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3 Types Of Stormwater Drainage Systems

plumber stives - stormwater drain

What is a Stormwater Drain?

Is a drainage system that is designed to drain ground water and excess rain from street pavements, foot paths, side walks, roofs and car parks. It has different sizes, depending on its function, if it’s from a house stormwater drain system to large main public drain systems. Mostly fed from the street gutters in motorways, busy roads and freeways. In some cases, or in some areas, where moderate storm to heavy storms are frequent, stormwater drains are left untreated and has a moving path directly to rivers or even to the beaches which can be bad for the environment.

The primary functions of the stormwater gives so much importance to human lives and a big impact to environmental safety. Protecting our natural water sources from pollutants such as harmful chemicals from fertilisers or pesticides and animal wastes. Thus, a well conducted drainage system including a storm water drain, gives us all the good benefits in living a healthy environment.

Here are the 3 common types of Stormwater Drainage system:

  1. Inlet – Grated and Side inlets. Grated inlets are designed with grate bars to avoid small objects to enter the drain system. However, if the bars are too far, it can cause accidents such as tires getting stuck, pedestrians falling and even worse, vehicular accidents. That’s why the grated inlet bars are designed carefully to avoid any misfortunes. Materials used as well are also designed to support enough wait for passing vehicles. Side inlets on the other hand are located adjacent to the curb and rely the ability of the opening under to capture flow. It is usually depressed at the invert of the channel to improve water capture capacity.
  1. Outlet – Common drains has large exits for discharge and is often covered with grated bars. The exit normally goes to a reservoir, canal, lake, river or straight to the open sea. Small stormwater drains does its discharges into dry wells. Some systems are interconnected to slotted pipes, for larger dry well systems. Others are discharged to man-made excavations known as recharge basins.
  1. Piping – It has different types of shapes depending its usage. It can be in a cross-sectional shapes like oval, square, pear-shaped, rectangular, circular or egg-shaped. It also has different types of features including stairways, waterfalls, balconies and pits for catching rubbish pollutants. Different materials are also used in Pipes. It can be concrete, brick, galvanised steel or high-density polyethylene. New products now use fibre reinforced plastic for drain fittings.

Stormwater drains can cause huge hazardous public pollution if too much dumping of solid wastes and liquids are being dumped. It can lead to mosquito breeding, hazardous chemical reactions, clogging that will lead to flooding and more. This can bring harm not just to us human beings, but also to where the drainage system is heading to in the ocean, where the fishes and other creatures live are in danger. So we must always remember to be careful in what we put in our drains, because when it rains, it drains everything including  waste pollutants as well.