New Structural Liner and Cast-in-Place Roof for Sulfur Pit

New Structural Liner and Cast-in-Place Roof for Sulfur Pit

New Structural Liner and Cast-in-Place Roof for Sulfur Pit

  • 3D finite element model developed structural plans of the new pit
  • Tstrata ISR™ concrete material used to create a new floor liner and liner walls
  • Cast-in-place roof engineered to reduce turnaround time

United States

Project Team
  • Civil/Structural Engineering & Investigation: STRUCTURAL TECHNOLOGIES
  • Mechanical Engineering & Design: Brindley Engineering
  • Specialty Contractor: STRUCTURAL

A sulfur pit originally installed in the late 1990’s with an inverted shipping container cast into the ground had severely corroded to the point of failure. STRUCTURAL TECHNOLOGIES was part of a team that provided a comprehensive investigate – design – build approach for the repair project.

STRUCTURAL TECHNOLOGIES led a team that performed an initial investigation of the sulfur pit to understand the pit conditions, as well as laser scanning the existing mechanical systems. The team developed a comprehensive design featuring cast-in-place slab, structural wall system and roof – all built within the existing pit. Additionally, the team developed a 3D finite element analysis (FEA) model to validate the solution would support the required demands on the walls and the roof.

STRUCTURAL was contracted to perform the installation of the new pit system. The project team removed the existing roof system, internal piping and steel support beams for the roof. Tstrata ISR™ Sulfate Resistant Restoration Material was mixed and placed to create the new floor liner and liner walls, both up to 10” thick. The new cast-in-place concrete roof system was then installed, a system that allowed a quick turnaround. High temperature cementitious grouting was then installed beneath pump bases while the re-engineered mechanical / process system and structural supports were installed to complete the project.

The rehabilitation of the pit was a success, bringing the pit back to original operating capacity.