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t <br /> r <br /> FEBRUARY 2015 STANDARD PIGGYBACK PIGGY-ALT-B <br /> TRUSS CONNECTION DETAIL (ASCE 7-10) <br /> 2 X X 6'-0"SCABS,SIZE AND GRADE TO Page 1 of 1 MATCH TOP CHORD OF PIGGYBACK TRUSS: y� <br /> ATTACH TO EACH SIDE,CENTERED ON • MAXIMUM WIND SPEED=REFER TO NOTES EELOW <br /> INTERSECTION BETWEEN PIGGYBACK AND MEAN ROOFING=T=O.FEET <br /> SUPPORTING TRUSS,WITH(2)ROWS OF CAXTRUSS SPACING=24"o.C. <br /> 1 Od(0.131"X 3")NAILS I@ 6"OC.REFER EXPOSURE B or ATEGORY II CLING <br /> TO NOTES".BELOW FOR ADDITIONAL ASCE 7-10 <br /> INFORMATION DETAIL IS NOTApPLJCABLE FOR TRUSSES <br /> TRANSFERING DRAG LOADS(SHEAR TRUSSES), <br /> ADDITIONAL CONSIDERATIONS BY BUILDING <br /> DESIGNER ARE REQUIRED.. <br /> PIGGYBACK TRUSS DURATION OF LOAD INCREASE:1.60 <br /> i (REFER TO TRUSS DESIGN DRAWING) <br /> • 1/B"GAP <br /> ' i is(2) <br /> 1/4"GAP • <br /> • <br /> ---�� <br /> ATTACH PIGGYBACK TRUSS <br /> 0-1-14 %" % TO EACH PURLIN WITH 2-16d(0.131"X 3E')NAILS TOE-NAILED, <br /> SUPPORTING TRUSS <br /> - \(REFER TO TRUSS DESIGN DRAWING) <br /> / <br /> PURLINS AT EACH SUPPORTING TRUSS JOINT AND A MAXIMUM 24"O.C. <br /> UNLESS SPECIFIED CLOSER ON TRUSS DESIGN DRAWING.CONNECT EACH <br /> PURLIN TO SUPPORTING TRUSS WITH 2-16d(0.131"X 3.5")NAILS EACH. <br /> *-*(1) <br /> **NOTES <br /> (1)SCABS.MAY BE OMITTED PROVIDED THE ROOF WOOD STRUCTURAL SHEATHING IS CONTINUOUS OVER THE INTERSECTION BETWEEN THE PIGGYBACK AND <br /> SUPPORTING TRUSS BY AT LEAST 1 FT.ON BOTH SIDES OF THE JOINT,AND: <br /> • <br /> A WIND SPEED.OF.T15 MPE:JOR LESS FOR ANY PIGGYBACK SPAN,OR <br /> B.WND SPEEC7Q .116,MPH TO 160 MPH WITH A MAXIMUM <br /> PIGGYBACK'SPAN OF 12'fl. <br /> (2)FOR WIND SPEEDS BETWEEN 12B AND 160 MPH,ATTACH 9'k9 7/1.6•24/16 SPAN RATED OSB OR 1/2"32/16 SPAN RATED PLYWOOD GUSSETS TO EACH SIDE OF THE TRIi6SESAT 48"OC,MAX,WITH 3-Sd(0.113'X2")NAILS=INTO EACH CHORD FROM EACH SIDE(TOTAL-12 NAILS PER PAIR OF GUSSETS).MINIMUM OF TWO(2)PAIRS OF GUSSETS REQUIRED REGARDLESS OF SPAN. <br /> • <br /> -..,,:06.. . * <br /> y.:� s <br /> I FOR LARGE CONCENTRATED LOADS APPLIED • <br /> :wtr.tp <br /> TO PIGGYBACK TRUSS REQUIRING A VERTICAL WEB: * i\. %* . <br /> • <br /> II 1)VERTICAL WEBS OF PIGGYBACK AND SUPPORTING TRUSS e• Riss4!R'...f <br /> VERTICAL WEB TO MUST MATCH IN SIZE,GRADE AND.MUST UNE UP AS SHOWN > . <br /> EXTEND.THROUGH lKDETAIL > * a�afisrt ske*3ws�:// <br /> BOTTOM CHORD 2) ATTACH 2 x x 4'-0"SCAB EACH FACE OF PIGGYBACK AND J R <br /> OF PIGGYBACK SUPPORTIN TRUSS WITH 2 ROWS OF loll(R,131'X 3")NAILS `sty}w fidri <br /> SPACES]4"O,C.FROM EACH FACE. (S�AND GRADE OF SCABS �� ! <br /> AI TO MATCH VERTICAL WEBS OF PIGGYBACK AND SUPPORTING *•ks�f~` .i'" <br /> �__ TRUSS AND MUST BE MINIMUM 2X4).,: "���444 <br /> .r 3) THIS CONNECTION IS ONLYYyp,LE FORA MAXIMUM CONCENTRATEE ‘Ik‘ <br /> 9 LOAD OF4000LBS(©L15). RE VIEW BYAQUALIFIED ENGINEER ISRE 2/19/2015 <br /> S. <br /> 4) FOR PIGGYBACK TRUSSES CARUIRED FOR LOADS RYING GIRD)�THAN 4000�LOADS,THE NUMBER <br /> I OF PLYS OF PIGGYBACK TRUSS MUST MATCH THE NUMBER OF PLYS <br /> OF THE SUPPORTING TRUSS.- <br /> 5) BOTH THE PIGGYBACK AND SUPPORTING TRUSS MUST BE DESIGNED12 <br /> } <br /> TO SUPPORT THE CONCENTRATEDLOAD(S). <br /> TI <br /> `1AT1kSa lrp ' EVGAVEERNG LLC + <br /> - 1'.f_• �G <br /> r <br /> f,t'• <br />