A new administration building site at Quantico National Cemetery in Triangle, Va., required an underground storm water detention system after an expansion.
The expansion of the building, located just inside the cemetery’s entrance gates on Joplin Road, included about 4,500 sq ft of office and administrative space and a covered portico of about 2,500 sq ft.
For civil designer AMEC Environment & Infrastructure of Kennesaw, Ga., key concerns were to control runoff from newly constructed impervious surfaces to prevent storm drain overloading and other downstream issues such as flooding and erosion, and to achieve this with minimal footprint on the compact project site. AMEC specified Oldcastle Precast’s Storm Capture detention system to manage the post-construction storm water runoff.
The final concrete components supplied to the project by Oldcastle Precast included 16 7-by-15-by-7-ft precast detention modules and an integrated outlet control structure. The underground, high-strength structural concrete storage modules, which were installed in the early fall of 2013, provided 12,336 cu ft of underground detention, and the outlet control structure provided controlled discharge and overflow capabilities. The modules incorporated several inlet pipes, as well as four manway access points to allow maintenance access into the storm water management system. An impermeable polyethylene membrane was used to wrap the Storm Capture module assembly to provide a 100% watertight system.
W.C. Spratt Inc. of Fredericksburg, Va., installed the system for general contractor Leebcor Services LLC of Williamsburg, Va., and architect for the project was Matrix Settles of Arlington, Va. Comprising 725 acres, Quantico National Cemetery is a military cemetery for veterans of the United States Armed Forces and was established in 1983 adjacent to the Marine Corps Base Quantico.