See our work
To identify your stabilization needs or to see how we work, it’s always interesting to compare with what has already been done.
STRAIGHTENING AND STABILIZATION OF FOUNDATION BY INSTALLATION OF STEEL PILES
The technique
This technique consists of anchoring to the base of the existing wall (hence the importance of the good behavior of the latter) with the help of hooves attached to the walls. High-corrosion-resistant (HP grade) steel poles passing through these hooves are driven into the ground using our powerful hydraulic equipment.
During the operation
In the vast majority of cases, the piles are driven into the ground until refusal, that is to say when the head of the pile reaches the rock and refuses to sink deeper. In rare cases, the soil friction surrounding the pile walls may be sufficiently high to ensure the stability of the structure. This situation is obtained when the rock is very deep, which is rarely in the St. Lawrence Plain, where the rock is at an average depth of 20m. In addition, an engineer specialized in soil mechanics will have to approve such a work. It is also strongly recommended to pile an entire building, even if the damage appears to be local, as there is no guarantee that the soil is homogeneous.
Once the refusal is reached
Once the refusal is reached, the pile is welded to its wall anchor. It should be noted that in addition to the upper and lower welds, a central weld is made in the center of the shoe, so as to ensure a flawless grip. Finally, the pile cavity is filled with concrete, in order to consolidate the latter.
Types of techniques
Of course, the technique of laying steel piles differs according to the type of wall and the type of intervention that must be performed.However, it is important to note that this technique is widely used in cases of stabilization because it generates no vibration that can affect adjacent structures, while requiring a minimum of space. The cases presented later take into account the soil conditions of the Laurentian Plain, and propose a scan ranging from the most common cases to the most particular cases.
Know how to distinguish a foundation problem
Subsidy program
The City of Montreal has announced the reinstatement of the Foundation Stabilization Grant Program for Montreal Residential Buildings starting in June 2013. For more information, see the press release by clicking here.
SHARED FOUNDATION?
In the case of joint ownership, it becomes possible to pile inwards foundations. The case of joint ownership pose other major problems, including the joint responsibility of the owners towards the wall, especially when the latter is in solidarity with both buildings. Straightening a joint wall will only be possible if the two owners involved have the foundations completely piled, otherwise the wall will be stabilized, without being straightened, at the expense of the owner executing the work.
Need for straightening and stabilization?
You can write to us or call us. It will be a pleasure to help you.