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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 November 15,2019 <br /> Re:Proposed Photovoltaic Solar Panel Installation <br /> Linda Anderson <br /> 36212 Shady Bluff Loop <br /> Zephyrhills,FL 33541 <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"x4"wood trusses @24"o.c. <br /> spanning 19'11"with a top chord length of 8'4"with intermediate supports at 1/3rd points,making the effective <br /> longest span equals 217'with with 1/2"plywood sheathing.The new array(See Site map by contractor)will add <br /> 2.63 Lb./Sf overall to the roof.No additional structural support is required for the roof structure. <br /> 2.The system shall be secured to the roof using the"Ecofasten Solar""Rock-IT"®attachment system.The <br /> installation shall be in strict compliance with manufacturers printed instructions.The attachment system shall be UL <br /> 1703 approved tested.The attachments shall be min.5/16"x 4"long stainless-steel lags with a min.embedment of 3" <br /> into the rafters.Attachments shall be @ 48"o.c.max.in roof wind zone 1,@ 24"o.c.max.in roof wind zone 2,&3, <br /> lags to alternate rafters.Provide 6 mil.vapor barrier between dissimilar metals.Provide water tight gasket and sealant <br /> at all penetrations. Attachments shall follow panel rows as specified by the system manufacturer's installation <br /> manual.The panel angle shall match the roof slope. <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 /> OF <br /> o PNIEL <br /> Daniel W.Dunzik,RA.LEED-AP <br /> FL.Lic.No.AR98795 gR9879g <br /> �&,;ARCS®'� <br />