To calculate pipe volume, measure its length and also internal and external radiuses. Determine the areas of cross sections by external and internal radius, calculate volumes. It will be the internal and external volume of a pipe. After that calculate the volume of material of which the pipe, is made simple subtraction. If material of which the pipe is made is known and it can be weighed, calculate its volume through density.
It is required to you
- roulette, caliper, table of density of some substances, scales.
Instruction
1. Scoping of a pipe geometrical metodoms measure by the help of a roulette or any other way pipe length, including all its bends. Then find a caliper or other suitable device the external and internal diameter of a pipe and calculate radiuses, having divided each diameter into 2. Some pipes are marked in inches. To transfer this value to meters, increase inches by 0.0254. Most often in inches internal diameter is specified. Calculate the full volume of a pipe on external radius. For this purpose increase number 3.14 by a square of the external radius measured in meters and length of pipe V=3.14•R²measured in meters \• l. Receive volume in cubic meters.
2. Calculate the internal volume of a pipe. Do it in the same way, as well as for external volume, only when calculating use value of internal radius of pipe V=3.14 • r²\• l. It is so possible to determine the volume of substance which can be in a pipe. It can be water, oil, gas, etc. To find the volume of material of which the pipe is made from external volume take away internal. Not to make excess calculations in case it is not necessary to count external and internal volumes, find pipe body volume at once. For this purpose square a difference of external and internal radiuses, increase by number 3.14 and length of pipe V=3.14 • R-r²\• l.
3. Scoping of a body of a pipe through a plotnostyuznayta from the special table density of material of which the pipe (steel, cast iron, plastic, glass, etc.) in kg/m³ is made. Then weigh a pipe on scales, having expressed its weight in kilograms. To receive pipe body volume, divide its weight into V=m/ρ density. Receive result in cubic meters. In all cases when it is necessary to transfer cubic meters to cubic centimeters, multiply the received result by 1000000.