6326 EVERGREEN WAY 2023-06-08 - Laserfiche WebLink

civil structures January 11,2016 Shayne Hedahl C/7`'y Special Interest Autobody RE OF 6410 Evergreen � �E® o 'E` r 98203 Re: Structural Assessment of Garage Addition and Carports Special Interest Autobody Everett,WA Dear Shayne, At your request,DCG provided a structural assessment of an existing garage addition and four carports. The reason for the assessment is that these structures were never permitted to be constructed and you are in the process of correcting that with the City of Everett. DCG provided an on-site review of these structures on December 22nd. The following represents our assessment of the as-built structures: Garage Addition The addition is a 23ft deep x 50ft wide wood structure,built in 2008,which is an extension to the original 100ft x 50ft pre-fabricated,steel garage structure.The addition has a unique foundation and framed wall adjacent to the original structure and,therefore,does not rely on the original structural for support.Select holes in the interior paneling were provided to allow a visual observation of the framing,resulting in the following understanding of the structure: • The foundation was constructed with an 8"stem wall that extends roughly 4"above the interior slab which is sloped to an interior trench drain. The footings could not be observed as the site is paved around the structure. • The walls are 2x6 studs,approximately 10ft tall,with%"OSB sheathing on the exterior and 5/8"gypsum wall board on the inside. • The wall plates are bolted to the stem wall with 34"anchors and 2"square seismic washers. • The roof is constructed of pre-manufactured trusses that span the width of the building(50ft)with a center glu-lam beam at the center.The glu-lam beam appears to be a 5-1/8x19-1/2 size. This beam is let into the wall and is supported by a 6x6 post with king studs on each side.A calculation of this beam (enclosed)indicates that this beam is properly sized. The general construction of the addition appears to meet the requirements that would have been required if this structure was permitted when it was constructed. Carports There are four independent carports of various size on the site.One is a 3-car width,two are 2-car width and then a single car width. Each of these carports appears to bb a designed kit constructed of 2"aluminum posts and trusses with a light gage roof.The bottom rails of the carports are bolted to the asphalt pavement with 34"anchors at approximately 4ft on-center. As these carports are purchased kits,it is assumed that they would be designed for their current use,but no engineering has or can be performed to verify this fact. The bolting of the base rail would appear to be consistent with code requirements. Mount Vernon Office Lake Forest Park Office Whidbey Island Office 2124 Riverside Drive,Suite 211 15029 Bothell Way NE,Suite 600 PO Box 1132 , Mount Vernon,WA 98273 Lake Forest Park,WA 98155 Freeland,WA 98249 Tel 360.899.1110 Tel 206.523.0024 Tel 360.331.4131