Magco was the drilled shaft subcontractor for Hansel Phelps Construction on two separate contracts on the Terminal 4 Project at the Phoenix Sky Harbour Airport. In this very nicely written article, the numerous material, equipment, logistical and other challenges on the project are described, including fighting the sand, gravel and cobbles (known locally as the SGC) from the Salt River. Pockets of Boulders were also encountered along with relatively shallow groundwater. Perhaps one of the biggest challenges was drilling and constructing the shafts with limited space and overhead clearance. I should also acknowledge my colleagues at Gannett Fleming who were involved in geotechnical and structural design on the project. [Source: GeoDrilling International. Image: Hensel Phelps Construction]
Related Articles
Geotechnical Contractor DBM Digs Up 13,000+ Year Old Mammoth Tusk in Drilled Shaft Excavation
February 17, 2010
rockman
Geoarchaeology
Comments Off on Geotechnical Contractor DBM Digs Up 13,000+ Year Old Mammoth Tusk in Drilled Shaft Excavation
Drilled Shaft Rig Topples in Austin, Texas [Video]
An excavator mounted drill rig drilling shafts as part of a project to pass utilities under I-35 near 51st Street toppled over while trying to move in soft, rain soaked soil. The Austin Fire Department was able to extract the operator from the cab and he was taken to a local hospital with minor injuries, a minor miracle. I’m not sure what the purpose of the drilled shafts were for. Since the project was for some kind of utility pipe jacking under the freeway, I’m speculating it was drilling holes for temporary shoring for the jacking pit or something along those lines. I’m sure OSHA will be looking into the incident. Video news story after the break. (Photo from Austin KXAN.com).
Video: Drilled shaft construction on Arizona DOT Project
November 4, 2011
rockman
Project Related
Comments Off on Video: Drilled shaft construction on Arizona DOT Project