Then the fill dirt is added and compacted.
Stem wall concrete slab foundation.
The key difference in this build type is the use of stem walls.
Stem wall slabs are constructed in a multi part process where a footer is poured at virgin ground level then blocks are laid forming a wall up to the finished slab elevation.
This process takes a bit longer than the monolithic slab but a more stable foundation will prevent other issues down the road that could arise with trusses or wall construction.
The stem wall on a concrete foundation is essentially the supporting wall that joins the foundation of a building to the vertical walls of the structure that is constructed atop the foundation.
Depending on the building the stem wall is usually built to the height of three cinder blocks.
The first of these is to build a stem wall of concrete blocks up to the desired slab level.
Finally a slab is poured to the desired level.
With a stem wall foundation the concrete is poured in multiple stages.
The stem wall transmits the load of the structure to the footing which distributes the structure weight over a wider area.
The wall is often constructed with the use of concrete and steel and works with the foundational slab to create a solid basis for the building.
A trench is excavated around the foundation for the construction of the stem wall.