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PZ <br /> structural <br /> ENGINEERS <br /> Components and Cladding Roof Zones: <br /> The Edge Zones of the roof shall be determined based on the building's dimensions using Figure 2 below.The Edge Zone, <br /> "a", is the smaller of 10%of the least horizontal dimension, or 40%of the building height, and "a" shall not be taken as <br /> less than 3 feet(ASCE 7-16 figures 30.3-1&30.3-2). For buildings exceeding a least horizontal dimension of 60 feet, <br /> further analysis may be required to determine proper Edge Zones. Edge and Corner Zone spacings (Zone 2 & 3, <br /> respectively) apply only to mounts located in those Zones, not to all the mounts supporting the module. For the 45-90 <br /> degree roof pitch range, mount spacings shall be determined utilizing roof zones 1, 2, &3. <br /> EDGE ZONE,' <br /> CORNER ZONE(� CORNER <br /> SEE DETAIL FOR ZONE,' ) <br /> Z MOUNT LOCATION <br /> O SEE DETAIL <br /> Z o INTERIOR ZONE`1 j Lti� FOR MOUNT <br /> LOCATION <br /> WHERE ROOF SLOPE <br /> o EXCEEDS 7 DEGREES, <br /> a THIS AREA SHALL BE �v- <br /> Z TREATED AS ZONE( ) EDGE ZONE(1 INTERIOR <br /> FOR 7 DEGREES OR ZONE(J <br /> D LESS,USE ZONE( <br /> GABLE RIDGE Z <br /> HIP / 2' <br /> K HATCHED AREA <br /> O INTERIOR ZONE l'I <br /> = <br /> INDICATES'a' U •a��\/ x <br /> F j DISTANCE ^�p� <br /> a=0. x( OR <br /> MINIOF OF 3'-0" <br /> WALL "a"OR X-0"MIN <br /> Je <br /> Figure 2: Roof Edge and Corner Zones <br /> Design Responsibility: <br /> These tables are intended to be used under the responsible charge of a registered design professional where required by <br /> the authority having jurisdiction. In all cases,these tables should be used under the direction of a design professional <br /> with sufficient structural engineering knowledge and experience to be able to: <br /> • Evaluate whether these tables are applicable to the project, and <br /> • Understand and determine the appropriate values for all input parameters of these tables. <br /> This letter certifies that the SnapNrack Ultra Rail Flush-Mount Racking System,when installed according to the <br /> limitations of this letter and the attached span tables, is in compliance with the above codes and loading criteria. This <br /> certification excludes 1)evaluation of the building structure to support the loads imposed on the building by the array; <br /> including, but not limited to: strength and deflection of structural framing members,fastening and/or strength of <br /> roofing materials, and/or the effects of snow accumulation on the roof; and 2) excludes effects on building structural <br /> and architectural components. This requires additional knowledge of the building and is outside the scope of the <br /> certification of this racking system. <br /> 1478 Stone Point Drive,Suite 190, Roseville,CA 95661 <br /> 916.961.3960 916.961.3965 www.pzse.com 4/923 <br />