Author: The Institution of Structural Engineers
26 October 2012
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The Institution of Structural Engineers
(This article was updated in October 2016 to reflect errata issued since its original publication.)
When designing foundations for a structure there is a need to determine the bearing capacity of the soil. This applies to all forms of foundation, from a simple pad footing to a pile cap. The bearing stress capacity of the soil is the key variable that has a direct impact on the form and size of foundations. This Technical Guidance Note explains the principles of how bearing capacity of soils are determined and how it impacts on the design of foundations.
This guidance note describes the different types of pile presently in use, the design concepts that are employed when determining their size and depth, how they are constructed and the various tests that can be carried out to assess a pile's integrity.
This Technical Guidance Note is an introduction to the assessment of floor vibrations. Since the adventof lighter structures that have longer spanning elements within them, the built in dampening effectbuildings have had historically has become less pronounced. Despite this, floor vibration canbe an overlooked criterion during the design process. This can lead to expensive remedial works being carried out on structures after they have been built, as occupants complain of discomfort due to excessive movements and vibrations. (This article was updated in October 2016 to reflect errata issued since its original publication.)