Structural Design Challenges—Using Segmental Precast Concrete Construction for Large Process Sumps and Tank Foundations

Precast concrete products such as sumps, culverts, and trenches within truckable sizes are commonly used in industrial plants because they can be easily shipped and installed. For larger process sumps and tank foundations, the design of precast concrete segments can be unique and challenging in that additional considerations become necessary for size and weight effects, shipping, water stop detailing, connections between segments and installation sequence. Large diameter cylindrical storage water tanks are typically supported by a concrete ring wall foundation. Large process sumps typically are rectangular concrete boxes with structural steel platforms supporting vertical pumps and include one or more pipe penetration through the walls. Because sumps are positioned mostly below grade, the effects of unbalanced lateral soil pressure, and grade slope need to be considered. Traditionally, such tank and sump foundations are constructed on site using cast-in-place procedures, which are often impacted by weather conditions, labor resources and concrete batch plant capability. Utilizing precast concrete foundations can minimize these effects, control the product quality better and reduce labor cost. This is particularly suitable for a project located in a remote and weather-sensitive area. This paper addresses the design challenges of two large process sumps and one water tank foundation using segmental precast concrete construction for a project located in eastern Russian. Design considerations include the effects of a high seismic zone, thawing permafrost, waterproof joint design, transportation, and lifting loads, as well as conformance to Russian design codes. Additional considerations include constructability, transportation weight and size limits, precast contractor location and capabilities, seasonal construction periods, and the sequencing of installation.

Language

  • English

Media Info

  • Media Type: Web
  • Pagination: pp 1937-1948
  • Monograph Title: Structures Congress 2015

Subject/Index Terms

Filing Info

  • Accession Number: 01562467
  • Record Type: Publication
  • ISBN: 9780784479117
  • Files: TRIS, ASCE
  • Created Date: Apr 29 2015 9:07AM