Evaluation of filter criteria and thickness for mitigating piping in sands
Full Citation
Permanent Link: http://ufdc.ufl.edu/IR00001157/00001
 Material Information
Title: Evaluation of filter criteria and thickness for mitigating piping in sands
Physical Description: Technical Reports
Creator: Townsend, F. C.
Bloomquist, David
Shiau, Jih-Min
Martinez, Ramon
Rubin, Heidi
Publisher: University of Florida, College of Engineering, Department of Civil Engineering
Place of Publication: Gainesville, FL
Publication Date: January 1988
Abstract: A laboratory testing program was undertaken in order to understand better the phenomena of hydraulic piping in sand and to evaluate current filter design criteria. To simulate field conditions a hydraulic flume was used in which a saturated sand layer could be placed and subjected to variable pressure heads of water. With small initial pipes formed in the sand, the critical heads required to initiate piping were determined. Six sand gradations were tested, three of the gradations are uniform but with different effective grain diameters, one gradation was well graded and lastly, two gradations were gap gradings which also have different effective grain diameters, The most piping susceptible uniform sand among those tested was subsequently used as a base soil in filter design evaluation experiments. Based upon the ratio of soil to filter grain diameters, several different filter gradations and thicknesses were tested to evaluate filter design criteria.
Acquisition: Collected for University of Florida's Institutional Repository by the UFIR Self-Submittal tool. Submitted by Denise Bennett.
Publication Status: Unpublished
General Note: for: U. S. Bureau of Reclamation Engineering & Research Center U.F. # 4910450421512 Contract # 7-PG-81-22160
 Record Information
Source Institution: University of Florida Institutional Repository
Holding Location: University of Florida
Rights Management: All rights reserved by the submitter.
System ID: IR00001157:00001


This item is only available as the following downloads:

Townsend88 ( PDF )

Full Text