ADOT put together a great little video embedded below that shows the construction of a drilled shaft foundation, or caisson as they are also known, for a bridge on the Loop 303 project in Surprise, AZ. The foundations shown are 88-feet deep and the rebar cage weighs in at about 20,000 pounds. The hole takes around 80 cubic yards of concrete to fill (that’s 8 concrete trucks). The video shows the fabrication of the cage, drilling the hole, and picking up and lowering the cage. My favorite part is the perspective of the video taken from the top of the cage as it is picked up and lowered, very cool. [Source: ADOT Blog]
Miscellaneous
ADSC Lawrenceville Rock Socket Load Test Site–Prediction Contest!
As part of an ongoing ADSC research project on axial capacity of drilled shaft rock sockets in the Southeastern US, several test shafts were constructed this past week and the load test portion will commence […]
Project Related
Magco drills deep foundations for Phoenix Airport
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, […]
Miscellaneous
Big Stan – Biggest Truck Mounted Drill in the Southwest Busy near Las Vegas
Big Stan is a drill rig like no other. Weighing in at 250,000 lb with a mast 90-ft high, it is the largest truck mounted drill rig in the southwest and possibly one of the […]