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Farm Machinery
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<blockquote data-quote="Mur Huwcun" data-source="post: 7270588" data-attributes="member: 33114"><p>It's the way portal frames are usually built as the haunches are there to stop the rafters twisting. I have also just in case welded 40x10 flat bar into the web of the stanchions where the rafter and haunch is to stop the column twisting with roof loadings. I've also seen buildings done with the rafter on top but still using a haunch and have seen them just welded on top but I wanted a belt and braces job as I was doing it myself rather than buying a kit therefore did it once and hopefully did it right!!! The price difference per meter between 7x4 and 8x4 UBs were only a few pounds.</p></blockquote><p></p>
[QUOTE="Mur Huwcun, post: 7270588, member: 33114"] It's the way portal frames are usually built as the haunches are there to stop the rafters twisting. I have also just in case welded 40x10 flat bar into the web of the stanchions where the rafter and haunch is to stop the column twisting with roof loadings. I've also seen buildings done with the rafter on top but still using a haunch and have seen them just welded on top but I wanted a belt and braces job as I was doing it myself rather than buying a kit therefore did it once and hopefully did it right!!! The price difference per meter between 7x4 and 8x4 UBs were only a few pounds. [/QUOTE]
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