Calculation of the paint area of ​​\u200b\u200bpipes in m2 by formulas and calculator

Almost every house or apartment uses water or sewer lines. When renovating the premises, it is necessary to renew their anti-corrosion coating. For this, special compositions are used, which are selected depending on the material from which the product is made. To find out how much you need to buy, you need to know the calculation of the pipe area.

How to correctly calculate the paint area according to the calculation formulas

To determine the consumption of paint materials, it is not enough to know the length and diameter of the pipe. To do this, you must take into account the form:

• cylindrical;
• profile;
• conical;
• corrugated.

In addition, it is taken into account whether the pipes are made of metal, reinforced concrete or plastic. In order to accurately calculate the required amount of paint, you need to consider the area calculation for different types separately.

Cylindrical

To calculate the paint consumption of a cylindrical pipe, the following parameters are determined:

• length, L;
• outside diameter, d.

For the calculation you need the number . Since school, many know that it is equal to 3.14. Based on this data, the following are calculated:

S=*D*L.

Once the formula is known, it becomes easier to calculate the quantity of materials to be treated.

Concrete products

To calculate the area (S) of the sewer line, use the formula above. Such reinforced concrete products are often found in apartments. The measurement of their parameters is difficult. To do this, using a flexible tape measure, determine the circumference L_oh... The length is taken from the value of the height from the ground H_eh... Then S will be equal to:

S=L_oh*H_eh

If the diameter is known, then S can be equal to:

70cm - 1.99m²;

1m - 2.83m²;

2m - 5.65m².

Profile

Profile tubes have a rectangular cross section. Sometimes all the corners are rounded, and sometimes they are not. To calculate the area in the first case, it is better to use the method given for the RC pipeline. But, if there is no tape measure available, you can use the following expression:

S=2*L*(W₁+W₂)

The formula contains two profile widths (W₁ and W₂) and its length (L).

Conical

Just calculate the area of ​​the conical tube. These are the gaps in the pipeline that have a regular expansion from end to end. If you unfold the product, you get a trapeze. Based on the calculation of the S of an isosceles trapezium along the bases, this parameter can be obtained for a tapered pipe.

This will require outer rays from the start (R₁) and end (R₂) some products. Given the known length (L) S is calculated from the expression:

S = π * (R₁+R₂) * I

As you can see, this setting is very easy to find.

Corrugated

It takes more effort to find the area of ​​a corrugated pipe. The construction of this metal or plastic product is divided into three parts. There are two cylinders at the beginning and end of the pipe. Their S is calculated by the above expressions.

The corrugation itself consists of a large number of conical pipes or rings, slightly connected to each other, which allows them to compress, expand and bend. To calculate S, fully compress the corrugation and measure the inside (R₁) and external (R₂) radii at the bending points. Ring area (S_AT) will be equal to:

Sк = π * (R₂²-R₁²)

Now this value must be multiplied by the number of sections (N_With). As a result, the formula for the corrugated part is:

S=S_AT* NOT_With.

If there is a radius fillet (R₃), then their area (S_vs) is calculated:

S_With= 2 * π²*R₂* (R₂-2R₃)

Summarizing all these S_m, you can get the whole surface of the corrugation.

How to calculate paint consumption

When the surface to be painted is known, it is not difficult to determine the painting capacity of the required quantity. There are several types of coloring compositions that differ in their composition and consumption:

• alkyd, solvent, oil;
• acrylic.

The first are characterized by a flow rate of about 300-400 ml/m²... For the second - 100-200 ml / m²... Based on these data, it is very easy to purchase the required amount of paint.