Methods for assessment of stream-related hazards to highways and bridges.

Material type: Text

TextPublication details: Washington, D.C. : The Administration ; Springfield, Va. : NTIS [distributor], 1981Description: xi, 241 p. : ill., mapsDDC classification:

F 627.40973 MET

Subject: The objective of this report is to develop a procedure that permits evaluation of the relative stability of a river and identification of river-related hazards that can affect a bridge crossing. Techniques are presented that can be utilized by the transportation engineer to evaluate the river hazards at a bridge site, and three examples of the procedure to be used in this evaluation are presented as a guide to its use. The behavior of the river at a bridge crossing depends not only on the stability of that paricular river reach, but also on the behavior of the fluvial system of which it is a part. It is clear that rivers are complex landforms, and therefore a simple and straightforward approach to the identification of river hazards is not always possible. Although detailed studies may indicate that a particular site is stable, nevertheless upstream and downstream changes may affect the future stability of the site. Different types of channels behave and respond differently. Therefore, before a procedure for the recognition of river hazards can be presented with examples of the application of the technique (Chapter 10), it is necessary to discuss river channel types (Chapter 2), river hazards (Chapter 3), and the variables that affect river behavior and the hazards (Chapter 4). Additional chapters and appendices provide information on data source, remote sensing, land use changes and bank stability

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Item type	Current library	Collection	Call number	Status	Date due	Barcode
Books	Australian Emergency Management Library	BOOK	F627.40973 MET (Browse shelf(Opens below))	Available		005723011

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"Final report."

"March 1981."

Includes bibliographies

The objective of this report is to develop a procedure that permits evaluation of the relative stability of a river and identification of river-related hazards that can affect a bridge crossing. Techniques are presented that can be utilized by the transportation engineer to evaluate the river hazards at a bridge site, and three examples of the procedure to be used in this evaluation are presented as a guide to its use. The behavior of the river at a bridge crossing depends not only on the stability of that paricular river reach, but also on the behavior of the fluvial system of which it is a part. It is clear that rivers are complex landforms, and therefore a simple and straightforward approach to the identification of river hazards is not always possible. Although detailed studies may indicate that a particular site is stable, nevertheless upstream and downstream changes may affect the future stability of the site. Different types of channels behave and respond differently. Therefore, before a procedure for the recognition of river hazards can be presented with examples of the application of the technique (Chapter 10), it is necessary to discuss river channel types (Chapter 2), river hazards (Chapter 3), and the variables that affect river behavior and the hazards (Chapter 4). Additional chapters and appendices provide information on data source, remote sensing, land use changes and bank stability

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