PROJECTS

City of Everett Seismic Assessment

City of Everett Public Works | Everett, WA

  • Client
  • City of Everett Public Works
  • Location
  • Everett, WA

Project Overview

In 2013, the City of Everett Public Works department hired OAC to carry out a detailed seismic assessment of two existing buildings on their campus: Building 1, a 40-year old concrete tilt-up building housing Public Works and the Everett Building Department, and Building 4, a 25 year-old pre-fabricated steel building housing shops, maintenance equipment and vehicles. Building 1 was known to have notable deterioration to its exterior concrete walls.

Prior seismic screening by another consultant identified a substantial list of seismic deficiencies at Buildings 1 and 4. Due to the construction type and vintage, a list of unknowns related to the composition of both structures was generated. OAC’s role was to carry out the next phase of Seismic Assessment – which was comprised of a Tier 2 ASCE 3103 Seismic Evaluation and a preliminary cost estimating, as the City was interested in comparing estimated costs for replacement to estimated costs for upgrade.

In order to “fill in the blanks” and piece together information necessary to calculate seismic capacities, OAC first carried out a detailed investigation of both structures. The investigation consisted of careful visual documentation and destructive testing. Destructive testing was used to identify component type, size and connections for existing lateral force resisting elements such as roof diaphragms, concrete wall anchorage, tension bracing and moment frames.

Following the investigation, our structural engineers performed structural calculations per ASCE 3103 to generate a detailed preliminary scope of remediation for each building. OAC’s construction management department assisted by providing ROM costs for the remediation scope, as well as for replacing each building with a new facility. Replacement costs included considerations of equipment movement, storage, personnel relocation and rent. The information is currently being studied by the City of Everett to facilitate planning regarding these structures and the greater campus.

Project Photos

OAC Feed

Blog Posts

Jeff Jurgensen & Jonathan Miller Receive Community Leadership Awards

Congratulations to Jeff Jurgensen and Jonathan Miller for receiving Community … Read more >

Blog Posts

OAC's Constructability Review

One of the biggest positive impacts OAC can have for … Read more >

People

Damon Gardella

PRACTICE AREAS > Project & construction management > Program management … Read more >

People

Laura DeGooyer

PRACTICE AREAS > Project management > Construction management > Program … Read more >

People

Joshua Cloud

PRACTICE AREAS > Project & construction management > Lean construction … Read more >

Blog Posts

OAC’s Grace Wong coauthors “Moisture Analysis in Unconditioned Concrete”

OAC’s very own Grace Wong, PE, AIA, LEED AP, coauthored … Read more >

Construction Management. Architecture. Engineering.

OAC has a history of success with specialized design and construction because we love what we do. We serve our clients as collaborators, and we design and manage projects that improve where people live, work, learn and play. Because of this, we’ve gathered a superlative staff of professionals who share our core values, and our vision – do what we love in the service of people who love what we do.