WALL PANEL Russian patent published in 1995 - IPC

FIELD: civil engineering. SUBSTANCE: wall panel comprises outer 1 and inner 2 structural layers, and connecting ribs 3. Arranged between the structural layers is a layer of warmth-keeping material of variable thickness 4 and 5 while the cavity between the layer of warmth-keeping material and the inner structural layer is filled with friable material 6 separated from layer 2 by hydraulic- insulation layer 7 of a layer or effective warmth-keeping material. EFFECT: lower material content of panel structural layers, particularly of inner structural layer. 2 cl, 3 dwg