Location
St. Louis, Missouri
Date
02 Jun 1993, 2:30 pm - 5:00 pm
Abstract
Storage tanks for a wastewater treatment plant were stage-loaded on weak compressible fine-grained soils. The in situ silt and sand layers/pockets present in the fine-grained soils were theorized to create sufficient drainage paths, so that the use of sand or wick drains were not required. Although the silt and sand layers/pockets were found to be discontinuous, "hydraulic fracturing" was expected to develop continuous drainage paths. A review of the extensive field investigation and geotechnical optimization of the site is presented. Details for the evaluation of the shear strength of the soils, the stage loading schedule and predicted settlements during loading are described. Settlement of the tank foundations and some measurement of the pore pressures were monitored in the field and the data obtained, presented herein, was found to be fairly consistent with the geotechnical analysis results.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
3rd Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 1993 University of Missouri--Rolla, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Lowery, K.; Wagh, A. N.; and Falcon, J. B., "Preloading Wastewater Treatment Plant Tanks" (1993). International Conference on Case Histories in Geotechnical Engineering. 11.
https://scholarsmine.mst.edu/icchge/3icchge/3icchge-session07/11
Preloading Wastewater Treatment Plant Tanks
St. Louis, Missouri
Storage tanks for a wastewater treatment plant were stage-loaded on weak compressible fine-grained soils. The in situ silt and sand layers/pockets present in the fine-grained soils were theorized to create sufficient drainage paths, so that the use of sand or wick drains were not required. Although the silt and sand layers/pockets were found to be discontinuous, "hydraulic fracturing" was expected to develop continuous drainage paths. A review of the extensive field investigation and geotechnical optimization of the site is presented. Details for the evaluation of the shear strength of the soils, the stage loading schedule and predicted settlements during loading are described. Settlement of the tank foundations and some measurement of the pore pressures were monitored in the field and the data obtained, presented herein, was found to be fairly consistent with the geotechnical analysis results.
