11401 3RD AVE SE 2022-03-03 - Laserfiche WebLink

Permit#: 6-016 Site Address: Mil1 3RD AVE SE BLDG G Owner: RAILSPLITTER PRESERVE LLC civil&structural Tenant: NORTH CREEK APTS y��NEE, engineering&plann! App.Date: 6/15/2020 THESE DOCUME��NTS RA1�EVvT� Proposed Use: MULTI FAMILY F(APPROVED ' _ Description: North Creek Apartments-Are damage PUBLIC WORK ,MECHANICAL,FIRE STRUCTURAL 0 repairs SUPPRESSION,ELECTRICAL OR PLUMBING PERMITS Reviewed By: �+O` Date: 12-0233 Project: North Creek Apartments Fire Damage Office Set Job Site Set Fire/Planning Set Location: 114013`d Ave SE, Bldg G, Everett,WA 982..,0- CG Project: 20191.10 Report: 1 Client:ServPro General Contractor: David Carroll, ServPro Field Rep: Mike Maechler, PE,SE i - PURPOSE AND SCOPE LVI EWES FOR PrPmiT A field representative of CG Engineering was on site on May 21st,2020 to observe and evaluate a deck and exterior wall that had been damaged in a recent fire to apartment building G in the North Creek Apartments complex.The fire started at the exterior second-story deck of unit G3 and spread to the adjacent exterior wall from which it is attached.At the time of the site visit,the contractor had removed sections of ceiling and wall drywall at the first floor to expose the floor joists and sheathing above and the exterior wall framing immediately adjacent to the deck for observation.Additionally, the siding and sheathing was removed from an existing privacy wall north of the deck so the wall studs could be observed.A structural repair sketches (SK-1 and SK-2) are included at the end of this report. EXISTING BUILDING The existing building is a two-story,wood framed, multi-family building.The roof was not observed but is likely framed with wood trusses.The second floor and deck are framed with wood joists, beams,and columns.The walls are framed with wood studs and sheathed with plywood siding.The foundation system was not observed but is likely composed of concrete stem walls and interior pad footings. OBSERVATIONS AND RECOMMENDATIONS @Itze/in 1. Deck—The entirety of the existing deck framing was observed to be significantly char a structurally compromised. We recommend that the deck joists, rim beams, columnsd "� 0/ sheathing be replaced with new members of like kind. It was observed on site that th � 202® joists are cantilevered floor joists that span back into the unit to an interior bearing waecTiek'f� cantilevered portion of the existing joists shall be cut off and the remaining portion supporti et fr . j. the floor above shall be sistered to the new full-length joists. Refer to SK-1 included at the end Ce$ of this report. . Second oor 'lywood— e interior loor plywood imme•lately adjacen o t e dec appeared to be damaged by smoke.We recommend cutting out the first 4 feet of plywood inside the unit for the full length of the deck and replacing with like kind. Refer to SK-1. Reconstruct the floor assembly as necessary to match the existing assembly.This is acceptable per IEBC 601.2. 3. East Exterior Wall—Charring was observed in the siding of the east exterior wall under the deck. The wall was exposed from the interior and the framing appeared to be undamaged. If evidence of charring or smoke damage is discovered from the exterior during demo,CG Engineering shall be contacted for further inspection.The new exterior wall assembly shall consist of 2x4 studs at 16"with double top plate and single bottom plate.The interior surface shall consist 5/8" gypsum fastened with 2-1/2" drywall screws at 12" on center.The exterior surface shall consist of 3/8"wood structural panels fastened with 6d common nails at 12" on center in the field and APPROVED .ti=zdo PLANNING & COMMUNi ry Edmonds,WA 98020 DEVELOPMENT DEPT ph.425.778.8500 j f.425.778.5536 / j www.cgengineering.com