Prefabricated external drop

Реферат: A prefabricated external drop operatively associated with a manhole and with a sewage pipe (6), the sewage pipe being located at a first level (H) and conveying an incoming flow of sewage, the external drop comprising: a collector comprising: an upper 90!-bend (13) with a first end forming a bend intake (15) configured for coupling to the sewage pipe and a second end forming a bend outlet (16) oriented vertically downward, and a control element (14) having a first lower end coupled between the bend intake and the bend outlet of the upper 90!-bend, the control element bifurcating radially outwards of the upper 90!-bend to terminate in a second higher end (H+) formed as a horizontal straight pipe coplanar with the upper 90!-bend and situated above the first level, the bend intake and the second higher end facing opposite directions, the latter being fixedly but releasably coupled to the manhole, and a discharge pipe (23) comprising: a vertical portion having a first higher end and a second lower end defining a length, the first higher end being coupled to the vertically downward-oriented bend outlet of the collector, and a horizontal portion having a first end and a second end, the second end being fixedly but releasably coupled to the manhole, and a lower 90!-bend coupling between the lower end of the vertical portion and the first end of the horizontal portion of the discharge pipe, whereby sewage from the sewage pipe flows through the collector and through the discharge pipe to the manhole. 1100 י" ב בסיון התשס" ד - June 1, 2004