Geotechnical construction contractor Hayward Baker Inc. was
recently awarded a contract for the New
Atlanta Stadium project. The new stadium, slated to open in 2017, will
serve as home for the Atlanta Falcons, a new Major League Soccer team, and
other major sports, entertainment and convention events.
The terms of the contract call for Hayward Baker to design and construct
2.5-foot diameter Vibro Piers™ to depths up to 27 feet to increase the
allowable bearing capacity to 4,000 pounds per square foot (psf) for a number
of the foundations. Hayward Baker is working 10 to 12 hour days Monday through
Saturday to maintain the schedule, reaching completion within 5 weeks of
Scope of Work
Hayward Baker’s work, having begun in August, consists of constructing Vibro
Piers to support isolated column foundations and load bearing continuous wall
foundations. A hydraulic predrill rig is being used to auger a 2.5-foot
diameter hole at each location prior to pier construction. The hole is then
backfilled with lifts of No. 57 stone and the vibrator is lowered to compact
each lift until the top elevation of the pier is reached. Hayward Baker is
utilizing proprietary data acquisition (DAQ) equipment to monitor and record
all construction parameters, including penetration depth, time and energy
parameters, and stone quantity.
The settlement of the foundations supported by the Vibro Piers will be limited
to less than 3/4 inches and 1/2 inches of differential settlement between the
supported footings. Two modulus tests to 150% of the design load were conducted
prior to production to confirm the vibro pier modulus utilized in the design.
Commenting on the New Atlanta Stadium project, Joe Persichetti, Vice President,
stated, “Hayward Baker is thrilled to have this opportunity to work with Reeves
Contracting and the Joint Venture team consisting of Holder, Hunt, Russell, and
Moody on this exciting project for the Atlanta community. Hayward Baker’s core
values regarding safety and quality match those of the other team members and
are intrinsic to making this project a success on all levels.”
Click here to see a larger version of this photo.
The New Atlanta Stadium rendering.