydwmartin@gmail.com www.loydwmartin.com <br />Check Existing Roof Rafters: <br />P PP PP P <br />WDL + LL- <br />0 90 FF F <br />ilitililimililljoilillifilli <br />W DL + LL = 30 psfx 2 ft. = 60 pIf W DL - <br />Rl R2 <br />19.5' <br />3' 16.5' <br />Total load on rafter =60 pif x3 ft. +28 pif x 16.5 ft +(4'x 2.75' x3 psf x6) <br />= 840 lbs <1,170 lbs OK <br />Check attachment of Support to Existing Structure for Wind Uplift <br />CHECK SOLAR STRUCTURE ATTACHMENTS PER ASCE 7-10 COMPONENTS AND <br />CLADDING METHOD 1 PART 2 FIGURE 30.5-1 THEREFORE CHECK ATTACHMENT <br />FOR TYPICAL CRITICAL LOAD WHICH IS THE EDGE ZONE - ZONE 2 <br />NOTE: PER DEFINITION ON SHEET 243 OF ASCE 7-10 EFFECTIVE WIND AREA: <br />"FOR CLADDING FASTENERS THE EFFECTIVE WIND AREA SHALL NOT BE <br />GREATER THAN THE AREA THAT IS TRIBUTARY TO AN INDIVIDUAL FASTENER." <br />PER FIGURE 30.5-1 OF SHEET 346 ASCE 7-10 WIND SPEED 130 MPH - <br />EFFECTIVE AREA = 15 SQ FT /;464 \N. 41£\ 443 <br />INTERPOLATION OF WIND UPLIFT FORCE:1(22( No. C58724 -3 93\* Exp. 3-31-15 * <br />H#21 clv\i ) <br />pneoo = -46.5 psf k#/EOFCALIFO <br />2014- 755 Nexus Energy Sylvina Cornejo Residence <br />Sht # 3 of 6 <br />Date: May 16, 2014