Improvement of construction stage efficiency using computer simulation for water drainage system

Abstract

The present research aims to improve the efficiency of road drainage system construction. The research consists of onsite data collection from a housing estate with a total area of 174 rai in Ubonratchathani and computer modelling simulation. The onsite data comprises two main parts, which are 1) manhole production and 2) drainage system construction. Computer models are then generated and calibrated using a simulation program with the onsite data. After calibration, the computer models are then used to simulate and analyze various drainage system construction situations to improve the construction's efficiency eventually. It should be noted that the computer modelling is based on the assumption that increment of human resources and construction equipment is not applied. With the mentioned assumption, the computer simulation demonstrates the method to improve construction efficiencies, such as higher productivity with the same construction resource or less construction resource usage in the entire construction process. It was found from the computer simulation that, in producing 140 manholes, 10% of the working period, from 40 days to 36 days, can be reduced. In drainage system construction, the working period can be reduced from 105 days to 97 days, or 7.62% of working day reduction can be obtained.