Modified angled silt fence

Details Modified angled silt fence Modified angled silt fence

2006-03-07

2006-03-07

Lagman, Frederick L. (Department: 3673)

Hydraulic and earth engineering

Earth treatment or control

Ground stabilization or reinforcement

C405S302700

Reexamination Certificate

active

07008143

ABSTRACT:
A silt fence includes a support comprising having a rear strut pivotally joined with an articulated front support. A geo-textile sheet attaches to the support forming a filtration barrier having compound slope. A lower section is sloped at the first angle sufficiently steep to shed non-colloidal silt. An upper section is sloped at the second slope angle sufficiently shallow so as to expose a proportionally greater barrier surface area to ponded water to increase the water flow capacity for given height of water. Additionally, the second slope angle is sufficiently steep to shed a portion of the non-filtered colloidal silt.

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patent: 6692188 (2004-02-01), Walker et al.
patent: 6709202 (2004-03-01), Spangler et al.

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