Filter Diaphragm Exhibits
A filter diaphragm is a designed zone of filter material constructed around a conduit. This zone can act both as a drain to carry off water and as a filter to intercept soil particles being transported by the water. A filter diaphragm is an important component of design for both new construction and the renovation of older embankment dams.
Content From Conduits through Embankment Dams (FEMA)
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Typical Configuration for filter diaphragm used in the design of an embankment dam.
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Typical configuration for filter diaphragm used in design of an embankment dam. The filter diaphragm should extend into the foundation soils, where an excavation is made for the conduit.
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Typical configuration for a filter diaphragm used in the design of an embankment dam. The figure shows the location of the filter diaphragm as far downstream as possible, leaving adequate cover over it.
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Construction of a filter diaphragm within an embankment dam.
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Filter diaphragm trench excavated and backfilled with sand
Revision ID: 1403
Revision Date: 06/24/2022