• Quieter Construction Methods
    Quieter Construction Methods

Some advanced quieter construction methods have been established. Performance and practicability of the equipment has been studied and approved on different construction sites in Hong Kong.


Cured-In-Place-Pipe (CIPP) Lining with Enhanced Curing Technology


Conventional pipe repairing and replacement may need to open the road surface. Cured-In-Place-Pipe (CIPP) Lining with Enhanced Curing Technology is considered to be one of the quieter construction methods, compared to the conventional "open, cut and replace" method. Firstly, deflated soft liner fabric material is pulled into the host pipe by a winch. Then, the liner is inflated by compressed air such that it can stay tight-fit with the host pipe. Finally, ultra-violet (UV) light is used for curing the liner. Compared to traditional CIPP, this method eliminates the use of a steam boiler to further minimize the noise impact.