Alternatives To Rip Rap – Environmentally-Sensitive Bank and Channel Protection Methods

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When:
October 21, 2020 @ 1:00 pm – 4:00 pm America/Toronto Timezone
2020-10-21T13:00:00-04:00
2020-10-21T16:00:00-04:00
Where:
Online Webinar
Cost:
$99

REGISTRATION IS CLOSED

Overview

In 2005, the Transportation Research Board received a “problem statement” from its member Highway Department DOTs – “Are there any alternatives to the traditional bank and channel protection measures, such as riprap, gabions, cable-tied blocks, or grout-filled bags, that offer beneficial “in-stream functions”, such as: habitat diversity, fish passage, water quality and aquatic habitat?”

A 3-year research project was awarded to Salix Applied Earthcare to develop a list of environmentally-sensitive methods, such as bioengineering, root wads, large woody debris, bendway weirs, and engineered riffles, intended to protect highway facilities from erosion, incision, and lateral migration.

This course is presented by the research Principle Investigator – a CPESC, fluvio-geomorphologist, and bioengineering practitioner – who also, as a Licensed Contractor, has been building and monitoring dozens stream projects that utilize NCHRP Report 544 as “the basis of design”.

Techniques 30% cheaper than riprap.

Not only will the techniques be presented, both before, during and after construction, but the following other topics will be covered:

  • the use of clean, self-launching (well-graded) stone to facilitate construction with no water quality impacts
  • the use of re-directive, thalweg management strategies that effectively move the high velocity flow vectors away from the sensitive banks
  • the use of biotechnical methods that combine vegetative and structural in a mutually beneficial manner. Methods that grow stronger with time.

The “proof is in the pudding”.  This course is packed with documented case studies using photos and Dirttime.tv video clips. showing the techniques employed in Alberta, AK, New Zealand, California, and Malaysia.

Learning Objectives

  1. The learner will become aware of the primary results from the NCHRP Report 544 – Environmentally Sensitive Channel and Bank Protection Methods.
  2. The learner will learn how thalweg management and re-directive techniques allow the designer to “move” or deflect the high velocity, high shear vectors away from the banks thereby reducing the reliance on rock slope armoring enabling the use of more bioengineering methods.
  3. The learner will see how it is possible to work in “live water” without isolation or diversion techniques while having no downstream water quality impacts.

Instructors

John McCullah, Salix Applied Earthcare LLC