Stiver Engineering provided launch shaft, excavator digger shield and thrust block design services for a 108-inch-diameter water line project along city easements from Milner Road to Aldine Westfield Road in Houston, Texas, near the Intercontinental Park area. Two shoring pits, each more than 30 feet deep, were designed with soldier piles, steel plates and timber lagging. Waler beams were used to support the soldier piles. At the launch pit, a jacking frame was designed at the bottom of the pit to resist the thrust from the excavator boring shield system. The jacking frame consisted of three extra waler sets and diagonal bracings connected to a portal support frame using king beams, a header beam and a footer beam.

Stiver Engineering provided structural analysis, foundation design and review of the shop drawings for a wastewater treatment plant expansion in Buda, Texas. A detailed finite element analysis of the steel circular structure was developed to perform critical stress and deflections checks.

The Rivanna Water & Sewer Authority Rivanna Tunnel Project is located in Charlottesville, Virginia.  The project was design and constructed to help offset sewage overflow during heavy rainstorms.  The project includes the excavation for a new tunnel and building a new pump station that will sit on a site near RWSA’s Moores Creek Wastewater Treatment Plant.  The 1,600-foot long, 11-foot diameter tunnel will stretch from an area near Riverview Park in Charlottesville’s Woolen Mills neighborhood to the RWSA property.  The new 60-inch sewer pipe and the pump station have the capacity to move 53 million gallons per day.  The tunnel, which was excavated through solid rock, is located at approximately 60 feet below the surface for a large portion of its length, around 85 feet or more at its deepest levels and approximately 30 feet at the most shallow points.

Stiver Engineering provided the contractor with construction consulting through a support system for the 60″ diameter Hobas Pipe during the grouting phase of the 11 ft. diameter tunnel.  Stiver Engineering provides pipe buoyancy calculations and pipe support design for contractors throughout the United States.

 

During the remodel of an existing 2,356 square-foot brick building in Houston, Texas, our client required site development through utility connections for commercial occupancy. After joining the project, we designed waterline, fire line, and sanitary sewer connections for the building, provided a reinforced concrete wheelchair ramp design per ADA requirements, and submitted plan and profile drawings to the City of Houston. The project was permitted by the City of Houston.

One of our clients came to us and requested site development services for the development of a 1-acre property located in Midtown Houston, Texas. The scope of this project was extensive and included such services as existing drainage analysis, proposed drainage analysis, storm sewer design, porous paving design, grading plans, driveway design, parking plans, and more. Stiver Engineering provided permitting services for our client, and the project was permitted by the City of Houston.