hi all,
I'm trying to do my loft conversion with as little steel as possible so the SE has spec'd two c24 10x3's bolted together.
The calcs are attached but I think he's missed / not considered that the original purlins are staying in ?
So 2 X 10x3's seems huge for a 4m span ?
Any thoughts ?
I'm trying to do my loft conversion with as little steel as possible so the SE has spec'd two c24 10x3's bolted together.
The calcs are attached but I think he's missed / not considered that the original purlins are staying in ?
So 2 X 10x3's seems huge for a 4m span ?
Any thoughts ?