Graphical Construction Glossary >> Temporary Work. >> shoring >> Needled Raft Slab
Note! The above sketch is an indication only and the piers would be deeper and the rebar is a brief indication only.
Above is a sketch of a section through the base of an external or load bearing wall. This is a method of underpinning by combining cantilevered concrete needle beams sat on micro piles, into a new raft slab.
This method is particularly useful for basements and where there is no access to the outside. Inner city street frontages or adjoining (terraced) properties
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