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Category Archives: Geotechnical

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Geotechnical Engineering Support

By stiver_adminMarch 3, 2023

Stiver offers geotechnical engineering through a third-party service to determine the soil/rock properties at shoring, tunneling, caisson or land development sites to support the designs that we provide to our clients.

Featured Projects

The Boardwalk Trail at Lady Bird Lake
The Boardwalk Trail at Lady Bird Lake
Construction Engineering, Pedestrian Bridges, Precast Structures, Structural Design

Due to a number of issues, there was a 1.1-mile gap in the Trail at Lady Bird Lake in Austin, Texas. Along this gap, visitors had to divert onto the narrow sidewalk and travel along busy Riverside Drive, crossing six lanes of I-35 access roads to travel east or west and use the south side…

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Texas Tech University – Memorial Circle Tunnel Replacement
Texas Tech University – Memorial Circle Tunnel Replacement
Access Shaft Design, Construction Engineering, Shoring Design

A client requested construction engineering assistance in the installation of supply and return piping beneath Memorial Circle on Texas Tech University’s campus in Lubbock, Texas. Stiver Engineering designed a shoring system using soldier piles, steel plates, timber lagging, a wale set, and cross struts. We also designed three concrete vaults and the steel pipe support…

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Waller Creek – Waterloo Park Project
Waller Creek – Waterloo Park Project
Construction Engineering, Foundation Design, Pedestrian Bridges, Retaining Wall Design, Shoring Design, Structural Design, Tunnel Design

The Waterloo Park project, Austin, Texas, specified that the flood waters stretching from Waterloo Park to Lady Bird Lake be diverted 70 feet below ground through a concrete shaft and tunnel to be discharged into Lady Bird Lake 1 mile downstream. The project removed an estimated 50 acres from the floodplain in Downtown Austin. Stiver…

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Northeast Water Purification Plant Expansion Project
Northeast Water Purification Plant Expansion Project
Access Shaft Design, Bore Pit Design, Construction Engineering, Dewatering Design, Shoring Design, Trench Safety Design, Tunnel Design, Wastewater Treatment Plants

The City of Houston’s Northeast Water Purification Plant (NEWPP) Expansion Project is a design-build project that will add 320 million gallons per day (mgd) by 2024 to the existing water plant’s capacity. The expansion project will allow the City and the regional water authorities to meet projected demands, while fulfilling requirements set by the Harris-Galveston…

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Heritage Plaza Pedestrian Tunnel Project
Heritage Plaza Pedestrian Tunnel Project
Construction Engineering, Dewatering Design, Shoring Design, Tunnel Design

A contractor in Downtown Houston, Texas approached Stiver Engineering and requested our assistance in the construction of a pedestrian tunnel connecting the Heritage Plaza skyscraper to a proposed parking garage across the intersection of Dallas St. and Bagby St. We  provided construction engineering by designing the shoring system for the excavation beneath the designated intersection…

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Private Subsea Product Testing Facility
Private Subsea Product Testing Facility
Agency Approval (Permitting), Caisson Design, Construction Management, Construction Submittals, Dewatering Design, Structural Design

One of our clients in Houston, Texas came to us with a specific request: install large caissons without steel reinforcing in order to avoid interference with the products being tested within the structures. We provided the client with multiple caisson designs that utilized fiberglass-reinforced concrete. We designed these structures to be poured in lifts and…

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Luce Bayou Interbasin Transfer Project
Luce Bayou Interbasin Transfer Project – Capers Ridge Pump Station
Construction Engineering, Dewatering Design, Shoring Design

The purpose of the Luce Bayou Interbasin Transfer Project is to provide additional surface water supplies to end users that utilize water from Lake Houston.  Additional surface water supplies will be transferred from the Trinity River to Lake Houston via the Luce Bayou Interbasin Transfer Project to meet the increased demand for surface water.  There…

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Indianapolis Deep Rock Tunnel Connector Pump Station
Indianapolis Deep Rock Tunnel Connector Pump Station
Construction Engineering, Dewatering Design, Foundation Design, Structural Design, Tunnel Design, Underground Structures

The DigIndy Project is a nearly 28-mile long network of 18 foot diameter deep rock tunnels being built 250-feet beneath the city.  Beginning near the Indiana State Fairgrounds on the north, and ending on the south side of Indianapolis, DigIndy will be the largest public works project in the city’s history. The tunnel system will…

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Integrated Pipeline (IPL) Project – Section 17 Trinity River Tunnel
Integrated Pipeline (IPL) Project – Section 17 Trinity River Tunnel
Access Shaft Design, Bore Pit Design, Construction Engineering, Dewatering Design, Shoring Design, Trench Safety Design, Tunnel Design

The Integrated Pipeline is a $48.5 million joint water supply project between Dallas Water Utilities and Tarrant Regional Water District. It involves building 150 miles of pipeline to transport up to 350 million gallons water daily from three East Texas Reservoirs into the Metroplex to increase reliable water access. Crews are installing 4,400 linear feet…

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West Ashley Sewer Tunnel and Influent Pump Station
West Ashley Sewer Tunnel and Influent Pump Station
Access Shaft Design, Bore Pit Design, Construction Engineering, Dewatering Design, Shoring Design, Structural Design, Tunnel Design, Wastewater Treatment Plants

One of our clients had to install a force main on piles at a depth of 12-feet below Charleston Bay. The project is located on the South side of Plum Island in the Ashley River Basin in Charleston, South Carolina. Stiver Engineering was retained to provide construction engineering services to design a shoring system for…

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New York Environmental Protection Bureau of Engineering Design & Construction
New York Environmental Protection Bureau of Engineering Design & Construction
Access Shaft Design, Bore Pit Design, Construction Engineering, Dewatering Design, Foundation Design, Shoring Design, Structural Design, Tunnel Design

The $142 million Schoharie Reservoir Project in Gilboa, New York – which is expected to be complete in the year 2020 – includes the construction of an intake structure at the bottom of Schoharie Reservoir, more than 2,000 feet of subsurface tunnels, and a valve chamber along Schoharie Creek. Once completed, the tunnel and valves…

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Mill Creek Drainage Relief Tunnel Project
Mill Creek Drainage Relief Tunnel Project
Access Shaft Design, Construction Engineering, Shoring Design, Structural Design, Traffic Control Plans, Trench Safety Design, Tunnel Design

The Mill Creek Drainage Relief Tunnel is a construction project that will bring needed infrastructure improvement to east Dallas, Texas. It will include 26,385 linear feet of tunneling at a 30-foot finished diameter with eight intake shafts and six lateral tunnels excavated by roadheader or excavators/breakers. The tunnel is being driven through Austin chalk by…

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UTMB Infrastructure – Ike Recovery Project
UTMB Infrastructure – Ike Recovery Project
Construction Engineering, Dewatering Design, Shoring Design

Stiver Engineering provided construction enigneering by designing the shoring system for the excavation beneath 12th Street on the UTMB Campus in Galveston, Texas. The shoring system was designed using cantilevered soldier piles in the sandy soils by pinning the base of the soldier piles with a timber member or steel pipe cross strut.

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Druid Lake Excavation & Shoring Project
Druid Lake Excavation & Shoring Project
Access Shaft Design, Construction Engineering, Dewatering Design, Retaining Wall Design, Shoring Design, Trench Safety Design

To help secure the Baltimore, Maryland City’s water supply, the Baltimore City Department of Public Works is covering a considerable portion of Druid Lake and installing two large underground water tanks.  Druid Lake holds filtered and treated water that is ready to be sent to consumers. To protect this drinking water supply, two covered storage…

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