wythe(A typical precast concrete sandwich panel consists of two precast reinforced concrete layers (called wythes) separated by a layer of insulation and connected with connectors which penetrate the insulation layer. ana_tiziana)
sandwich panels(Sandwich panel is a structure made of three layers: low density core inserted in between two relatively thin skin layers. This sandwich setup allows to achieve excellent mechanical performance at minimal weight. The very high rigidity of a sandwich panel is achieved thanks to interaction of its components under flexural load applied to the panel: core takes the shear loads and creates a distance between the skins which take the in-plane stresses, one skin in tension, the other in compression. WK Alexander Demidov)
