| 摘要 |
<p>A load bearing floor or roof member (Figure 1) is in the form of a flat plank member (1). It has flat major upper and lower walls (2A, 2B) and flat minor side walls (4A, 4B). It is a rigid, hollow, integral structure of fibre reinforced plastics material, with a rigid plastics foam filling (5). In each minor side wall (4A, 4B) is an integral undercut channel (8) which is shaped to receive slidably a connector portion of a connector member (9), which connector portion is of head and neck shaped cross section.</p> |
