Print this page Design of Riprap Revetment
Vincent D. Reynolds, MBA, P.E.
Course Outline
This 6 hour course will discuss the design of several types of riprap types including, rock riprap, gabions, rubble riprap, grouted rock, and paved linings. Ancillary design concepts such as rip rap toe design, channel flow analysis, manning’s equation, shear force analysis, and ice force effects will also be covered. Design examples will be presented to aid in understanding the course material.
This course includes a multiple-choice quiz at the end, which is designed to enhance the understanding of the course materials.
Learning Objective
At the conclusion of this course, the student would have learned the following:
- Methods for protecting highway embankment from stream erosion;
- How to calculate the superelevation of flow in a channel bend;
- The results of excessive pore pressure;
- Various types of slope protection;
- The maximum length to width ratio of riprap material;
- The estimated longitudinal extent of downstream revetment protection;
- The cheapest streambank protection designs;
- How to calculate the value of K1;
- How to calculate the median particle size;
- How to determine the correction factor for stability;
- How to determine the common median stone sizes;
- How to equivalent diameter of bed material;
- The maximum recommended face slope for riprap installations;
- How to determine the manning’s roughness coefficient;
- Mixing requirements for pre-cast concrete blocks;
- How to calculate the correction factor for wave run-up;
- Minimum thickness for mattresses used as bank toe aprons;
- How to determine the hydraulic radius for a channel section;
- How to determine the average tractive force;
- How to define subcritical flow;
- Characteristics of flow in channel bends;
- How ice can affect rip-rap;
- How to design rip-rap toe material; and
- Particle size characteristics of rip-rap.
Intended Audience
This course is intended for anyone with an interest in erosion and sediment control, NPDES Pollution plans, environmental engineering, water resources, city planning, or anyone wanting to know more information regarding Design of Riprap Revetment
Benefit to Attendees
This course is designed so that the intended audience will benefit immediately with the information to aid in the effective design of Design of Riprap Revetment facilities.
Course Introduction
The forces of water can be extremely strong due its unit weight, flowrate, and velocity. The force of water through earth channels can cause erosion due to the soil particles becoming displaced by movement, stress, and pore pressure. Riprap revetments are used as channel bank protection and channel linings for streams and rivers. Riprap should be designed so that it does not fail under stress and thus protect the streambank.
Course Content
This course will discuss the design of several types of riprap types including, rock riprap, gabions, rubble riprap, grouted rock, and paved linings. Ancillary design concepts such as rip rap toe design, channel flow analysis, manning’s equation, shear force analysis, and ice force effects will also be covered. Design examples will be presented to aid in understanding the course material.
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Course Summary
This course is designed so that the intended audience will benefit immediately with the information to aid in the effective design of riprap revetments.
Using good engineering judgment is always paramount in any situation. Utilizing good judgment and the knowledge gained in this course will aid the reader with the knowledge to design efficient riprap revetment.
Related Links
For additional technical information related to this subject, please visit the following websites:
Federal Highway Administration:
http://www.fhwa.dot.gov/
Unified Facilities Criteria:
http://www.wbdg.org/ccb/browse_cat.php?o=29&c=4
Environmental Protection Agency (EPA):
http://www.epa.gov/
Quiz
Once you finish studying the above course content, you need to take a quiz to obtain the PDH credits.
DISCLAIMER: The materials contained in the online course are not intended as a representation or warranty on the part of PDH Center or any other person/organization named herein. The materials are for general information only. They are not a substitute for competent professional advice. Application of this information to a specific project should be reviewed by a registered architect and/or professional engineer/surveyor. Anyone making use of the information set forth herein does so at their own risk and assumes any and all resulting liability arising therefrom.
