Line construction: Emergency repair of failed electrical vault walls

construction equipment Oldcastle Precast

Line construction: In just four days, Spokane-based Oldcastle Precast manufactured and shipped custom precast concrete components to repair failed walls of major electrical vaults that were discovered during Spokane, Washington’s current major street reconstruction and utility upgrade project.

During street reconstruction and utility upgrades to two major arterials in downtown Spokane, Washington, a major electrical vault was exposed and it was discovered that the walls had failed. The utility company, Avista Electric, immediately contacted Coffman Engineers for a rapid repair solution.

Time was of the essence, typical demolition and rebuild were out of the question. Every day lost extended the reconstruction project timetable, which was already on a day-by-day critical path schedule.

Recognizing the need for an effective, rapid repair method, Coffman Engineers of Spokane, Wash. contacted Oldcastle Precast to see if a precast solution could be done quickly. In a collaborative effort, Coffman Engineering designed an innovative system using new precast walls that would be placed inboard of the existing failed walls, with small closure pours, which would tie the new walls into the existing structure, to carry the load. This approach would save days from alternate solutions.

Oldcastle Precast received the approved drawings late Friday, September 2, 2016 and by Wednesday, September 7th, three “T” shaped precast elements, 6-foot-wide by 10-inches-thick by 9-foot-10-inches- tall, were cast and delivered to the site at 8:00AM Thursday morning.

“Amazing speed for a highly engineered custom project,” remarked Chuck Prussack, P.E. of Oldcastle Precast. “Precast concrete components met the rapid timeline the contractor needed, avoided delay of the project, and all pieces fit perfectly!”

Coffman Engineers, Inc. Melissa Verwest, P.E. stated, “The precast pieces lowered in flawlessly! I am feeling better already just having those walls in front of the old failing walls. All three old retaining walls show significant cracking in the tension face of the wall. We also noted minimal reinforcing in the existing wall. I don't think we are going to have this type of problem with the new precast sections! Great work by the Oldcastle Precast team.”

“Everyone involved all hit it out of the park! It was a total pleasure working with this team – Thank you to everyone for your hard work,” said Paul Clary, Clearwater Construction & Management LLC.

For more information about Oldcastle Precast or other products, click here to go to Utility Products’ Buyers Guide.

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