concrete retaing walls for basement (hawthon)

(ABOVE PHOTO),Can see underpinning(huge steel rods driven deep into the gound on 45d angles maintains footings strength from the forces produced by the earths pressure to push into the excavation

This series of photos gives a great insight into the importance of maintaining faces during construction

the excavation is situated on a corner block that has a road quite close to the excavation therefor this process of retaining the walls of the basement excavation is crutial
i was able to see this process in action upon a site visit, the concrete was sprayed on the areas of the wall between the concrete columns. very interesting to see