Underpinning of buildings is common practice. Buildings settle due to all sorts of reasons. Investigation usually arrives at one of the following to be the cause of building settlement and subsequent foundation distress or failure:
Underpinning is considered remedial work, requiring the stabilisation or reinstatement of existing foundations and footings. This is done using such techniques as piling, microfine cement grout injection or mass concrete pads. The recommended process in determining the extent of, and how to best rectify the problem is stated below:
There are two main methods of stabilisation; piling and microfine cement grout injection. Both work well and are very efficient. The use of one or the other will depend on may factors such as water table height, soil type, required depth of stabilisation, machinery needed and type of access and environmental restitution work. Our engineers will take all of this into consideration when recommending the best solution. Our company, Screwpile Australia specialises in screwpiles and augured pile solutions, whilst our company Fondex specialises in microfine cement grout injection processes.
There are as many causes as there are way to fix the problem. Our engineers will provide you with what they consider the best solution. Email us for further advice.