PILING IN weak rocks and temporary propping of deep excavations are the subject of two new publications from CIRIA.
Piling in weak rocks provides a definition of weak rock and considers ways of investigating and classifying it for design. It examines four design methods with worked examples and five case studies.
It includes recommendations for improving practice through geotechnical modelling, pile selection, pile design and procurement and emphasises the need for improved communications between the structural designer, pile designer and piling contractor.
Temporary propping of deep excavations - guidance on design covers the efficient and safe design of single- and multi-propped excavations of varied geometry and flexible and stiff walls in UK ground conditions.
Current methods of determining the prop load and of design are reviewed and the book concludes with a summary of recommendations.