Who invented plumbing and sewerage? Detailed answer

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Who invented plumbing and sewerage? Detailed answer

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Who invented plumbing and sewerage?

There are two vital plumbing systems: plumbing and sewerage. A water supply system is a system of pipes and valves through which water enters a house from a main water supply system laid underground. Sewerage is also a pipe system, but through them, wastewater leaves the house and goes into sewer wells on the streets.

The first known systems of this kind arose about 4000 years ago. Archaeologists conducting excavations on the island of Crete in the Mediterranean Sea discovered a palace of that era, in which there was a plumbing and sewer system.

The water supply system consisted of channels through which water flowed. She gathered in these channels after the rains and snow melt. Water from the canals flowed into vertical wells, and from the wells into bathrooms and toilets. Wastewater was discharged through pipes made of terracotta - a type of baked clay. These pipes were made in such a way that they were easy to install: the narrowed end of one pipe was inserted into the socket of the next, and the joints were coated with cement.

The Romans were the first to use metal pipes. The pipes were made from lead. And the workers who installed these pipes, in our opinion - plumbers, the ancient Romans called "lead craftsmen." These days, lead is sometimes used in some specialty piping. Typically, pipes are made of steel, copper, brass, iron, concrete and plastics.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Is it possible to weigh a molecule?

The weight of a molecule is determined by scientists on a relative scale. It depends on the weight of the atoms of which it is composed. The weight of atoms, in turn, is determined by the number of elementary particles - protons and neutrons, located in the nucleus of an atom. The weight of each of these particles on the relative atomic scale is equal to one.

Let's take a water molecule consisting of two hydrogen atoms and one oxygen atom. Hydrogen is the simplest element, with only one proton in its nucleus, and therefore its atomic weight is one. An oxygen atom contains 8 protons and 8 neutrons in its nucleus. Therefore, its weight is 16 units on a relative scale.

To determine the weight of a water molecule, add the weights of all three atoms. Having done this operation, we will get 18 units in the answer on the relative atomic scale of weights.

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