SEISMIC FOUNDATION PILLOW
The foundation pillow designed for seismically active regions with design ground acceleration above 0,1g.
The SEISMIC foundation pillow is an assembly composed of the reinforced concrete foundation slab, thermal insulation and waterproofing. All its layers are permanently joined into a whole.
Contemporary energy efficient buildings are constructed without thermal bridges. This means that the entire building is protected with a continuous and durable thermal insulation envelope. An important factor of the protective envelope is the SEISMIC foundation pillow, as it prevents uncontrolled movement of the different layers as well as settlements during strong earthquake shocks. The pipework which penetrates the foundation pillow remains undamaged.
The grooves on the SEISMIC thermal insulation boards' top surface are a special feature of the SEISMIC foundation pillow.
For such demanding applications, the thermal insulation must be tested and approved for use under permanent loads, such as with the ETA – European Technical Assessment.
Double-layered SEISMIC foundation pillow
In regions with ground acceleration ag above 0,1g, double-layered thermal insulation of the foundation slab should be installed with the double-sided self-adhesive waterproofing enclosed between the two thermal insulation layers.
Single-layered SEISMIC foundation pillow
In the single-layered solution of the foundation pillow, SEISMIC thermal insulation boards with grooved surface are used.
The waterproofing layer is installed onto the foundation slab, as installation on the coarse levelling concrete in earthquake prone regions allows for unwanted damages of the waterproofing.