Welcome, sign in or click here to subscribe.
Login: Password:
     


 

 

 

  Construction

Email to a friend   Print   Comment   Reprints   Add to myDJC   Adjust font size

April 28, 2016

Public works: Infrastructure

Photo courtesy of WACA
Overlake Village’s south detention vault sits beneath a parking lot.

Overlake Village south detention vault

Location: Redmond

Owner/developer: City of Redmond

Team: Goodfellow Bros., general contractor; Franklin Pacific Construction, concrete contractor; Otak, architect; HDR Engineering, structural engineer; CalPortland, ready-mix supplier

Overlake Village is home to the largest stormwater detention vault in Washington following the completion of the south detention vault last year.

The 6.5 million-gallon vault is 533 feet long and 123 feet wide — bigger than a football field — and has an average clear height of 17 feet.

The structural system is made of cast-in-place concrete floor foundation slab, concrete perimeter and separation walls, columns, beams, precast hollow-core slabs, and CIP topping slab.

Several construction alternatives were evaluated by the design team and the client. The city of Redmond decided on two cast-in-place concrete rectangular cells for many reasons, including leakage and seismic design.

The substructure is buried approximately 4 feet below grade, beneath a parking lot that will later be converted to a plaza.

Some of the major challenges for the project included the constrained site, permanent structural support system, concrete shrinkage and leakage control, and settlements and differential settlements during and after construction.





comments powered by Disqus
 

Other Stories:





    Need to manage your next solicitation? Try SolicitBid, now free for public agencies.

--