I'm building a reasonably large extension for someone at the moment and wondered if someone could offer an opinion.
We have a door (900) situated next to a window (1800) so the structural opening is naturally (2700) with a panel of block/brickwork coming up under the window.
The Engineer forgot to specify anything for this opening and naturally I thought that 2.7m was OK for a heavy duty catnic type lintel. However, thought i'd check with him, and true to form he's gone steel crazy and said we have to use UB's and install a wind post on the end of the blockwork nib up under the steel.
I'm only a builder but thought this all seemed way over the top.
The loading above (apologise for the lack of technicality), is 2 skins of thermalite blockwork, with a slate hanging tile detail to the external elevation. A traditional cut roof on top.
If you need any more info let me know.
Thoughts appreciated.
We have a door (900) situated next to a window (1800) so the structural opening is naturally (2700) with a panel of block/brickwork coming up under the window.
The Engineer forgot to specify anything for this opening and naturally I thought that 2.7m was OK for a heavy duty catnic type lintel. However, thought i'd check with him, and true to form he's gone steel crazy and said we have to use UB's and install a wind post on the end of the blockwork nib up under the steel.
I'm only a builder but thought this all seemed way over the top.
The loading above (apologise for the lack of technicality), is 2 skins of thermalite blockwork, with a slate hanging tile detail to the external elevation. A traditional cut roof on top.
If you need any more info let me know.
Thoughts appreciated.