This report details the outcome of tests carried out at the Hydraulics Laboratory
of the University of California, Davis to assess the performance of three
alternative Gross Solids Removal Devices (GSRDs) developed by Caltrans to
remove litter and solids from storm water runoff. These devices were: the Linear-Radial GSRD, the parabolic screen (Type 1) GSRD and the straight screen
(Type 2) GSRD.
A large-scale test facility was designed and built specifically for the purpose of
testing full scale devices under conditions of flow rates and litter-loading
percentages that correspond to those actually encountered in Caltrans drainage
facilities. The litter used in the tests was manufactured in accordance with the
results of previously commissioned studies by Caltrans on the characterization of
The objective of the Phase III Gross Solids Removal Devices (GSRDs) Pilot study was toevaluate the performance of non-proprietary devices that can cap...
The objective of the Phase IV Gross Solids Removal Device (GSRD) Pilot study was to evaluatethe performance of one non-proprietary device that can cap...
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United States Department of Transportation
[PDF-9.65 MB]
