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411 • <br /> DHS ENGINEER ' <br /> 1201 3"'Avenue,Suite 2200,Seat - ' .e <br /> Unite States of America i ©fLJf/: <br /> (206)734 585ll <br /> �" <br /> February 25,2022 MAR 0 7 2022 <br /> CITY OF EVERETT <br /> Project: Renovation and Remodeling for a New Spa Permit Service S <br /> 20 SW Everett Mall,Suite 8 <br /> Everett,WA 98204 <br /> Subject: Post Construction Permitting <br /> Cc: Xin Li(Business Owner),(718)799-3367 <br /> Mike Qiu(Contractor),(206)519-8888,mrgconstructionllc(c gmail.com <br /> To Whom It May Concern: <br /> As per the request of the business owner,Ms Xin Li,and the contractor,Mike Qiu,a structural site observation was <br /> conducted on February 12,2022,to the above referenced newly constructed spa facility. It is our understanding that <br /> construction was completed by a different contractor without a building permit. The business owner is currently in <br /> the process of securing a building permit for the current as-built conditions. It is also our understanding that the as- <br /> built documentations were already completed. The only remaining item that requires our assistance is the <br /> engineering justification for the 8 feet tall free standing 2x4 stud framed participation walls. <br /> Based on our evaluation of the as-built conditions,the construction of the partition walls followed Section 2304 of <br /> 2018 IBC where general wood framing nailing and construction methods are specified. Due to the limited size of <br /> the rooms the participation walls formed,these partition walls are able to laterally support each other. The longest <br /> partition walls without any top lateral supports are approximately 12'-10". Based on our engineering assessment, <br /> these walls are able to span horizontally with the double top plates without any lateral bracing on the top of the <br /> partitions to resist the code required 5 psf minimum lateral pressure. Attached are our calculations to demonstrate <br /> the adequacy of the current conditions. In addition,it is our understanding that the wood sill plate was anchored to <br /> the existing concrete slab on grade with concrete nail type of expansion anchors spaced at a maximum of 4'-0"that <br /> is commonly used for this type of applications. <br /> Based on all above,we have concluded that the current as-bult conditions meet and/or exceed the code minimum <br /> structural requirements for the facility. Should you have any questions concerning this memo,please do not hesitate <br /> to call or email me at(206)734-5858 and dihong.shao@dhsengineers.com. <br /> Very Truly Yours <br /> Q�•z,o -- f�1,. e., t',r <br /> vs <br /> C• i <br /> 401, <br /> 4 ` rx <br /> :'j 32:.,2 ,� <br /> S/oNAL v.• <br /> Dihong Shao, SE <br /> 11� <br />