Double walls consist of two thin precast concrete formwork layers which are joined by lattice girders.
Nirvana is an insulated concrete sandwich panel system that maximises thermal efficiency by combining insulation with high thermal mass properties of concrete. Nirvana connector pins lock the insulation layer between the internal structural concrete layer and the external concrete layer (wythe).
They are made from pultruded epoxy back-boned resin for maximised corrosion resistance and interlaminar shear strength. The pins are placed at a maximum of 600mm centres in a grid pattern and closer around perimeters of openings.