| 摘要 |
<p>The proposed sewerage construction in the form of gully shaft, inspection manhole consists particularly of one or several concrete hollow parts (2; 15, 15'; 35, 36, 37) with at least one connection for sewer pipe (7; 17; 25, 27; 39; 39'). The sewerage construction (1) according to the present invention is provided on its inner side (8; 8'; 29) with a bearing profiled region (9) for supporting a testing sealing body (10) in fluid-tight testing position.</p> |
