Laserfiche WebLink
oaiaves ii:oo ozos ea2 za23 n000 eac����c rdooi <br /> i�4r. Tiru Tyle� lfarch 3'. 1�95 <br /> Cilp of�verett PuUlic Wm�lts <br /> _2U0 Cedar Slreet <br /> Evere[t,VVA 98201 <br /> Subject: Yfulti-family Residence <br /> 362(Rucl:er Avennc <br /> Lverett. R'A <br /> Dem' Ivf�'. Tyler: <br /> T7iis letter is in response Io yum�request from �ur telephone conversation rn� �[arch 39, 199>, <br /> regarding this projact. I am ihe sfitctw.il engineer l�ired by Ute owner, Ronald E. Tracy, to <br /> provide the stnict�u•ai improvemenis to be implemented cttuiug tlie remo�el of il�is Uuilding. <br /> The general philo••ophy followed iu my poniou of Uie work w�.�to leave die 11d� a�id plaster <br /> walls of tLe upper two stories fo act as the shear walls, as diey have since ihe Uwlding was <br /> constructed. My primary concern�+�as to strengtlicn ihe bottom story so that it wotild no longcr <br /> he the �ve:il:link +n Il�e la�eral f'orce resisting systi.[n for lhis build'wg. ln l:ecpu�o�vitl� tliis <br /> p]�ilosopl�y, die nurdi, sonfli and west wal]s a��e to have plywood or OSB, properiy blocked and <br /> nailed to provide sitfficienl sLear sirengU� to resist tlie. code late�:�l force requiretnents. <br /> 'Ihe west evd ol'il�e st�vchue has tiuther lateral foree needs due to Ihe decks Placed ai tl�e urper <br /> twc> levels. A plywood tloor ctiaplvagm is being provided at each level tu deliver the latei�al <br /> forces [o d�e wesf�vall of the Uuild'u�e. Tlie gu:u�d rails for each decl: have also been enlisted to <br /> stiffen Uie dn•ee sides oF the two decks by cladd'uig fl�em witl�pl}rn'ood so as to provide :u� <br /> n�fonnal wood lramed motnent frame. 11�e redundancy of 4�ese two systems should serve Ute <br /> �lecb_s well duruig wind ar e:u�diquake even�s. <br /> Following is a lisc of the specifications for d�e conh.ictor to fnllow to implement tlie systent <br /> desctibed above: � <br /> 1. North ��'all of tLe bxsetne»f; 1/2" CDX plywood on tlie inside tiice of the portions ut�tlte <br /> sriid wall Uet�veen Qie 6x6 posts, nailed n�ith 8d at <.," o.c. al cdges a�id 12" o.c. far Ilie field(260 <br /> #1/R.). Studs :uid plales adjacent to existittg 6x� fi'amu�g lo Lave 16d at S" u.c. Provide 5/3" <br /> expansion bolts fi•om the sill plate to Ihu top of concrete at 4' o.c. Blocking shull be provided at <br /> all sl�eet edges. <br /> 2. SuutL wall of the bxsewent; same as for ftem kl, except nailing to Uc 3d al:4" o.c. at sheet <br /> edses (330 #/fi.l. <br /> 3. West wall of the basemen!; 1/2" Cllk pl}�vood on ihe inside face of lhe wall, and 7/l6" <br /> USB on ihe outside face. Nail�vilh 3d at 6" o.c. at edges and 13° o.c. for U�e lield. Block all <br /> edges. Note: where pl}�vood has becn installed without edge Ulocliing. Prot'�da 26 ga• x '° wide <br /> z:ilvanired continuous strips over joinls i'eyuiring blocking, attach�cl witl� 1�ga•��P�> °�} ��� <br /> o_o.eo.ck.side off�"�jo�. Typical sribstihitioit ti�r Utis conditiou on all�vall�. <br /> 4. Ontdonr decks m� west (nce of buildine; sheath floor�vi(t� 3/4" CD:i pl}Rvood, ttnUlocked. <br /> \:iil wiU� l Od at G" u.c. at s�tppurle�l edges and 12" u.c. at ficld locations. At Qie west edgc of <br />