| 摘要 |
An elongate thermally insulated structural member for use in buildings, especially intended for use as rafters and studs in roof and wall structures, comprises an elongate core e.g. 10 of heat insulating material and at least two covering sheets, e.g., 11, 12 disposed to cover at least a portion of two opposing surfaces of the core. The covering shots are retained on the core by means extending between the covering sheets. The retaining means consist preferably of straps 13 or wire loops tightened externally around the member, but may comprise one or more sheets of plastics material, e.g. The core may comprise mineral wool or rigid foamed plastics, and a central stiffening web (18), Fig. 2 (not shown), or a pair of edge stiffening webs (23), Fig. 3 (not shown) may extend between the covering sheets, which are preferably metal. The edge stiffening members, which box in the core, may be of wood-based material. <IMAGE> |
