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How to Calculate Stress in a Cantilevered Beam

The stress of a cantilevered beam is measured in pounds per square inch or psi. The stress of this type of beam can be calculated using a mathematical equation. However, to solve this equation you require variables that are obtained from measuring the cantilevered beam. Once known, you can then apply the variables to the equation to calculate the stress on the cantilevered beam.

Instructions

- 1
  Write out the equation that you will need to solve on a piece of paper: 6PL/bh^2.
- 2
  Measure the height of the beam with the tape measure. Make a note on a piece of paper and then label the measurement "H." An example height is 1-inch.
- 3
  Measure the length of the beam. Note the measurement and then label it "L." An example length is 40 inches.
- 4
  Measure the width of the beam. This is also known as its base. Note the measurement and then label it "B." An example width is 4 inches.
- 5
  Make a note of the weight load being applied to the beam and label it as "P." An example weight to use is 100 pounds.
- 6
  Input the variables of the beam into the equation. This will look like 6(100)(40)/4(1^2) with a result of 6,000 psi.

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