The foundations are a very important part of any project as they transfer the weight of the proposed building to the ground.
‘Foundations’ is a word generally used to differentiate that part of a project. Every property has a unique set of foundations set out to the specific requirements of the site.
All buildings are required to have some kind of foundation to walls, piers or columns, so as to transfer the column loads directly to the ground.
They are used as a starting point in any project usually specified by a structural or foundation engineer so that they are the most suitable for your construction.
If extending you will be required to have exploratory work carried out to specify your existing foundations to ensure you do jot compromise your foundations for your existing house. But also to ensure that whats specified is suitable for the soil type.