How do you attach a post off-center?
Can you attach a wide 145x45 piece and then secure the post to one side, or will it crack if someone falls against the railing?
Are there better ways?
See attached image
Background:
I'm building a balcony railing on a balcony that's covered with sheet metal.
I don't want to screw through the metal, but I need a railing. The balcony is about 345cm wide and approximately 147cm deep.
I was thinking of attaching a 70x70 pressure-treated beam to the wall and then running a crossbeam/board to the other railing posts.
Now I have a problem because there isn't a beam in the wall at the farthest point; it's about 7-10 cm from where I want the post.
I guess it won't be securely attached if I only attach it to the siding boards; I need to screw it into a beam to prevent the railing from giving way.