Stan Kaiser, project manager on the garage for FCI Constructors Inc., said if work goes smoothly, the pile driving will be done by Tuesday evening, ending the project's noisiest phase.
said that's the area where the piles will go deepest, as the lowest level of the garage there will sit more than 14 feet below grade.
The piles, according to Kaiser
, are intended to prevent soil from collapsing as workers dig out the garage's foundation.
As they dig, workers will put lengths of timber between the steel beams, to serve as braces.
"There's really no quiet way to drive a pile," Kaiser
noted that the four partners constructing the parking garage and library one block to the south have decided to use a less noisy, more expensive method called screw piles in securing the structures' foundations.
"Other than the sound of the excavator, you don't hear much with screw piles," Kaiser
But according to Kaiser
, the city looked into other options before beginning construction and found them infeasible.
One method, which involves injecting long seams of grout into the ground to secure it, was impractical because it interfered with neighboring utility lines.
"We weighed all of that, and you'd have to get easements from every adjacent landowner," Kaiser