When it comes to house construction, building foundations is the vital starting point. Your foundations will effectively distribute your new home’s weight and prevent the spreading of the subsoil. This prevents an unequal settlement of the structure that could result in structural problems in the long run. Richard Earls Construction LLC will give you more ideas and knowledge about House Foundation and construction works.
Since mistakes at this stage can turn out to be pretty expensive, it’s prudent to double-check every measurement, list them on the plans, and ensure that everyone is working from that. Be prepared to become flexible in case the excavation process brings out some unexpected ground conditions.
So, regardless if you wish to have an idea of what your builder is about to do, taking on the project yourself, or you’re project managing, you can use this guide to lay out your building foundations. Generally, you will need:
– Compressible material to line the trenches
– Mesh reinforcement in the concrete of the foundation
– Cut metal pins to apply as markers
– A polythene slip membrane
– To be familiar with any lead-times. In case the engineers have made a foundation that needs reinforcement cages, they might need to be produced off-site
– Many pairs of wellies and rakes
– To think of a way to get the services into the property. Therefore, get some ducting or lengths of pipe to take through the foundation concrete
1. Begin by Marking Out Your Level Datum Point
Basically, a datum point is a reference point from which more measurements can be made. This point can depend on a benchmark, an existing building, or a finished floor level. Since this datum point is essential, each height measurement is relative to this particular point. That means that any errors could lead to future issues, especially if there’s a height restriction on that building.
2. Determine the Material You Need to Move
Measure the amount of material that requires to be removed from that site to return at the finished floor level after each layer of flooring material (screed, concrete, and insulation) has gone down. At this stage, time spent with a site-level will make things much easier in the future when the digger might not reach the places that haven’t been dug deep enough.
3. Mark Out Your Foundations Using String Lines
Begin by marking out the walls. Create timber obstacles at the end of every wall, far from where the digger will require to be. Where there’s limited space, make use of corner pins and create the hurdles once the concrete is in.
4. Marking Out the Trenches
By referring to your specific datum point, start lining up your footings. If it is the extensions, don’t assume an existing structure is square; choose the side you want to be square, then create a line, and square off that line. Using Pythagoras’s theorem is the simplest way to do this. However, a majority of modern laser levels come with a square function that does all of this.
5. Mark Every Corner
If you have two lines created at 90°, every other measurement can be derived from this point, as long as all junctions and corners are marked. Check the width of your walls and give some room of about 150mm for both sides. With the string line as your guide, use the marker paint to mark the trenches.
6. Dig the Foundation Trenches
You are now ready to begin digging. Ensure that your site level is set to the depth you want to dig and check it regularly. The building control inspector will then determine how far down you have to go; they’ll inspect at this stage and then advise you.
Most of the time, building foundations are the riskiest aspect of a building project. With these simple steps, you now have an idea of what building foundation entails.