Foundation blocks can be used to support 3 storey constructions

They are suitable for the support of solid or cavity walls, framed construction or suspended floors, including beam and block

Other benefits of using these blocks are enhanced thermal performance, frost resistance, being lightweight (up to a third of an equivalent dense aggregate block) and speed of construction as only one wall has to be set out and there is no need for wall ties or lean mix fill
Internal and External leaf of cavity walls
External solid wall construction
Multi Storey Buildings
Foundations/Below ground level DPC
Beam and Block Floors x 100mm Thickness