Design of Storm Water Drainage System: A study in Lae City, Papua New Guinea

Abstract

A drain is the drainage system component that collects runoff from inlets and transfers the runoff to a point where it is then drained into a stream, water source, or piped system. It is very significant that all roads must have a proper storm drainage design to avoid further problems such as, poor highway traffic due to flood on the main road, potholes causing accidents, and erosion on the road sub-grades.

This research focuses on designing the storm water drainage system of Independence Drive in Lae City. Its purpose is to provide a complete summary of the existing drainage situation and facilitate the best alternative drainage design, including suitable ways to improve the current conditions of the road in terms of its drainage network. In order to design a better drainage network for the road, it is important to take into consideration, the users’ point of view with regards to the problem, the availability and reliability of geographical data, and the data analysis tools. Therefore, the research engaged a survey to obtain information about the state of the Independence Drive drainage system and the effect of poor drainage on road users, including the surrounding environment. Based on the survey findings, the research focuses on providing solutions to the drainage problem encountered along the Independence Drive using both survey and GIS data, processing of the data using spatial survey and geographical information tool and providing the appropriate drainage design output.