Take a Detailed Look at the Practice of Drystone Retaining Wall Construction
Drystone retaining walls make very efficient use of local materials, and sit comfortably in their environment. They make an important contribution to heritage and to the character of the landscape, and are loved by many people who value the skill and ingenuity that has gone into their construction, as well as simply how they look.
And yet, in engineering terms, they are complex. They can deform significantly as their loading changes and their constituent stones weather. This gives them ductility—they deal with changes by adapting to them. In some ways, they behave like conventional concrete retaining walls, but in many ways they are better. They cannot be designed or assessed correctly unless these differences are understood.
Implementing concepts that require no prior knowledge of civil engineering, the authors:
Drystone Retaining Walls: Design, Construction and Assessment draws on theoretical work and full-scale practical testing to explain how these structures work, without presuming that the reader has received an engineering education. The book goes on to give enough detail to give the professional engineer confidence in the methods used in design and assessment, and insight into what matters most in the way in which drystone retaining walls are built. It shows how to design new or replacement drystone retaining walls that are efficient, sustainable, attractive, and in keeping with the character of the area where they are built, and demonstrates how to make fair assessments of existing walls.
"This book will offer practical advice to those responsible for transport networks which will include drystone retaining walls. It will greatly assist the understanding and future management and maintenance strategies for such structures."
—Richard Fish, Civil Engineering Consultant
Uses of drystone retaining walls
An introduction to the behaviour of simple earth retaining structures
The behaviour of soil
The fundamental requirements of a gravity retaining wall
Earth pressure calculations
Limit equilibrium analysis
Behaviour of drystone retaining structures
Transmission of forces within a drystone wall
The effect of loading at the ground surface
The effect of the rough back face
Wall deformations and their implications
Vertically orientated stones and bending resistance
Construction styles using rounded stones
The effects of a tightly constructed face
Analysis and design
The distinction between analysis and design
The distinct element method
Limit equilibrium analysis
Yield design analysis
Summary of analytical methods
Building in drystone
Building a drystone retaining wall
The scope and purposes of assessment
Methods of assessment – observation and interpretation
Design charts – to enable initial sizing