Crews Complete the Underground Water Vault Excavation on SE Powell Boulevard -- Crews overseen by Hoffman Construction Company have completed the excavation of a 30-foot wide by 60-foot long space under the westbound lane in the 9700 block of SE Powell Boulevard. Over the next couple months, a 23-foot wide by 40-foot long water vault will be constructed in the excavation’s footprint.
During excavation, engineered shoring was installed to provide safety for workers entering the trench.
During the week of March 24th, crews will build the base pad of the new vault. Rebar will then be placed horizontally inside the base to support and add additional strength to the concrete floor. Crews will next pour the concrete floor, under favorable weather conditions.
The water vault will house complex piping that will connect to the city’s new 25-million gallon underground reservoir atop Kelly Butte.
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