I want to make a half wall beside a staircase (on the edge of the upper floor). One end will be attached to a concrete column, but the other will be (so far) unsuported. Something like the picture below:
What is the best way to ensure that It stays put and strong? If nothing else I will make a square tubing post (100x100mm, 1.5mm thick) from floor to ceiling and attach the drywall to it.
Any other ideas?
EDIT: No wood studs in Brazil, actually it is very hard to get good construction lumber around (most aren't dry, and pressure treated is rare and expensive as hell).
Best Answer
Residential steel studs aren't rigid on their own. They get rigidity from the surfaces they are connected to along with the drywall that is attached.
For a wall like that, I'd want to treat it like a newel post on the end and have it be a 4x4 blocked and bolted to the joist below it for rigidity.
Otherwise, your idea to just make it a full column would work too.