Location: Long Beach, CA
Project Partner: Steve P. Rados
Challenge: Construct water-tight shoring for the new Long Beach Main Pumping Plant.
Overview: Condon-Johnson was contracted to design and construct water-tight shoring for the new subterranean pump station.
Results: Condon-Johnson utilized internally braced, soil-mixed shoring and a tied-down, jet grout bottom seal to provide completely water-tight shoring that allowed for excavation to advance approximately 38 feet below the water table without the need for dewatering. Triple-axis soil mixing was performed with an ABI 18-24. Jet grouting and the tiedowns were drilled with a Klemm 3012.