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1�'esr � ' <br /> Consr ' <br /> ,. <br /> STRUCTURAL' � � .: ��� �� � <br /> FNGINEEI7ING.INC. <br /> 1097<IAok�tep SpaotlwBy,Su�ie A M�MitlP9 Wp 99275 �'bn�r �<251 J��P999 Fa� Np51����A96fi E��� ema'�`wc5��el \Y1'J1V\YCSE NE7 <br /> April 21, 2011 <br /> Connell Design I� � ���-C'�� <br /> 22002 64'"Avenue W. Suile 2C <br /> Mountlake Terrace, WA 98043 <br /> Atlention: Alan Lambert <br /> Subject: Giggling Guesl-Freeway Cenler TI <br /> 1327 112'h Sireet SE <br /> Eve�ett,WA <br /> WCSE Project No:W3321 <br /> Dear Mr. Lambert: <br /> This letler is in response to the slruclural concerns and retrofil requirements for Ihe addition of a 3'•0"man•door <br /> to Ihe above referenced project. Based on lhe TI plans lor ihe building ihat you supplied our oflice, ihe <br /> proposed new 3'-0"man door will be Iccaled in Iho approximale center ol the North 64'-0"long exlerior CMU <br /> wall of ihe building (Grid Line �F) on the original structural drawings). <br /> The exisling wall is a lully grouted 8-inch thick CMU wall reinlorced with q5 verlical bars a132-iches on cenler <br /> and N5 hor',zontal bars at 48-inches on center. The addition ol Ihe man-door will not significanlly alfecl ihe <br /> shear walls a� 'he revised calculated unit shear on ihe wall line is still below the allowable shear siress,and <br /> Ihere is no calculated residual uplift lorce on Ihe iwo panels. <br /> Due to Ihe vertical bars being spaced at 32-inches on cenler, no more ihan Iwo vertical bars will be cul with lhe <br /> addition ol the man-door. Calculations show Ihe adjacent verlical bars will have enough capacily to resolve the <br /> additional out-ol-plane lorce trom the iribulary area over ihe door where Ihe verlical bars have baen cut and no <br /> longer exlend irom ihe foundation to ihe roo(diaphragm. <br /> The vertical loading on ihe wall is minimal as Ihe roo(Iraming for tho existing slructure runs parallel wilh Ihe <br /> Norih exterior wall. The proposed location of the man-door is away from ihe only conceniraled load (irom ihe <br /> joisl girder along Grid Line{3)), on the wall,and due to Ihe arching nature ol CMU only a small portion ol Ihe <br /> wall directty over Ihe new cpening will need lo be supported vertically. In order to support ihe CMU wall directly <br /> above Ihe new door, and facilitale the altachment ol ihe new door trame to the sirucWre, Ihe opening should be <br /> wrapped with angle iron ihat is welded togelher and attached to ihe sides oi ihe opening per the attached <br /> details. ,, I <br /> If you have any furiher queslions please conlact our ollice. �V 4 z� > > <br /> Thank you, 1JQ✓I � ��. M�CA � <br /> ��C��1CP�II y,/� �F�I .YV <br /> ,� .:. �2 O <br /> � 'r,, � y�� ry �� <br /> JEfemy McCandless, PE , , - <br /> West Coast Siructural Engineering Inc. /� �' <br /> l� ^ un <br /> %A� 44253 �� <br /> "�1 � p9'i6T�� .�� <br /> rCJ � �) <br /> �UNAI �'- <br />