Evaluating Scour at Bridges: Fifth Edition

Arneson, L. A.; Zevenbergen, L. W.; Lagasse, P. F.; Clopper, P. E.; Ayres Associates

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Evaluating Scour at Bridges: Fifth Edition

2012-04-01
By Arneson, L. A. ; Zevenbergen, L. W. ; Lagasse, P. F. ; ...

[PDF-39.47 KB]

English

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Details:

Creators:

Arneson, L. A. ; Zevenbergen, L. W. ; Lagasse, P. F. ; Clopper, P. E.

Arneson, L. A. ; Zevenbergen, L. W. ; Lagasse, P. F. ; Clopper, P. E. Less -
Corporate Creators:

Ayres Associates
Corporate Contributors:

United States. Federal Highway Administration. Office of Bridges and Structures ; National Highway Institute (U.S.)

United States. Federal Highway Administration. Office of Bridges and Structures ; National Highway Institute (U.S.) Less -
Subject/TRT Terms:

[+]

Bridge Abutments Bridge Design Bridge Piers Bridges And Other Structures Design Erosion Highways Hydraulics And Hydrology I24: Design Of Bridges And Retaining Walls Rocks Scour
Publication/ Report Number:

FHWA-HIF-12-003
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Fifth Edition
Corporate Publisher:

National Highway Institute (U.S.)
Abstract:

This document is the fifth edition of HEC-18. It presents the state of knowledge and practice for the design, evaluation and inspection of bridges for scour. There are two companion documents, HEC-20 entitled "Stream Stability at Highway Structures," and HEC-23 entitled "Bridge Scour and Stream Instability Countermeasures." These three documents contain updated material from previous editions and continued research by NCHRP, FHWA, State DOTs, and universities. This fifth edition of HEC-18 also contains revisions obtained from further scour-related developments and the use of the 2001 edition by the highway community. The major changes in the fifth edition of HEC-18 are: expanded discussion on the policy and regulatory basis for the FHWA Scour Program, including risk-based approaches for evaluations, developing Plans of Action (POAs) for scour critical bridges, and expanded discussion on countermeasure design philosophy (new vs. existing bridges). This fifth edition includes: a new section on contraction scour in cohesive materials, an updated abutment scour section, alternative abutment design approaches, alternative procedures for estimating pier scour, and new guidance on pier scour with debris loading. There is a new chapter on soils, rock and geotechnical considerations related to scour. Additional changes include: a new approach for pier scour in coarse material, new sections on pier scour in cohesive materials and pier scour in erodible rock, revised guidance for vertical contraction scour (pressure flow) conditions, guidance for predicting scour at bottomless culverts, deletion of the "General Scour" term, and revised discussion on scour at tidal bridges to reflect material now covered in HEC-25 (2nd Edition).
Format:

PDF
Funding:

DTFH61-00-D-00010
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha-512:6ec02b48f68f9bf31ce3029bf1e06e6a54cf49741d5453641d08ee731686df849cba3b8f2e60f5bc5b90977ee9d5ae0cb5281d76e4ce9405866953496bc4d979
Download URL:

https://rosap.ntl.bts.gov/view/dot/42053/dot_42053_DS1.pdf
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Evaluating Scour at Bridges: Fifth Edition

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