> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ntop.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Optional: Data Driven Design Test Problem

Using the starter file below, use the imported stress data to shell and lattice infill the bracket, reinforcing the areas with the greater stresses.

Use a BCC unit cell with an 8x8x8mm cell size, and transition the beam thickness between 1mm and 4mm.

<Frame>
  <img src="https://files.learn.ntop.com/lessons/optional-data-driven-design-test-problem/320_12_1-1024x534.jpg" />
</Frame>

**Estimated Time to Complete:** 20 minutes

**Example File:**

[320\_12\_1.ntop](https://files.learn.ntop.com/Courses/320%20Data%20Driven%20Design/nTop%20Files/320_12_1.ntop)

*This file was last updated in nTop 5.14.3*