- College Station, TX
Project Case Study
Academy Sports & Outdoors
We provided civil engineering and geotechnical engineering services for the Academy Sports and Outdoors site located at SH 6 and Northrup-Grumman Road in College Station, Texas. The project consisted of the construction of a tilt-wall structure with a square foot age of 72,300 feet, ancillary driveway, and parking area pavements consisting of 355 parking spaces.
Geotechnical Engineering. Geotechnical recommendations were based on column loads of 100 kips, wall loads not-to-exceed 165 kips, floor slabs of 300 psf, and 20 year pavement design with 100,000 and 150,000 ESAL’s. Our scope of work included drilling 20 test borings to depths ranging between 5 and 30 feet to evaluate the subsurface arrangement of strata and groundwater conditions across the site. Recommendations for site, subgrade, and fill preparation; foundation design and construction; retaining wall design and construction; and pavement systems were provided based on the physical and engineering properties of the strata observed.
Civil Engineering. Civil engineering for the project addressed areas between the building and perimeter of the property including utilities, storm water management and detention, site grading, accessibility, and design for site elements such as paving and retaining walls. We provided a drainage report to analyze the total 14 acres to be developed (the proposed Academy is 6.5 acres out of these 14 acres analyzed). The total affected drainage area was 53.80 acres. We designed a detention pond with a bottom elevation of 255.25’ and a maximum top elevation of 263.0; a staged outlet structure with a concrete 18”x18” square for the first stage at an elevation of 255.0’ and a rectangular concrete weir that is 18’ wide by 1’ foot high at an elevation of 258.5’ for the second stage. The proposed detention pond will have a bottom elevation of 255.25’ and a maximum top elevation of 263.0’. The proposed staged outlet structure will have a concrete 18”x18” square for the first stage at an elevation of 255.0’ and a rectangular concrete weir that is 18’ wide by 1’ foot high at an elevation of 258.5’ for the second stage. Based on these proposed conditions the pond behavior for the different storm events is shown below in Table 5. The pond functions as anticipated and does not overtop and will have a freeboard over 6”. In order to route the runoff to the proposed storm sewer system, curb in lets where placed inside the parking lot to capture the runoff and proposed downspouts intercepted the roof runoff into the proposed storm sewer. The storm sewer system was then routed north into the detention pond. The storm sewer system was designed and analyzed for the 10 year storm event. Under these conditions, the hydraulic grade line was held within the system.