I am embarking on installing a steel beam to support a load bearing wall. I design bridges so have done the necessary beam calculations, I have a few queries about the building side of it though. Any help gratefully received as I will be installing the beam myself (with help from friends of course)! And yes building control is being consulted before you ask.
The beam (UB 178x102x19, 3m span) is to replace an internal wall which supports the joists and stud work for the rooms above. I believe it is a breeze block wall. The beam is to span between an internal wall and the outside cavity wall and it will sit inside the ceiling with the joists fixed to each side of the beam using joist hangers on timber runners set into the web.
My questions are these (plan attached for reference):
1) The minimum bearing length is 100mm, is it wise to support the beam on the breeze block inner leaf of the cavity or leave 100mm at the end of the wall which is removed to add support to the beam. I will be partly fixing the beam into the inner leaf to give lateral support, however this does not need to be the full leaf.
2) On the internal (other) end, the beam will be at the end of a supporting wall. Is it wise to have the beam at the end of this wall or should I remove part of the adjacent stud wall and extend the wall by a brick length to give a better bearing/support.
3) With 1.1 N/mm2 bearing stress is it wise to install a spreader plate or remove a breeze block and install some engineering bricks to support the beam?
Sorry to ask so much, but want to get the plans as accurate as possible before the building control officer slates them!
Thanks
View media item 20917
The beam (UB 178x102x19, 3m span) is to replace an internal wall which supports the joists and stud work for the rooms above. I believe it is a breeze block wall. The beam is to span between an internal wall and the outside cavity wall and it will sit inside the ceiling with the joists fixed to each side of the beam using joist hangers on timber runners set into the web.
My questions are these (plan attached for reference):
1) The minimum bearing length is 100mm, is it wise to support the beam on the breeze block inner leaf of the cavity or leave 100mm at the end of the wall which is removed to add support to the beam. I will be partly fixing the beam into the inner leaf to give lateral support, however this does not need to be the full leaf.
2) On the internal (other) end, the beam will be at the end of a supporting wall. Is it wise to have the beam at the end of this wall or should I remove part of the adjacent stud wall and extend the wall by a brick length to give a better bearing/support.
3) With 1.1 N/mm2 bearing stress is it wise to install a spreader plate or remove a breeze block and install some engineering bricks to support the beam?
Sorry to ask so much, but want to get the plans as accurate as possible before the building control officer slates them!
Thanks
View media item 20917