Scour in Cohesive Soils
Credits: 7 PDH
PDH Course Description:
Scour in cohesive soils has been a challenge for engineers and designers. Unlike noncohesive soils, practical measurement techniques and well accepted guidance of the scourability of cohesive soils are severely lacking.This course summarizes a study through which an erosion testing device that simulates open channel flow on a small scale was developed and tested. In addition, a recommended design approach is provided that can be used for estimating scour for a range of cohesive soils.
Topics:
- Cohesive soil behavior
- Erosion testing and testing devices for cohesive soils
- Critical shear stress of conhesive soils
- Erosion rates, rate models, and estimated parameters
- The ESTD, the Moving Belt, and the direct Force Gage
- Measure of flow and bed shear stress
- Flow field, shear stress measurements
- Soil preparation and properties
- Preparing soil specimens
- Direct shear and unconfined compression test
- Slaking, the slaking mechanism, and slaking test
- Critical shear stress, USDA models, Briaud mounds, power model
To take this course:
1.) Enroll in Course: Click below to enroll:
(must be logged into your user account)
Download the Study Guide
3.) Test: Once you've thoroughly read the course materials, please click below to take the final examination.
Take the final exam
4.) Certificate: A passing grade of 70% or higher on the exam, is required to receive the certificate of completion for this PDH course.
NOTE: After the exam is completed, you will need to return to this page, in order to print (download) the certificate of completion.
Print the Certificate of Completion
Intended Audience: This course is intended for structural, geotechnical, civil, environmental, water resources, and other engineers whose job description requires a comprehensive knowledge of scour testing procedures for cohesive soil conditions.
Publication Source: US FHWA Pub# FHWA-HRT-15-033, May 2015
Print the Certificate of Completion
Intended Audience: This course is intended for structural, geotechnical, civil, environmental, water resources, and other engineers whose job description requires a comprehensive knowledge of scour testing procedures for cohesive soil conditions.
Publication Source: US FHWA Pub# FHWA-HRT-15-033, May 2015
Donald Parnell, PE