This was an Emergency Caltrans project located on Hwy 50 near Bridal Veil Falls. This project consisted of 60 EA soldier piles, 30 inch diameter up to 60 foot deep. In addition to the soldier piles, this project included the installation of 110 EA tiebacks, ranging from 73 to 118 feet in length to stabilize…
This subcontract performed for the US Army Corps of Engineers consists of a 100’ deep permeation grout curtain for a control structure.
The Calaveras Dam Replacement project is a replacement of the existing earthen dam undertaken by the San Francisco Public Utilities Commission, with the general contractor as Dragados-Flatiron-Sukut Joint Venture. Drill Tech was subcontracted to perform deep soil mixing to stabilize the disposal site, to excavate a 154-ft deep shaft, five starter tunnels (12’ dia. x…
Drill Tech was contracted to perform new tunnel construction work adjacent to Oakdale Irrigation District’s South Main Canal. OID decided to build a new tunnel for canal irrigation water conveyance from Tulloch Reservoir to bypass over a mile of existing canal that was subject to seismic and slope failures on steep mountain slopes. The project…
This project includes the excavation of twin 8,000’ long declines 19’ in diameter with associated passing bays, cross passages and side drifts. The total combined footage of excavation is just over 18,000 LF. Excavation methods consisted of a combination or roadheader and drill & blast. Excavation support consisted of shotcrete and rock bolts.
New Era Petroleum’s West Warm Springs project consists of a 910 feet deep shaft, shaft station, underground tunnels and drill stations for the purposes of extracting oil.
This project involved the construction of a three story above grade structure.
This project included three major scopes of work: Temporary Shoring, Dewatering and Design-Build Pile Foundation.
605 ea. 36” diameter secant piles ranging in depth from 35’ to 95’.
Drill Tech is installing a Cutter Soil Mix (CSM) Caisson Shoring System around the underground Nuclear Reactor Caisson structure at the Humboldt Bay Power Plant.
Drill and blast excavation of nearly 130,000CY of tunnels and caverns totaling 4000’ of drive at the Barrick Cortez Hills Underground Mine to allow construction of underground batch plants, ore bins and conveyors.
This DTDS contract completed in June of 2012 primarily consisted of excavating and lining three parallel tunnels of the modified horseshoe shape, each approximately 300 feet long.
Two 12 ft x 12 ft horseshoe shaped tunnels approximately 300 foot long driven via Roadheader.
The project consisted of underpinning and bracing of the historical 86 year old stadium wall facade as well as temporary shoring wall systems to allow the demolition of the existing stadium and reconstruction of a state-of-the-art football stadium.
This DTDS contract consisted of drilling, setting beams, pouring concrete in wet and dry conditions, installing permanent wood lagging for approximately 2,400 square feet of exposed shoring, 37,490 lineal feet of soil nails with an anchored wire mesh rock slope protection system. Also performed was drilling 85 beams from 15 to 60 feet in length,…
