s very similar to the Supergrund system; an insulated ring beam system.
This system works by wrapping the perimeter of the foundation in a high strength insulated (EPS 300) ring beam with the enclosed area being filled typically with 300mm of EPS 100 insulation. This system delivers the lowest U-value on the market (as low as 0.08W/m2K) by eliminating thermal bridging by simply wrapping the entire foundation in insulation. It also protects the structure from moisture and mould growth.
Viking House utilises two main types of profile for their insulated ringbeam foundations:
The "Double L" foundation is predominately used in single leaf construction e.g. Timber Frame whilst the "G" foundation is utilised for Block Cavity Construction. To develop a greater knowledge of the Viking House system I feel it is crucial to understand the construction process; in this instance I will examine the construction of a "Double L" foundation.
The Hardcore is compacted ensuring an even and level surface.
Next 30mm of sand binding is placed onto the hardcore, again ensuring it is level and flat; this provides a smooth surface on which the EPS insulation can be laid.
The installation of the EPS 300 insulated ringbeam former can then begin.
Next the EPS 100 floor insulation can be installed in the enclosed area.
Three 100mm layers of EPS 100 are laid ensuring tight fitting around any penetrations e.g. drainage pipes or service pipes.
The radon barrier is then installed and the steel reinforcements are installed in the insulated ringbeam former.
The ringbeam is poured first (weights - in this case planks with blocks are placed either side of the ringbeam former to eliminate any movement), the steel reinforcement can then be installed for the floor slab.
The concrete slab can then be poured.
Here is a simple cross-sectional sketch of the Double L Foundation:
Here is a simple cross-sectional sketch of the G element Foundation:
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