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]
Geologic Hazards
Geotechnical investigation and recommendations complete for US 89 Bitter Springs Landslide
The geotechnical investigations and report are complete for the US 89 Bitter Springs Landslide south of Page, Arizona. ADOT published a news release with the results of Kleinfelder’s geotechnical investigation and a link to their […]
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 […]
Project Related
World Record O-Cell Load Test in St. Louis, MO!
My colleage Robert Thompson at Dan Brown and Associates has posted about the World Record O-Cell test they were involved in on the new Mississippi River Bridge for I-70 in St. Louis, Missouri. The new […]