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Efficient design of piled foundations for low-rise housing: design guide (NF21)

Overview

This guide considers various design approaches for piled foundations and the associated environmental and economic advantages.

The selection and design of piled foundations is explored with reference to the relevant design codes, standards and guidance. The guide addresses some of the main environmental issues and impacts of foundations and considers the potential benefits from use of energy piles.

Summary of content

This guide has been prepared to provide housing sector guidance for the use of piled foundations for low-rise housing developments.

It is primarily intended to promote efficient design of piled foundations, and discusses specific guidance for the selection and efficient design of piled foundations, with reference to the relevant design codes, standards, and guidance that were current at the time of publication. The design of efficient foundations for low-rise housing in the UK has also been discussed in a more general sense.

A review of current practice was undertaken during the preparation of this guide and the results of the review were used to identify areas where additional guidance would be useful. The guide attempts to address these areas, in particular in relation to the selection of foundations, site investigation practice, and design and construction methods for piled foundations.

Reflecting the increasing emphasis on environmental issues, this guide also addresses some of the main considerations in this regard. It deals with the environmental impacts of foundations in broad terms, and places some emphasis on the assessment of embodied carbon. Sustainability is also considered in terms of the potential benefits from use of energy piles.