Developer Sun Hung Kai Properties installs DN400 (450 OD) PE100 RC gravity sewer pipe between existing chambers to provide a 100- year maintenance free connection.
Friday, December 1, 2017
The existing site collection chamber had a cast iron spigot. This had to be re connected to an existing sewer chamber at a lower level. A PE-DI transition fitting with a rubber ring seal and puddle flange was used to connect onto the cast iron spigot. This had a concrete corbel poured around it, anchoring it to the chamber and iron spigot.
The transition was fused to a length of Mill-Pro M90ES CCTV pipe and further connected to a 90º bend for the vertical drop and another 90º bend for a side entry into the existing sewer chamber using a Friatec ASF/AEM manhole connector. This connection provides a 100 year maintenance free design.
download the pdf here: