Figures 4 9 through 4 11 and 4 15 show configurations with insulation on the exterior surface of the foundation.
Concrete floor slab section detail.
Both pre cast concrete planks or slabs can be used as well as cast in situ reinforced slabs along with beam and block systems.
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Beam and block floor.
The ground floor is made up of suspended concrete slab or beam and block floor supported by the external and internal load bearing walls which transfer the loads to the foundations below.
The reinforced concrete floor slab is kept free of the perimeter walls.
Figures 4 12 through 4 14 show variations where the slab is the primary location for insulation.
Under slab vapor retarders or waterproofing membrane.
Floor slab detail.
Smooth out any gaps or voids while applying the tape.
In typical office environments the concrete floor slab itself is comprised of 4 to 6 thick concrete reinforced with one layer of welded wire fabric at mid depth unless below the water table when hydrostatic heads may exert upward pressure requiring stronger construction.
It consists of a series of slab thickenings under the walls with a minimum 12 deep downstand on the perimeter.
4 2 slab on grade construction details in this section several typical slab on grade sections are illustrated and described.
It will cost only pennies if you can cut out the damaged section and reuse the tubing later in a floor joist application.
Top section back and apply the fab tape 4 back and parallel to the edge of the bottom section.
There are many approaches to insulating a radiant slab but the detail at right shows a frequently used method.