On-Demand Webinar: Filter Design History and a One-Step Design Process

The webinar consists of two basic parts:

• A history of filter design practice including theoretical design considerations.
• A step-by-step design process with criterion for the design of a critical filter for one example soil type.

The primary topics covered in the first part of the webinar are:
1. Early filter designs that addressed only interparticle seepage and piping.
2. The historical research performed by Sherard et al to develop critical filters for soils with defects (cracks, etc.)
in the soil.
3. The basis for regrading soils that contain considerable coarse-grained particles (gravels).

The primary topics covered in the second part of the webinar are:
1. A simplified, step-by-step process for designing filters that will comply with most agency design criteria.
2. A step-by-step detailed example of a filter design for one of the four base soil categories.

The step-by-step process is related to the most common agency design criteria and steps, including those of the USACE, Reclamation, and the NRCS.

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