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:1:UNIRAC Unirac Code-Compliant Installation Manual ;SolarMount <br />[3.2.3] Laying out standoffs <br />Standoff# (Figure 10) are used to increase the height,of the <br />array above the surface of the roof. Pair·each standoff with a <br />flashing to seal the lag bolt penetrations to the roof. <br />Use Figure 11 or 12 to locate and mark the location of the <br />standoff lag screw holes within the installation area. <br />Remove the tile or shake underneath each standoff location, <br />exposing the roofing underlayment. Ensure that the standoff <br />base lies flat on the underlayment, but removenomore·mate- <br />tial than required for the flashings to be installed properly. <br />The stando#s,nust befirmly attached to the building structure. <br />1112¥FF' <br />¢43 <br />r., 1 <br />4 1111 E-L <br />Figure 10. Raised.flange stando#(left) <br />and,flat top stando#used in conjunction <br />with an £-foot. <br />Overhang 25% L max -1ZZL Foot spacing/ _] <br />Rail Soan, L 11 <br />. <br />If multiple high-profile rows are to be <br />25% module width installed adjacent to each other, it may noteach end <br />-1 be possible for each row to be cencered above <br />the rafters. Adjust as needed, following the <br />,'y- guidelines ofFig. 12 as closely as possible. <br />i ' 50% module <br />.,4. , width (TYP) <br />1 11 <br />Lower roof edge 1 <br />11 £-- Rafters - <br />(Building:Structure) <br />Note: Modules must be centered symmetrically on the rails <br />(+/2 2.7. If this is not the case, can Iintracfor assistance. <br />Figure 11. Layoutwith rails perpendicular to rqfters.perpendicular to rqfters. <br />Overhang 25% of -g.- CE>·Z 50% B typical - <br />module width (TYP) 1 1 /0.1 1 <br />Installing standoffs: - <br />Drill 3/16 inch pilot holes through the <br />underlayment into the center of the rafters at <br />each standoff location. Securely fasten each <br />standoff to the ra fters with the two 5/16"lag <br />screvvs. <br />Ensure that the standeffs face as shown in <br />Figure 11 or 12. <br />Unirac steel and aluminumtwo-place <br />standoffs f 1-5/8" O.D.) are·designed for <br />collared flashings available from Unirac. <br />Install and seal flashings and standoffs <br />using standard building practices or as the <br />company providing roofing warranty directs. <br />4 <br />r.! 1 141/ <br />Fooppacingl + 1.-6. <br />Nui Spall 'L" <br />IF ./ 1 <br />Lower reet edge I ! Overhang 25% L,max <br />1 2\ 1 Rafters :(Building Structure:) <br />t <br />Note: Mr*#cs must be centeirdsymmetrically on the r·aUs <br />(4·/- 2 4. If thi is not-t7* case, call Untracfor assslance. <br />Figure 12. Layoutwith rails parallel to ra#ers. <br />r- 11 <br />18