Stiver Engineering designed key components for the 452 feet pump station tunnel at the North Clarksville Water Treatment Plant in Clarksville, Tennessee. Designs included an 87.5-inch diameter casing, thrust block and analysis for the anticipated pipe jacking loads for the tunnel. Pipe buoyancy calculations were performed along with the CMU bulkhead design and analysis for…
Stiver Engineering provided the structural design of the 34 ft. ID x 80 ft. deep secant pile launch shaft and secant pile receiving shafts for the 132in. diameter tunnel beneath US 59.
Stiver Engineering provided construction consulting services for a sanitary sewer project at the Broadway Corridor in San Antonio. This project required designs for trench safety (with adjustable height); bore pit, beam, steel plate and timber lagging shoring; steel casing; liner plate tunnels; thrust block; pipe jacking; and pipe buoyancy. We delivered plans for a pipe…
Stiver Engineering provided the horizontal directional drilling alignment and pulling calculations for a 42’’ inch diameter force main crossing beneath the Houston Ship Channel adjacent to the 69th street wastewater treatment plant. The purpose of the HDD installation was to replace the existing Hedrick Force Main Aerial Crossing. The HDD was approximately 1,000 ft. and…
Stiver Engineering provided the contractor with an alternate tunneling method for a 6-inch diameter force main. The alternate design consisted of a horizontal directional drill (HDD) that was 21 ft. beneath an existing railroad. The pull forces and pipe stresses were analyzed and a profile was delivered to the contractor for construction.