Piers and foundation support structures are being installed for the base of the 9-gate expansion project at the Barbara Jordan Terminal. Phase 1 demolition work to remove the existing concrete has concluded. Work to expand the stormwater collection system continues to meet current and future demands.
185 concrete piers to provide 9-gate foundation support
The existing concrete apron demolition has been completed as part of the paving removal phase and contractors are now setting the 185 foundation piers that will support the framework for the new 9-gate terminal expansion structure.
Phase 1 demolition of the concrete apron resulted in the removal of 148,000 square feet of 16-inch thick concrete along with 12-inches of both cement treated and aggregate base.
According to lead contractor, Hensel Phelps Construction, around 1,370 truckloads hauled off 7,290 cubic yards of concrete paving, 2,740 cubic yards of cement treated base and 2,740 cubic yards of aggregate base. All demolition removal will be crushed and re-used.
Drilling and building of the steel reinforced bars for cages is commencing for the 185 foundation piers that will range from 24 to 42-inches in diameter. They will be anchored 70-80 feet deep, and it is estimated that nearly 3,300 cubic yards of concrete will be used to construct the foundation piers.
Stormwater collection facility to double volume
More concrete creates more runoff. As part of the apron, terminal expansion and improvements project, the construction of a new stormwater and deicing collection facility is under construction. This will more than double the size of the existing facility in terms of volume to handle approximately 2.4 million gallons to meet current and future airport needs and requirements.
Because a substantial amount of the airport property is concrete and includes other impervious surfaces, water generated by rain does not absorb and filter through the soil. Precipitation and other fluids that runoff from the runways, ramp areas, buildings and parking structures navigate into the airport’s drainage, detention ponds and collection systems. By capturing precipitation and fluids, this system lessens the environmental impact of the airport.
The new stormwater deicing facility location was chosen across the mid-field taxiways to take advantage of existing piping and stormwater lines that will connect to the new facility. It also allows for the collection of stormwater from the newly expanded apron. The new stormwater facility is estimated to be completed in 2017.
This blog is regularly updated to inform travelers and the public of the latest construction activities at Austin-Bergstrom International Airport. Information ranges from customer service improvements to changes in travel processes.