Case Study: San Antonio Water System
TTL was asked to provide support to the San Antonio Water System (SAWS) in a dispute between SAWS and the City of San Antonio (COSA). The water and sewer mains on Billings Drive between Prescott Drive and Bay Horse Drive were reconstructed by SAWS in the summer of 2016. The pavements on Billings Drive between Prescott Drive and Bay Horse Drive were reconstructed in the summer of 2017. Shortly after the completion of the pavement reconstruction, longitudinal cracks began to appear on the western and eastern sides of the road.
COSA believed the cracking was a result of settlement in the water line trench backfill, which ran along the western side of the road. TTL developed a study to document the existing conditions of the roadway including locating the cracks using an autonomous aerial vehicle and measuring the elevation changes along the pavement surface. The elevation changes along the pavement surface were measured using a LIDAR survey utilizing a Leica ScanStation P40. Cross sections of Billings Drive were developed at 50-foot intervals. TTL concluded the general conditions observed showed the pavement surface heaved within 3 to 6 feet of the curb line and there was no settlement in the water line trench backfill.
Other Sample Projects:
Alberta Parkway Phases 1 & 2
An EF-4 tornado destroyed the residential area in the vicinity of 7th Street East in the Alberta area of Tuscaloosa in 2011. Planning efforts to help revitalize the area resulted in recommendation of a new +/- 3,700 linear foot Boulevard and shared use path. The project provided an east-west connection between an area elementary school,…
Aliceville Federal Prison
This prison project is located on approximately 650 acres in Pickens County, Alabama. The prison consists of a medium security federal prison for women and a satellite prison camp for minimum-security female inmates. The site also contains ball fields, a warehouse, garage, utility plant, and firing range. The project cost was approximately $200 million and…
Corpus Christi Housing Authority
This project consisted of minor interior and exterior renovations of 32 multi-family housing units between 440 and 856 square feet. TTL provided the asbestos surveys for the 32 units, obtained project approval with the Texas Historical Commission (THC), and assisted the City of Corpus Christi Housing Authority with environmental reviews for HUD funding.
Ft. Campbell Rotary Wing Hangars
TTL performed a geotechnical exploration for two hangars at Fort Campbell, Kentucky. Construction included two new hangar structures totaling 140,000 square feet, subsurface utilities, Low Impact Development (LID) stormwater management structures and bio-retention basins, approximately 480 new parking spaces/access drives for automobile traffic, and approximately 875,000 square feet of new ramps, helipad, and taxiway area….