Deep basements in cities around the UK

Most new construction in congested cities involves going down as well as up. There is often as much of the structure below ground as there is above. Concrete retaining walls contain the basement and must be monitored whilst the earth inside them is removed and the substructure is formed.

Geotechnical Observations can measure displacements of the retaining walls manually using an inclinometer probe or automatically using SAAs.  Where props are used to support the walls the loads in them can be measured using strain gauges.