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TRB's National Cooperative Highway Research Program (NCHRP) Report 568: Riprap Design Criteria, Recommended Specifications, and Quality Control examines design guidelines; recommended material specifications and test methods; recommended construction specifications; and construction, inspection, and quality control guidelines for riprap for a range of applications, including revetment on streams and riverbanks, bridge piers and abutments, and bridge scour countermeasures such as guide banks and spurs.
The objective of this study was the development of criteria and design procedures for the use of aggregate riprap linings, which consists of a layer of discrete fragments of rock of sufficient size to resist the erosive forces of the flow. The design of such riprap-lined drainage channels involves the interrelationship between the discharge, the longitudinal slope, the size and shape of the channel, and the size distribution of the riprap lining. This report describes these interrelationships and develops design criteria by which a riprap-lined drainage channel can be proportioned and the riprap lining can be specified for a given discharge and longitudinal slope. The relationships so developed have been reduced to design charts, the use of which permits rapid and simple establishment of channel shape and size as well as of the properties of the riprap lining.
Introductory technical guidance for civil engineers and construction managers interested in rip rap protection for flood channel protection. Here is what is discussed: 1. INTRODUCTION 2. RIP RAP CHARACTERISTICS 3. SIDE SLOPE INCLINATION 4. CHANNEL ROUGHNESS, SHAPE, ALIGNMENT, AND GRADIENT 5. GENERAL DESIGN GUIDANCE FOR STONE SIZE 6. DESIGN CONDITIONS 7. STONE SIZE 8. REVETMENT TOP AND END PROTECTION 9. REVETMENT TOE SCOUR ESTIMATION AND PROTECTION 10. REVETMENT TOE PROTECTION METHODS 11. REVETMENT TOE PROTECTION DESIGN 12. DELIVERY AND PLACEMENT 13. ICE AND DEBRIS 14. VEGETATION 15. QUALITY CONTROL.
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RIPRAP is a widely used engineering method for protecting river banks and coastlines from erosion. This book studies the fundamental issues and problems concerned with various aspects of this method of erosion control.