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  • Users: fernley
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  1. fernley

    Calculating particulate entrainment from riprap

    I've been using an equation from Izbash(1970) to help predict stable stone sizes for riprap which could undergo river flow rates of up to 10m/s, unfortunately, the resultant Dn sizes seem rediculously large. Is there a better more realistic formula for estimating the size at these high flow rates?
  2. fernley

    Using willow spiles to retain a soil riverbank

    I've put forward a proposal to the Environmental Agency to retain my riverbank using 900mm high 75mm dia live willow spiles angled into the bank at 20 deg. Backfilled to the top with soil which will repose away from the edge upwards at an angle of 20 deg. below the soil is a foundation of...

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