R. E. LAY (CONST.) LTD - Underpinning Foundations

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We Specialise in the Underpinning of buildings suffering from the effects of Subsidence and Heave.

We offer a full Design and Construct Package for all your Underpinning needs.

* Subject to terms & conditions. Please contact R. E. Lay for more details

Underpinning, in broad terms, means the introduction of deeper foundations into ground that can suitably support loads imposed by a structure.

There are two main methods of Underpinning, 'Traditional' and 'Pad & Beam'; Both methods have a proven track record and individual merits.

R. E. LAY (CONST.) Limited can offer both Underpinning methods for the rectification of Subsidence, Slip or Heave effected structures.

A - Existing Footing
B - Dry Packing
C - Reinforced Concrete Beam
D - Anti Heave Material

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Traditional Underpinning
(Typical Cross Section)

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Pad & Beam Underpinning
(Typical Cross Section)

E - Anti Heave Material
F - Mass Concrete Pad
G - Dowel Bars
H - Underpinning Base

Underpinning Sequence, The Traditional R. E. LAY Way

The position and sequence of bases are set out prior to starting for engineers approval. A trench is formed to access below the level of the existing foundation. The foundation is then undermined.

All excavations are hand dug in strict sequence. The excavation is inspected and final trimming is carried out. The dowel bars, Slip membrane and shuttering are fixed. The pin is then concreted ensuring maximum compaction

When sufficiently cured the shutter is struck and Dry Packing is rammed between the underside of the foundation and the top of the pin. The packing is then left to cure before adjoining excavations are carried out

For more information Click the button to contact us.

What Causes a Structure to Subside, Heave or Slip ?
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Our Other Services
[Traditional Underpinning] [Piled Underpinning] [Basement Conversion] [Subsidence Repairs] [Drainage] [Unique Homes]