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Calculated method of weight determination

This method is rarely used: mainly when the exact length of the pipeline is not yet known, and you want to determine the load on the supports and steel structures. The input data for calculating the weight of rolled round cross-section are:

Radius of the outer cross-section R, mm;

The radius of the inner section r, mm;

Length of calculated section l of copper pipeline, mm.

The dependence, according to which the calculations are made, is as follows:

m = 3.14 (^R2 - ^r2)lρ,

where ρ = 8960 ^kg/m3 - copper density at room temperature.

The calculation of weight of one meter of non-circular copper pipes is carried out similarly, only instead of area of ring section 3.14 (^R2 - ^r2) the area of hollow thin-walled rectangle 2t (B+H) is substituted, where t - thickness of pipe wall, H and B - length of longer and shorter pipe side respectively.

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Tabular method

Assuming that the dimensions of rolled copper pipe in accordance with the certificate data, the mass of one meter can be established by the experimental table, the most commonly used part of which is given below:

For diameters and thicknesses of copper tubes that are not listed in this table, the calculation can be made by interpolating intermediate data.

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