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Daniel W. Dunzik Architect LEED-AP <br /> 370 Burnt Hill Rd.Skillman NJ.08558 908-872-3664 <br /> StudioGdesign@comcast.net May 11,2020 <br /> Re:Proposed Photovoltaic Solar Panel Installation <br /> Kathryn Ambros <br /> 38104 9th Ave <br /> Zephyrhills,FL 33542 <br /> Dear Plan Reviewer: <br /> Certification:I have reviewed the engineering testing reports for the racking and attachments to be used on this <br /> project and I certify that the products are capable of supporting the code required loads and are suitable for this <br /> installation when installed in strict compliance with the manufacturers printed instructions. <br /> ,Regarding the solar panel array installation on the above referenced project please note that an inspection was <br /> performed by a representative of the Architect/Engineer of Record,and analysis of the existing structure was <br /> conducted.There is adequate structural capacity for the installation of the array with the following recommendations: <br /> 1.The array will be installed on the existing roof.The roof framing is constructed of 2"x6"wood rafters @24"o.c. <br /> spanning 107'with 1/2"plywood sheathing.The new array(See Site map by contractor)will add 2.63 Lb./Sf. <br /> overall to the roof.No additional structural support is required for the roof structure. <br /> 2.The attachment system shall be secured to the roof and shall be in strict compliance with manufacturers printed <br /> instructions.The attachment system shall be UL 1703 approved tested.Provide 6 mil.vapor barrier between <br /> dissimilar metals.Provide water tight gasket and sealant at all penetrations. Attachments shall follow panel rows as <br /> specified by the system manufacturer's installation manual.The panel angle shall match the roof slope.Reference <br /> summary table below: <br /> Roof Type: Shingle Fastener Max Spacing(in.) <br /> Attachment System: "Ecofasten Solar""Rock-IT"® Wind Zone 1 Wind Zone 2 Wind Zone 3 <br /> min.5/16"x 4"long stainless-steel lags with a min. ' 48. 24 24 <br /> Fastener Info: embedment of 3"into the rafters <br /> 3.Solar Modules shall be UL-1703 rated.Refer to manufacturers specifications sheets. <br /> 4.Positive drainage of the system shall be so as not to void the existing roof warranty. <br /> 5.All aspects of the installation shall comply with the Florida Administrative Code,2017 Florida Building Code- <br /> Residential Sixth Edition,ASCE-7-10,2017 Florida Building Code—Energy Conservation,Sixth Edition,2014 <br /> National Electric Code,All Local Governing County and Municipal Ordinances adopted by reference or enacted by <br /> law.All components used meet the criteria of the Florida Solar Energy Center. <br /> 6.Please refer to the attached structural calculations. <br /> If you have any questions relating to this matter,please contact me at your earliest convenience.Thank you. <br /> L W. <br /> Daniel W.Dunzik,RA.LEED-AP73 <br /> •;� <br /> FL.Lie.No.AR98795 AR98795 <br />