Diy Concrete Foundation
Use the right Materials for your DIY Concrete Foundation!
DIY concrete foundation building is probably the least attractive of all concrete projects. At the same time, you need to realise that any DIY concrete foundation will be critical to the success of any do-it-yourself building project. If your DIY concrete foundation is not constructed correctly, using the right materials and the right techniques, there's a good chance the structure you build on top of it will collapse.
The foundations of any structure, whether a small garden structure or a huge house, are the most important element. This means that they must be designed and built so that they can carry the required load.
The mass of any structure is spread over the width of its foundations (which is also known as the substructure), which means that the mass is distributed over a much greater area. But the size of a substructure depends not only on the size and mass of the structure above it, but also on the soil conditions. The better the load-bearing capacity of the soil, the narrower the foundation can be.
If your site is very sandy, it is a good idea to flood the ground once you have dug your trenches. This will help to compact the base and improve cohesion when you place your fresh mix. If you soil is full of clay, it is usually best to ask an engineer for guidance.
There are several different types of substructures including strips and slabs. Both words describe these types accurately. Strips are very common, and may be used for buildings or garden structures. First step is to dig a trench and then the mix is thrown inside the trench and compacted and levelled. Usually the finished thickness for a wall will be at least 200 mm and the width no less than 600 mm. A good rule of thumb (which is a simple way of estimating how to build things) is that the width should equal the thickness of the wall plus twice the thickness of the finished concrete. This will, in effect produce a 45 degree angle between the base of the wall and the bottom edge of the footing.
Sometimes strips must be stepped, because the ground slopes. Remember that the higher portion should always overlap the lower one for a distance that is at least equal to the vertical thickness of the foundation.
Slabs are bigger than strips and usually not quite as thick as other types of DIY concrete foundation.