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���i`I.``�T'\,V ����`'T 'j� ♦
<br /> t - :J, � , Survey the Site _
<br /> � • Measure the roof surfaces and develop an accurate drawing, including
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<br /> any obstacles such as chimneys and roof vents.
<br /> � �� °�� th lans match the final
<br /> � , • If plans are available, check to make sure that e p
<br /> sJ � structure.
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<br /> ,: �� � � � • Review the shading pattern across the roof surface from the residence itself,
<br /> � Or,�.,;, .V,,�; �-., �; ,� from adjacent structures, and from other nearby features such as trees.
<br /> �,;`��r.=/J�� "; ��� • Identify any roof access areas or keep-out areas as required by the local
<br /> �� . ! � ,r,f.:'�Vi. .
<br /> , � �� �, '� ', � jurisdiction.
<br /> �,� � ' ` • Confirm roof construction, t e, and condition.
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<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.
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<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 /> ��,,�t,;� ., , that may compromise the structure's integrity, consult a structural engineer.
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<br /> � , ° .. ` � � MODULE WIDTH
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<br /> i , . - , , � —� MODULE LENGTH
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<br /> � � � PORTRA T MODE LANDSC PE MODE
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<br /> � - , , Develop a Layout
<br /> f � ' ' Using the information collected in the site survey and from the span tables, complete a
<br /> a. . �� - , system layout showing array location and distances from key roof features. Include
<br /> '. � -. any information necessary for the permitting process.
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<br /> p � � � � � _- � �� ,� • yp� y, PV modules are installed in ortrait mode, with the lon side of the
<br /> � � • module running up the roof slope and the rails running horizontally across the roof
<br /> � � � ` , � � S perpendicular to the roof rafters, which commonly run down slope.
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