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Books > Professional & Technical > Civil engineering, surveying & building > Hydraulic engineering
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Scour Manual - Current-Related Erosion (Hardcover)
Loot Price: R4,466
Discovery Miles 44 660
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Scour Manual - Current-Related Erosion (Hardcover)
Expected to ship within 12 - 19 working days
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Ever since the publication in 1997 the original Scour Manual has
helped many practising hydraulic engineers to deal with scour
processes near hydraulic structures. In recent years new insights,
such as probabilistic calculations, offered new opportunities to
design structures more economically. These new insights are
included in this update of the original Scour Manual, which is
focussing entirely on current-related scour. This manual provides
the engineer with useful practical methods to calculate the
dimensions of scour holes in the pre-feasibility and preliminary
stages of a project, and gives an introduction to the most relevant
literature. This updated Scour Manual contains guidelines that can
be used to solve problems related to scour in engineering practice
and also reflects the main results of all research projects in the
Netherlands in recent decades. The so-called Breusers equilibrium
method has a central role, which can basically be applied to all
situations where local scour is expected. The method allows to
predict the scour depth as a function of time, provided that the
available knowledge about scour at the specific structure is
sufficient. For structures with insufficient knowledge available,
alternative scour prediction rules are presented. The treatment of
local scour is classified according to the different types of
structures. Each type of structure is necessarily schematised to a
simple, basic layout. The main parameters of a structure and the
main parts of the flow pattern near a structure are described
briefly insofar they are relevant to the description of scour
phenomena. New scour formulas for the equilibrium scour have been
elucidated. Evaluating a balance of forces for a control volume, it
is possible to develop scour equations for different types of flow
fields and structures, i.e. jets, abutments and bridge piers. As
many scour problems are still not fully understood, attention is
paid to the validity ranges and limitations of the formulas, as
well as to the accuracy of the scour predictions. This information
can also be used to carry out a risk assessment using a safety
philosophy based on a probabilistic analysis or an approach with a
safety factor. Moreover, the information on the strength of soils
is extended and aspects are addressed such as scour due to shear
failures or flow slides, that can progressively damage the bed
protection which might lead to the failure of hydraulic structures.
This updated Scour Manual presents scour prediction methods and
deals with practically related scour problems. Consultants and
contractors were invited to provide case studies of realized
projects, including the methods that were followed. These case
studies will help with grasping the concept of scour by the flow of
water. This manual provides the engineer with the latest knowledge
and with case studies that show how to apply the formulas and their
limitations.
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