Open Excavations ~ one of the main problems which can be
encountered with basement excavations is the need to provide
temporary support or timbering to the sides of the excavation.
This can be intrusive when the actual construction of the basement
floor and walls is being carried out. One method is to use battered
excavation sides cut back to a safe angle of repose thus
eliminating the need for temporary support works to the sides of
the excavation.
In economic terms the costs of plant and manpower to cover the
extra excavation, backfilling and consolidating must be offset by
the savings made by omitting the temporary support works to the
sides of the excavation. The main disadvantage of this method is
the large amount of free site space required.
Basement Excavations