An exterior wall must be placed on the outside edge of the slab so the exterior siding laps down and over the edge of the slab.
Slab on grade concrete block wall section.
The major structural components of a slab on grade foundation are the floor slab itself and either grade beams or foundation walls with footings at the perimeter of the slab see figures 4 2 and 4 3.
Figures 5 and 6 show concrete masonry stemwalls with masonry and with frame above grade walls respectively.
When building stem walls block courses on footings are set below grade and reinforced with rebar before concrete is poured in a continuous pour for a seamless integral slab.
Because the wall is exposed to soil on both sides waterproofing or dampproofing coatings are generally not required.
From the below fig it is clear that the wall stands on a footing and the grade slab is resting on a layer of gravel and moisture barrier.
4 2 slab on grade construction details.
This prevents water from leaking under the bottom of the wall to the inside of the building.
Consider a wood shed floor treated lumber joists and plywood.
Figures 4 9 through 4 11 and 4 15 show configurations with insulation on the exterior surface of the foundation.
In some cases additional footings often a thickened slab are necessary under bearing walls or columns in the center of the slab.
Once this concrete has cured it will have created a bond between the block rebar and concrete slab forming a single structural unit and the rest of the blocks can be laid as normal.
Conceptual wall section brick block cavity wall october 12 2015 01 030 0201.
In this section several typical slab on grade sections are illustrated and described.
The stem wall supports the building loads and in turn is supported directly by the soil or a footing.
Figures 4 12 through 4 14 show variations where the slab is the primary location for insulation.
Fill the block cells empty cavities with concrete up to the top of the first course and trim with a trowel.
A stemwall with slab on gradesupports the wall above and often also provides a brick ledge to support an exterior masonry veneer.
Wall system brick veneer cmu backup rigid insulation fluid applied ab.
Supported slab on grade grade slab.
Zip postal code.
One story wall section with crawl space has cad.
Exterior wall on slab must be out on the edge.