Enter the maximum design load and the weight of the structure into the calculator to determine the Structural Efficiency. 

Structural Efficiency Formula

The following formula is used to calculate the Structural Efficiency. 

Est = DL / W
  • Where Est is the Structural Efficiency
  • DL is the maximum design load 
  • W is the weight of the structure 

To calculate the structural efficiency, divide the maximum design load by the weight of the structure.

How to Calculate Structural Efficiency?

The following two example problems outline how to calculate the Structural Efficiency.

Example Problem #1:

  1. First, determine the maximum design load. In this example, the maximum design load is given as 500.
  2. Next, determine the weight of the structure. For this problem, the weight of the structure is given as 300.
  3. Finally, calculate the Structural Efficiency using the equation above: 

Est = DL / W

Inserting the values from above and solving the equation: 

Est = 500 / 300 = 1.666

Example Problem #2: 

Using the same process as above, first define the variables required by the formula. In this case, these values are:

maximum design load = 35

weight of the structure = 60

Entering these values yields:

Est = 35 / 60 = .5833