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Survey the Site <br /> ..Measure the roof surfaces and develop an-accurate drawing, including <br /> any obstacles such as chimneys and roof vents. <br /> If plans are available, check to make_ sure that the plans match the final <br /> -structure. <br /> • Review the shading.pattern across the roof surface from the residence itself, <br /> from adjacent.structures, and from other nearby features such as trees. <br /> Identify.any roof access areas or keep-out areas as required by the local <br /> jurisdiction.. <br /> • Confirm roof construction,type, and condition. <br /> • Assess roof rafter, size, material; and spacing to confirm that the structure is <br /> sound and can support the additional load of the array. <br /> •Identify any construction anomalies that may complicate the process of <br /> locating rafters from the roof surface.'.. <br /> • -if you find structural problems such as termite damage.or cracked rafters <br /> that may compromise the structure's integrity, consult a structural engineer., . <br /> �. i MODULE WIDTH <br /> - '� MO DU LE.LENGTH <br /> MIN <br /> SIMI <br /> PORTRA T MODE LANDSCAPE MODE <br /> Develop a Layout <br /> Using the information-collected in the site survey and.from.the span tables,_corhplete.a <br /> system layout showing array, location and distances from key roof features. Include <br /> any information necessary for the permitting process. . <br /> Typically, Pv modules are installed in portrait mode, with the long side of the <br /> module running up the roof slope and the rails running horizontally across.the roof_ <br /> perpendicular to the roof rafters; which commonly run down slope. <br /> .. r <br /> I_ <br /> z <br /> A Rix-01: 4 <br />