Scour Manual: Current-Related Erosion

The original Scour Manual, published in 1997, has helped many practicing hydraulic engineers deal with scour processes near hydraulic structures. This updated version includes new insights such as probabilistic calculations, offering new opportunities to design structures more economically. It provides practical methods to calculate scour hole dimensions in the pre-feasibility and preliminary stages of a project and introduces the most relevant literature. The Breusers equilibrium method is central to the manual, allowing to predict scour depth as a function of time for structures with sufficient knowledge. For structures with insufficient knowledge, alternative scour prediction rules are presented. The treatment of local scour is classified according to different types of structures, and new scour formulas for the equilibrium scour have been elucidated. The manual also addresses the validity ranges and limitations of the formulas, as well as the accuracy of scour predictions, and extends the information on the strength of soils to include scour due to shear failures or flow slides. Case studies of realized projects are provided to help with grasping the concept of scour by the flow of water.

Format: Paperback / softback
Length: 278 pages
Publication date: 26 September 2022
Publisher: Taylor & Francis Ltd

Since its publication in 1997, the original Scour Manual has been a valuable resource for practicing hydraulic engineers, aiding them in understanding and addressing scour processes near hydraulic structures. In recent years, significant advancements in knowledge, including probabilistic calculations, have opened up new possibilities for designing structures more economically. These innovative insights are seamlessly incorporated into this updated version of the original Scour Manual, which exclusively focuses on current-related scour. This manual serves as a practical tool for engineers, providing them with effective methods to calculate the dimensions of scour holes during the pre-feasibility and preliminary stages of a project. It also offers an introduction to the most relevant literature in the field.

This updated Scour Manual not only provides guidelines for solving scour-related problems but also reflects the significant findings of research projects conducted in the Netherlands over the past decades. The Breusers equilibrium method plays a central role in this manual, as it can be applied to virtually all situations where local scour is anticipated. By utilizing the Breusers equilibrium method, engineers can predict the scour depth over time, assuming that sufficient knowledge about scour at the specific structure is available. However, for structures with limited available knowledge, alternative scour prediction rules are presented to ensure accurate predictions.

The treatment of local scour is organized based on the different types of structures encountered in engineering practice. Each type of structure is simplified to a basic layout to facilitate understanding. The primary parameters of a structure and the key aspects of the flow pattern near a structure are briefly described, ensuring that only the relevant information is included in the description of scour phenomena. Furthermore, new scour formulas have been elucidated to enhance the understanding and calculation of equilibrium scour.

By evaluating a balance of forces for a control volume, it becomes possible to develop scour equations that describe the equilibrium scour phenomena. These equations take into account the various forces acting on the structure, including hydrostatic pressure, shear stress, and drag force. By understanding and applying these scour equations, engineers can accurately predict the dimensions of scour holes, assess the stability of structures, and optimize their designs to minimize the risk of scour-related issues.

In conclusion, the updated Scour Manual is a comprehensive resource that caters to the needs of practicing hydraulic engineers, offering valuable insights and practical methods for addressing scour processes near hydraulic structures. By incorporating the latest advancements in knowledge and incorporating a structured approach to scour analysis, this manual empowers engineers to make informed decisions and design structures that are both economically viable and resilient to scour-related challenges.

Weight: 664g
Dimension: 245 x 171 x 18 (mm)
ISBN-13: 9780367675974