| 摘要 |
<p>The invention concerns a method of erecting a foundation structure for a building substructure. In accordance with this method joists (1, 1a) comprising a horizontal web (4) interconnectiong upright side flanges (2, 2a, 3, 3a) on either side, are positioned butt end against butt end and are fixed in position at a distance of a few centimeters above a substratum (7). Gravel, macadam (9, 9a) or other back fill material is then positioned against the external face of each side flange (2, 2a, 3, 3a), whereupon concrete (18) is poured into the joists (1, 1a) and is allowed to partly flow downwards, through apertures (6) formed in the joist webs (4), and onto the substratum (7).</p> |
