**Specify the inner diameters of the connected pipes**

**Calculation of the diameter of the distribution manifold** based on the rule that indicates that the cross-sectional area of the housing of the distribution collector must be at least the sum of the cross-sectional areas of the outlet pipelines, and that of the collecting collector - not less than the area of the supply pipelines.

It should be remembered that for collectors with a diameter of more than 500 mm, the use of flat overhead welding plugs is not allowed. In such cases, elliptical or flat plugs with welded stiffeners are used.

The distribution manifold should be installed with a slope of at least 0.002 in the direction of the drain fitting, and the connection point of the supply pipeline to the distribution manifold and the outlet pipeline from the collection manifold should be located near a stationary support. It should also be noted that it is not recommended to cut into the lower part of the manifold. Moreover, for collectors with a diameter exceeding 500 mm, flat overhead welding plugs should not be used. In such cases, elliptical or flat plugs with welded stiffeners should be used instead.

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Calculation of the diameter of the distribution manifold

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Normative heat losses from pipelines of the heat network

Calculation of heat losses from pipelines

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