12/23/2025
BTL Engineering was proud to partner on the exciting 18800 Front Street construction project in downtown Poulsbo, WA with Chinook Contractors and Wattenbarger Architects. The project made up of a full renovation of an existing 3-story early 1900’s building which entailed full lateral and seismic upgrades plus framing upgrades to address deficiencies and change of occupancy. An additional story was added to the southern portion of the building that would incorporate commercial space and a large outdoor deck.
Phase 2 of the project included a new 3-story addition with one and a half levels of parking and wood-framed apartments. The transfer deck consisted of a concrete filled metal deck and steel beams with welded headed studs to create efficient beam sizes by utilizing composite action. No PT slabs were used due to site constraints. A concrete buttress wall design was provided between the Phase 1 and Phase 2 foundation to resist surcharge loads and the stepping site topography.