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�i -\._ Structural Design Associates <br /> i r.; Engineering Structures to Last <br /> February 2,2018 <br /> Client: Andrew Echelbarger <br /> Subject: Building Official Comments for Plan Check No. B 1711-024 <br /> Job Address: 1913 Hoyt Ave.C&D <br /> SDA Job No.7976 <br /> To whom this may concern: <br /> At the request of Andrew Echelbarger,this office reviewed the subject project to answer the building official <br /> comments issued November 28th 2017. <br /> Following is our response to the structural comments: <br /> 1) ASCE 7-10,Sec 12.2.5.6b states ordinary steel moment frames(OSMF)are permitted for Seismic Design <br /> Category D in light frame construction if the following conditions are met: <br /> a. The structural height(defined in Sec 11.2)shall not exceed 35 feet. <br /> b. The roof and floor dead load shall not exceed 35 pounds per square foot. <br /> c. The exterior wall dead load shall not exceed 20 pounds per square foot. <br /> The structural height of the house is 32 feet and the floorlroof/wall dead loads do not exceed the <br /> requirements outlined above;therefore,a OSMF is allowed for this project; <br /> 2) The exception outlined in ASCE 7-10,Sec 12.23.1 states detached one-and two-family dwellings of light <br /> framed construction do not need to comply with the requirements of this section;therefore,the forces <br /> transferred from the upper system to the lower system are not increased by the response modification <br /> coefficient ratio; <br /> 545,,, h c.,,, ,)„ Nri:,,,d J. 4) ' <br /> 3) See attached calculations(issued 02-02-2018). p' -4x ,�„,s+e4 cd <br /> -�-tnc.. a��i;ur-F-tc3�_ <br /> 4) See attached calculations and revised drawings(issued 02-02-2018); 4--- Shy' <br /> 5) See attached calculations and revised drawings(issued 02-02-2018); <br /> 6) See attached calculations and revised drawings(issued 02-02-2018); <br /> �1x. <br /> 7) See attached calculations(issued 02-02-2018); wh' 1r`1&-? , <br /> �`' -- COVj <br /> 8) See attached calculations and revised drawings(issued 02-02-2018); W�� ... + (of WAS,., C,eN.' <br /> tiop :. <br /> 9) See attached calculations and revised drawings(issued 02-02-2018)V '" - 1;4 0 ' <br /> 1-Guardrails and guardrail connections by others. ���en.re. _( .� Q.' <br /> ,` �# <br /> Please contact thisofficewith ii, <br /> ° ^t ,p 34 <br /> c w t any questions regarding this letter. fiCj ��; a' ; <br /> si ` <br /> Sincerely, ' O I ' <br /> r FEB 0 2 2018 <br /> Jasper Baarbe,E.I.T. Chris Covington,P.E. <br /> Structural Design Associates <br /> 2802 Rockefeller Ave, Everett, WA 98201 <br /> Ph: 425-339-0293 Fax: 425-252-09 1 6 www.strucdes.com <br />