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<br /> <br />;- -... <br />I aJli. ~ <br />I~~, <br />~ <br /> <br />2 x x 6'-0" SIZE TO MATCH <br />TOP CHORD OF PIGGYBACK, <br />ATTACHED TO ONE FACE OF TOP <br />CHORD WITH 2 ROWS OF 10d NAILS <br />SPACED 6" 0, . AND STAGGERED <br /> <br />STANDARD PIGGYBACK <br />TRUSS CONNECTION DETAIL <br /> <br />ST-PIGGV <br /> <br />MiTek Industries, Inc. <br />DECEMBER 2, 2002 <br />Page 1 of 1 <br /> <br />PIGGYBACK TRUSS <br /> <br />ATTACH PIGGYBACK TRUSS <br />TO EACH PURLlN WITH <br />2 - 16d NAILS T ENAILED, <br /> <br />w <br /> <br /> <br />ATTACH EACH PURLlN TO TOP <br />HORD OF BASE TRUSS WITH <br />2 - 16d NAILS, <br /> <br />BASE TRUSS <br /> <br />SPACE PURLlNS ACCORDING TO THE MAXIMUM <br />SPACING ON THE TOP CHORD OF THE BASE <br />TRUSS (SPACING NOT TO EXCEED 24" O,C,), <br />ATTACH EACH PURLlN TO TOP CHORD OF <br />BASE TRUSS WITH 2 - 16d NAILS, <br /> <br />FOR PIGGY BACK TRUSSES WITH SPANS < 12' <br />SCAB MAY BE OMMITED PROVIDED THAT: <br />ROOF SHEATHING TO BE CONTINUOUS OVER JOINT <br />(SHEATHING TO OVERLAP MINIMUM 12" OVER JOINT) <br /> <br />NOTE: <br />A PURLlN TO BE LOCATED <br />AT EACH BASE TRUSS JOINT. <br /> <br />IF NO GAP EXISTS BETWEEN CAP TRUSS AND BASE TRUSS: <br />REPLACE TOE NAILING OF CAP TRUSS TO PURLlNS WITH GUSSETS <br />AS SHOWN, AND APPLY PURLlNS TO LOWER EDGE OF BASE <br />TRUSS TOP CHORD AT RECOMENDED SPACING SHOWN ABOVE, <br /> <br /> <br />6" x 6" x 1/2" PLYWOOD (or 7/16" OSB) <br />GUSSET EACH SIDE AT <br />EACH BASE TRUSS JOINT. <br />ATTACH WITH 3 - 6d NAILS <br />INTO EACH CHORD FROM <br />EACH SIDE (TOTAL - 12 NAILS) <br /> <br /> <br />FOR LARGE CONCENTRATED LOADS APPLIED <br />TO CAP TRUSS REQUIRING A VERTICAL WEB: <br /> <br />VERTICAL WEB TO <br />EXTEND THROUGH <br />BOTTOM CHORD <br />OF PIGGYBACK <br />'---- <br /> <br />1) VERTICAL WEBS OF PIGGYBACK AND BASE TRUSS <br />MUST MATCH IN SIZE, GRADE, AND MUST LINE UP <br />AS SHOWN IN DETAIL. <br />2) VERTICAL WEBS OF PIGGYBACK MUST RUN THROUGH <br />BOTTOM CHORD SO THAT THERE IS FULL WOOD <br />TO WOOD CONTACT BETWEEN WEB OF PIGGYBACK <br />AND THE TOP CHORD OF THE BASE TRUSS, <br />3) CONCENTRATED LOAD MUST BE APPLIED <br />TO BOTH THE PIGGYBACK AND THE BASE TRUSS, <br />4) ATTACH 2 x x 6'-0" SCAB TO EACH FACE OF <br />TRUSS ASSEMBLY WITH 2 ROWS OF 10d NAILS AT <br />3" O,C, STAGGERED, (SIZE AND GRADE TO MATCH <br />VERTICAL WEBS OF PIGGYBACK AND BASE TRUSS.) <br />5) THIS CONNECTION IS ONLY VALID FOR A MAXIMUM c- ~ /' " IJ <br />CONCENTRATED LOAD OF 3700 LBS (@1,15), REVIEW Y\..-.-J' ~ <br />BY A QUALIFIED ENGINEER IS REQUIRED FOR LOADS <br />GREATER THAN 3700 LBS, JUL 2 2 2002 <br /> <br />A WARNING. V.r(fit .alp pa........t.... and RBAD NOTES ON THIS AND RBVBRSI!: SIDE BBFORB USE. <br />OeslQn valid lor use only wnh MlTek connectolS, This design Is based only upon parameters shown, and Is lor an Individual building component to be <br />Installed and loaded vertically, Appllcabllny 01 design paramelers and p,oper Incorporallon 01 component Is responslbllny 01 building deslQner . not truss <br />deslQnel. Bracing shown Is lor lateral support 01 individual web membelS only, Addnlonaltemporary bracing 10 Insure stability during construction Is the <br />responsibility 01 the erector, Addnlonal pe,manent b,aclng 01 the overall structu,e Is Ihe responslbllny 01 the building deslQnel. For general guidance <br />'eQordlng fabrication, qualny control, storage, delivery, erecllon and b,aclng, consun QST-aI Qualny Sfandard, D$B.89 Bracing $pec:lflcaflon, and HIB.91 <br />Handling Inslalllng and Bracing Recommendation available Irom Truss Plate Insmute, 583 O'Ono1,1o Drive, Madison. WI53719, <br /> <br />Mil" <br />MiTek@ <br />