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

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## 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

## How to Calculate Structural Efficiency?

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

**Example Problem #1:**

- First, determine the maximum design load. In this example, the maximum design load is given as 500.
- Next, determine the weight of the structure. For this problem, the weight of the structure is given as 300.
- 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