The driver and washed stone are in place for creating the rammed aggregate piers.
During the last few weeks, general contractor Hutter Construction has made significant progress on the beginnings of Lincoln’s community center. Demolition is complete and Hutter is moving forward with site work and ground improvements using rammed aggregate piers.
In thus technique, a driver pounds washed stone down 6–12 feet and then compacts it into a pier. There will be 279 of these piers along the outline of the building and under the interior about every 8–10 feet. This will create a stiffened mass of soil and a solid foundation for the building.
The subcontractor has begun compaction testing and mobilization to identify the rammed aggregate pier sites. As piers are installed, the contractor will begin preparing for footings in sequence. Excavation will continue into the week of November 17, with footing installation beginning shortly thereafter, marking the beginning of foundation work for the new community center. By late November, the foundation work will progress as footings are set, and the first walls begin to rise. Moving into early December, crews will continue building out the foundation with additional footings and walls, further shaping the structure.
Installation of the rammed aggregate piers will generate vibrations and noise on the project site, so these operations only occur during the times allowed by the Town of Lincoln and the Building Department.
The next Community Center Building Committee meeting is scheduled for Wednesday, Nov. 19 in the Donaldson Roon and on Zoom. See the CCBC website for more information and images.
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