8214 XAVIER WAY 2016-01-01 MF Import

Bracing Wood Trusses Commentary and Recommendations T�uswal supplles its tabncotors, wFw �.: 7,�swal meta � cqnnecfors. wan compiete enyineenrg :upport. i!- _��des rt�vitluol truss deslgns. recommendotions al er.-; - �ing and Iruss appliCation practices. pwducf festinp •:r�' :>vals, antl @HOftS 10 C011hf1U011y upQfdtlO quOldy Ofld �•" .vh110 h0lDing Ouf fObflCatOfS TOINOIfI Q COmpel�' �n. Th2 TN55 Piate institute's "Design SpeaM1catwns tai t�� .' �� N�a1e Connected Wood Trusses" are used os trr �� 'ur the design ot these indivitlual frusses as structurai cce� ,. ,� <�.us. Regaraiess ot how carefully wood trusses are designed anu labncated. the final erection and bracing of a roof Or floor Sy51CfT1 i5 CfIfiCOI. If i5 �l fhi5 CfIfiCOI S1O�B O� COnSINCfiOf1 �h�t many sigrrficant desgn assumptions such as proper bracing are elfher lulftlled or ignored. If ignored. the consequences may be � collopse of the siruciure. � fie tt�eory of bracing Is to apply sumclent support at right anq les to the plane of the huss fo holtl every frusa member �� the pos�rypn oawmetl for if In design, fie bulld�r or �r�oMon ooMrootor it, however, responsible lor wood tiuu handllnp antl for proper temporary antl pertnanent �- bracing. He musf ass�ire thot irusses are not structurally ]amaqed tlurinq erectlon and ihat they are malnfalned in aliqnment berore, durinq, and alter Installatlon. TemporaN and permanunt bracing maY lollow, but nof neceswrlly be Ilmlted to Me bullding designers framinp plan which should bs the wuros of truu braclnp and bulldlnq connecHon detalls. Typieal Trutt braelnp Racommondation' CONRMrt�uS bI8i01 Ot0^��9Of �BOuu00 lpo��otmnsaei+�n) F1pw�C �— Daqonni brocng Rpw�s f Ipur� A FIpW�� snw:rMo comprestan web - sbo+q a vx4ca C0111it4:0u11Oier�l IXOCB � �- �� 4�c�t.� )t{{ + , ••� oie � ��'a ood�slb�e weopavxne a�noimo.wnent cnC2� "/II o�NPW�M1a q uoWo!�mateW 2019et irv y! tS�,01L i ��. � 7 A � • ' ' F • : "Ceirp 1 . i .% � , 1.. Carpe�uon weo�� wi«� atl onr dM• � ComR.,iou� b�aa dx+q �� .,a, w� o«mi� n�wa wnr+o d a weo mBTDBIi OI fM SaT� ��M (5w Fpum A antl e la Giopond ax�a.i F�aur.c \ eeo,.y�s��+ssas It U neomm�ndod by iR Mat �ncHon broclrp W appll�d as aac� huu Ic Plac�d in po�itlon The tlesign of wood irusses in accordance wiih TPI Cesign criter�a assumes: 1. Truss members are initiolly straighf, undorm in cross setliort ontl urntorm in design properties. 2Jrusses are plane strucWral components. in.talled vertlCally. bracetl to prevent lateral movement. and parailel to each Other ot the design spacing. J.Truss members ore pinned a� joints for tlelerminotion ol axial forces only. �. There is Conhnuity of chord members at joints for tlefermination ot moment stresses. S.Compresslon members are laterolly resfralned a1 specifiC loca- tions or intervais. 6.SuperimpOsed tlead or live loads act verticallV. wifW IOOtls are opplietl normal to fhe planeof the top chortl. antl corxentroted loatls are appiietl at a po�nl. 7.In adtldion to the lateral braang speclfietl bV fhe fruss desipner. ihe butlding aesigner wdi speary sutticienf bracing at nghf angles to the plane ot the truss to hold every truss memDer in the posi- fion assumed tor If in tlesign 6.The building tlesigner (not the truss tlesgner) will speciry suffi- cient brocmg and connectwns to wdhstand laferal loading ot the entrte structure. ' These tletails and much ol the tezf are excerpts trom the TPI pubiicauon "&acinqWoodTruwa:Comm�MaryandR�eem� mondatloni' For mo�e speCific mtormahon if is recommendetl that you contoct iPl or Your locanruss fabncator for a copY al this important documeni. :.� v� 17