Gives descriptions and advice concentrating on practical details of foundations, basements and external works. Foundations and basements includes is all work below DPC level, including strip foundations, piles, retaining walls to basements; but not including ground floor slabs or rafts, and building services within the footprint of the building. Included in external works are all items outside the building footprint but inside the site boundary, encompassing wastewater and surface water drains, supply of utilities (e.g. gas, electricity and cabled services), footpaths, and access for vehicles including car parks and hard standings to be found in the vicinity of buildings. Perimeter and freestanding boundary walls are also dealt with, as is security fencing and, in outline only, lighting. This is not a manual of construction practice, nor does it provide the reader with the information necessary to design foundations, basements or external works. Both good and bad features of these elements are described, and sources of further information and advice are offered.