This value corresponds to the amount of compressive stress that must be applied to compress an insulation material by 10%. It is well suited for comparing insulation materials with each other in terms of compressive strength, but this is a value measured in the laboratory in accordance with DIN EN 826 and is not relevant for the structural engineer. Static verifications on a specific object must always be carried out with the design value of the compressive stress specified by the manufacturer, which is much lower.
Foam glass as an insulating material is considered an absolutely compression-free material and is therefore separately regulated in DIN EN 826 Annex A. Values here reflect the failure point of the insulation board.
Unit: kPa
Source: bauwion
