Knocking through a load bearing wall...RSJ size???

14 Jun 2011
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United Kingdom
bit of a challenge this ... I want to knock through a load bearing ground floor internal brick wall (supporting one further floor) - span of 320cm, ending on a course of blockwork at each end?

What elements are needed to calculate the RSJ size / spec to adequately cover the vertical and lateral loads? Same for the padstones?

Any clues on how to go about calculating this? Someone said to look at the size of the current joists and calculate from that but I'm unsure how to do that?

Thanks in advance...
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The only advice I would offer is to consult a structural engineer as it'll be their calculations/details the Building Control department would want to see.

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