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  Acton Park Estate, 203-205                  The Vale, W3 7QS London  

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Underpinning Foundations And Basement In London

Underpinning is a method in which you strengthen and reinforce a building base, which, if no action has been taken, can potentially be harmful. It is an excellent way of raising the thickness of the base. If your underpinning contractors in London want to add more stories to a building, this can be done. Tree roots could also damage the foundation and use this method for correction.

The adjacent construction may have lower-than-existing foundations requiring lowering. If basements are built very close to an existing building, it may be necessary to change the foundation.

The reason is the existing house’s stability. Cracks may appear up to the base in a building and therefore need a remedy for the foundation.



Mass Concrete Underpinning London Method  

Also known as the Pit Process, underpinning Mass Also known as the Pit Process, underpinning Mass Concrete is the most common and the oldest of all methods or underpinning a house in London. This underpinning process involves drilling holes along the building’s external wall at fixed times and depth below the current base. After a quick review of any potential problems, underpinning contractors in London will fill the pits with concrete, leaving sufficient space for future dry packing.
When underpinning a house in London, dry packaging aids are used for balancing the building’s weight and restoring a collapsing frame. In buildings where the original foundation was built on deep ground, mass concrete underpinning is used. It is a more cost-effective method because, in excavations, less hardware is used.

Base and Beam Underpinning London

When underpinning a house in London, this method of aid is more of an addition or an improvement to the Mass Concrete process. This form of underpinning involves the construction under the current base of a single concrete beam to provide power. Instead of pouring concrete into open pits as in Mass Cement, the underlying frame and beam use steel bars to support them. The process involves digging holes along the outside wall and covering them with cement at fixed intervals, lowering metal frames into the pits. The effect is cement beams reinforcing existing structures and thus a better frame. This underpinning approach, often used for underpinning foundations in London where buildings require additional floors and require architectural use change. It is used in foundations both shallow and deep.

Pile and Beam Underpinning London

For limited access systems that require deep foundations, this underpinning method is popular, with underpinning contractors in London often favouring it for many reasons. The process begins by digging a hole under the earth and through the existing wall of the base. Underpinning in London using this method involves a hole that is designed to support a vertical concrete needle beam in the delivery of the load. Piles are then mounted with a steel frame for support on opposite sides of the gap or either side of the foundation wall. With the needle beam going through the hole in the wall, the piles are then attached, firming up support. To fill gaps and add support to the beam, cement is applied. This process is used to move the existing load to a more secure and strengthened base from the initial framework. Others method of underpinning are:

Mini Piled Underpinning London

Underpinning contractors in London use this method, underpinning by cantilever needle beam method, and Pre-test method of underpinning.