The goal of cathodic protection is to prevent corrosion by maintaining buried pipelines at a constant potential with respect to the surrounding soil. In practice, however, the implementation is very complicated since many factors can contribute to the current flowing off the pipe. Design requires characterization of the parameters impacting the corrosion process, such as soil resistivity, size ...

Flooding in urban areas is an inevitable problem for many cities in Asia. In Bangladesh, Dhaka has serious problems related to urban flooding. The situation was highlighted in September 1996 when residences experienced ankle to kneedeep water on the streets. Daily activities in parts of the city were nearly paralyzed and heavy traffic jams occurred due to stagnant water on the streets. The stud...

A numerical simulation on the heat transport augmentation and flow drag behavior of spirally corrugated pipes was performed. The conducted basis experimental results documented in published literature. influence thread height pitch hydraulic–thermal performance as well mechanism convection development inside pipe were explored. It discovered that elevates Reynolds number region 4000~13,000 rise...

due to the important role of subsurface drainage in managing the ground water level, there are many researches focused on finding a new and more economic way to develop subsurface drainage technologies. lack of proper drainage system in northern iran has caused huge implantation of rice and it is impossible to have second implantation in this region. one reason of insufficiency of current drain...

This paper presents our efforts in the updating of the Storm Water (SW) Database using Global Positioning System (GPS), direct survey and measurements of the Storm Water structures (or called Manhole) in GIS database management. The main task assignments include (1) Designing a data structure, which becomes an effective geodatabase structure to represent the storm water structures and the corre...

Abstract This paper presents the results of a comprehensive assessment manufacture pipes with corrugated inner surface. It examines technological force, stressed and deformed states, probability defects during corrugation pipe at different depths help rotating working mandrel plastic deformation caused by it. The analysis was performed using special QForm software. study provides graphs distrib...

The current OPSS and OPSD that provide specifications for drainage pipes in Ontario, are shown to be a simplified and more conservative version of the traditional Marston-Spangler method. The SIDD method was developed through extensive finite element analyses. It improves the pipe installation practice by lessening the requirements in bedding and compaction, and allowing the use of native backf...

The use of Sustainable Drainage Systems (SuDS) or Best Management Practice (BMP) is becoming increasingly common. However, rather than adopting the preferred “treatment train” implementation, many developments opt for end of pipe control ponds. This paper discusses the use of SuDS in series to form treatment trains and compares their potential performance and effectiveness with end of pipe solu...