Panel, in particular for self-supporting roof structures and self-supporting roof structures assembled of such panels

摘要

Hollow panel of extruded plastics for walls and roof structures and having at least two main ducts (la, 1b; 2a, 2b; 3a, 3b) separated by a secondary duct which may be divided into three or more subducts (23, 24, 25, 26), one of which (26) may be dimensioned so as to accommodate an anchor bar (29) intended for absorbing upwardly directed wind pressure. Each of the main ducts is divided into two channels by a thinner intermediate wall (4, 5, 6) which may extend through the secondary duct or ducts to give them greater stability;while at the same time ensuring a good insulation.;A plurality of panels can be assembled into, e.g., a self-supporting arcuate roof surface, the panels being provided with coupling members (19, 20, 21, 22) forming together locking ducts wherein locking wedges or reinforcing bands (38) of metal are inserted.;The subducts of the panels are so designed as to be able to resist pressure and torsional forces without using reinforcing elements in the ducts.