ASTM WK66458

    New Specification for Vegetated / Geosynthetic Transition Mats1 for Scour Prevention at Pipe or Culvert Outlets

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    Developed by Subcommittee: D18.25 | Committee D18 | Contact Staff Manager



    WK66458

    1. Scope

    This specification covers requirements and test methods for Transition Mat . Table 1 is a material properties and performance specification based on flow rate and shear stress requirements. This specification is applicable to the use of a transition mat in a channel or outfall to prevent scouring below and downstream of a pipe or culvert outlet. The Transition Mat should mechanically protect soil from scour and erosion until the shear hydraulic forces have dissipated enough for other erosion control methods are able to prevent soil erosion.


    Keywords

    turbulance Laminar flow energy dissipation

    Rationale

    Standardize requirments for this class of erosion control products for the specific application

    The title and scope are in draft form and are under development within this ASTM Committee.

    Citing ASTM Standards
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    Work Item Status

    Date Initiated:
    01-04-2019

    Technical Contact:
    Keith Harris

    Status:
    Draft Under Development