Sims Bayou Microtunneling Project

Sims Bayou Microtunneling Project

It was a great start to the New Year in 2023 for the Melcar Group as their Akkerman SL82P MTBM holed-out on the Sims Bayou tunnel project in Houston, TX.  The $18.9 million project was designed to increase the overall capacity of the region’s drinking water by making the critical connection of the large diameter…

Memorial Park Ravine Bridges

Memorial Park Ravine Bridges

Stiver Engineering provided construction engineering services for the land bridge and prairie project at Memorial Park in Houston, Texas. The city closed Memorial Drive, a major traffic thoroughfare, in both directions to accommodate workers as they installed support beams for three new Ravine Bridges which will link a new section of the Seymour Lieberman Trail. Stiver…

Ashburton Tanks Project

Ashburton Tanks Project

The Baltimore City Department of Public Works (DPW) is converting open-air drinking water lakes to buried tanks to help preserve the city’s drinking water system and comply with federal Safe Drinking Water Act regulations. Stiver Engineering provided a custom shoring pit with support frame, plans for pipe supports and pipe hangers for large diameter steel pipe. We also provided the review…

Coh Hedrick Force Main Crossing Replacement— 42” Horizontal Directional Drill Under Buffalo Bayou

COH Hedrick Force Main Crossing Replacement— 42” Horizontal Directional Drill Under Buffalo Bayou

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…

Plum Creek Hdd Project

Plum Creek HDD Project

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.