Graphical Construction Glossary >> Temporary Work. >> shoring >> Needled Raft Slab

Needled Raft Slab
In underpinning. An integrated raft slab and cantilever reinforced concrete needles sat on micro piles.

cantilever needle beams and 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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Adam Smith 1723-1790

"When we build, let us think that we build for ever."John Ruskin 1819-1900

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Please Note! The information on this site is offered as a guide only!  When we are talking about areas where building regulations or safety regulations could exist,the information here could be wrong for your area.  It could be out of date!  Regulations breed faster than rabbits!
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