| 摘要 |
<p>The constructional component comprises a frame, window-frame etc. of hollow profiled sections, used e.g. for prefabricated bungalows. The sections are of T - or cruciform shape, and in cross-section have a square core containing no material, from which there extend three or four hollow protrusions (1) of roughly square cross-section, in line with or at right angles to each other. At corners, they can be joined together by removal of the central part of one of them for the full width of a protrusion, and for a length equal to the height of the protrusion of the other section over which the first one fits.</p> |
