Lightweight construction panelling - has common form interlocking rounded teeth on sheet edges

摘要

The sheets are of any polygonal shape required and are made of a material with elastic properties. Along each side are series of equal extensions (5), the base length of the extensions being equal to the gaps between extensions (a). The extensions increase their width as they extend with a concave curvature (r1) and terminate with small convex radii (r2) at the outer corners. Two sheets are interlocked at right angles to each other, then moved coplauarly to lock in position. The panels are particularly for forming the framework of a swimming pool lined with a waterproof layer.