Build Daily


August 12, 2017 18:07

The diameter of the sewer pipe for the toilet , sink , tub , sink.

sewer pipe diameter measurement

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Recently, the diameter of plumbing pipes began to measure, in the familiar to any person, the metric system - millimeters.Prior to this, the calculation occurred in inches.Although, there are also disadvantages in this passage, namely, the number of ¾ remember and say a lot easier than a hundredth of a millimeter after the decimal point.

Each product of this type has two diameters - the outer (DH) and internal (DB), and the difference between them - a wall thickness of the product.

wall thickness of the pipe and its diameter - basic geometrical figures pipe of any material, so these parameters are particularly important when designing a sewer system.The pipeline will be located closer to the drain collector, the greater will be its diameter.For example, if you look more globally, this figure could be set to 4m.pipe disposed at the inlet to the central sumps large cities.As a rule, it is a reinforced concrete pipe, which copes with both sewage and stormwater runoff.

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Calculations of pipeline options for the sewer system should be carried out specialist without fail.Moreover, incorrect pipeline with a large size can lead to stagnant processes, and with a small - for jams and leaks.

Let's see what the diameter of the pipes for sewage fit in a particular case.

for standard toilets fit d = 100mm, and for sinks and bathroom, this parameter is twice less.The thing is that when flushed from the toilet enters the bulk density of water, with the possible presence of solid elements.If the above value is reduced when the first flushing likely blockage.The bathroom sink is small, even with a partition installed, so put the pipe with a large size is inappropriate.


Standard diameter sewer pipes.How to choose the optimal size

for design of sewer networks using plastic pipes whose diameter varies from 40 to 300mm.

There are specific regulations, which are tables with the description of the parameters of the pipe.Relying on these values, you will be able to install the water supply of any complexity and configuration.

In the calculations must take into account: the wall thickness, DB and DH, the material from which made the product and its length.

minimum length of sewer pipes is 1 m.Pipeline released with this step up to six meters.

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summarize, consider the basic diameters of pipes for sewerage:

  • sewage pipe 75 mm (maximum value) suitable for baths, sinks and urinals;
  • pipeline with d = 100 mm is used for horizontal drainage water;
  • pipeline with d = 200 mm is used as a riser;
  • pipeline with d = 300mm or more used for a domestic sewage supplied to the collector.

To better understand all these figures, consider an example.Let the room, two toilets installed.If you follow the logic, according to which in the last chain sewer pipe should be large diameter, it seems logical to establish for a second toilet pipe with d = 200mm.However, this is a misconception.Bandwidth sewer pipe with size is 4 times stronger than that of the common drain.This will entail an incorrect fluid dynamics and the possible occurrence of vibrations.

Consider further that the inner diameter of cast iron pipes is much less than that of plastic with the same DH., The calculation is also necessary to consider.

pipeline with a size of 200mm is perfect for horizontal sewer plank uniting several apartments.When the number exceeds 5, you can use a pipeline with d = 300mm, but no more.

For non-standard sizes of connecting pipelines using special fittings and various mounting accessories, which are in every hardware store.

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