Economic design of foundations: ICE MOGE 2nd edition updates for Chapter 51 to 57

Synopsis

Shallow foundations are often simple and easy to construct and offer a more economic and sustainable solution than deep foundations when site conditions are appropriate. Unfortunately, current design practice often leads to shallow foundations being considered inappropriate. The authors will debate their pro’s/con’s and draw on the recent edition of MOGE to highlight potential opportunities and pitfalls. Some of the changes in the Foundation Design section of MOGE will also be illustrated:

• Overview of risk management, getting the concept right early and approaches to achieve economic and low carbon foundations.
• New methods of shallow foundation design – bearing capacity under combined loading and settlement assessment.
• The opportunity for economy with Piled Rafts.
• Further guidance on driven piles. Benefits and some common risks.
• Design of pile rock sockets.
• Calculation of moment restraint in small pile groups.
• A simple method for partially rigid large pile groups.
• Global ground movements and their impact on piles.