An important step in building deck step railing is to stiffen ... The usual technique is to bolt it to the stair stringers ...

If you're renovating a two-story structure, you might be tempted to build your own stairs. Jenna and Nick have done it, too. Here's what they learned.

Building a new wall to support the new stairs. Calculating the rise and run for the new staircase to ensure proper dimensions. Cutting and fitting new stair components, including stringers and treads.