RonnyRaygun's latest activity

  • RonnyRaygun
    RonnyRaygun reacted to johnny2007's post in the thread Neighbour's roof joining ours with Like Like.
    Not a roofer, but when joining 2 different tiles I have always seen a fibreglass channel with double ridges on both sides installed...
  • RonnyRaygun
    RonnyRaygun reacted to HERTS P&D's post in the thread Neighbour's roof joining ours with Like Like.
    Should look like this...
  • RonnyRaygun
    Thermalite have scratch marks and Celcon have a coloured band on the ends. There are others too such as Durox and Y-tong.
  • RonnyRaygun
    See Woody's post above - there is more risk of cracking due to the thermal effects. However, it's a cosmetic issue, not a structural...
  • RonnyRaygun
    I don't live at the same property any more, but when I left in 2016 it was still fine. In the end I also used EML fixed to the blocks to...
  • RonnyRaygun
    RonnyRaygun reacted to George_engineer's post in the thread steel beam bowing with Like Like.
    I'm not really arguing - I agree it hasn't got restraint. I was making the point that in principle, roof and floors can provide lateral...
  • RonnyRaygun
    RonnyRaygun replied to the thread steel beam bowing.
    Yes, but that assumes joists built in and from both sides of the beam. In this case the joists are only from one side and likely to be...
  • RonnyRaygun
    RonnyRaygun reacted to jks7492's post in the thread steel beam bowing with Like Like.
    Rubbish in, rubbish out! No point using software if you don’t understand any of the principles behind it…
  • RonnyRaygun
    RonnyRaygun replied to the thread steel beam bowing.
    As I suspected... He's taken full lateral restraint and taken live load deflection only Put him back on photocopying duties until...
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  • RonnyRaygun
    RonnyRaygun reacted to tony1851's post in the thread steel beam bowing with Like Like.
    Yes, for that beam, the ratio Le/ry is about 360 (even if we take the effective length as only the actual length instead of x1.2) which...
  • RonnyRaygun
    RonnyRaygun reacted to tony1851's post in the thread steel beam bowing with Thanks Thanks.
    A 254 x 102 x 22 on that span is absolutely bonkers - first class fail/bottom of the class. The twist downwards on the plate is due to...
  • RonnyRaygun
    RonnyRaygun replied to the thread steel beam bowing.
    Buckling occurs because of compression in the top flange, not because of lateral loads. When the top flange reaches its compressive...
  • RonnyRaygun
    RonnyRaygun replied to the thread steel beam bowing.
    You mean for a 254x102x22 UB? I took half of a 3.5m span (guess) at 0.80kN/m2 Dead and 0.75 Live (for the roof), and 0.9m of cavity...
  • RonnyRaygun
    RonnyRaygun replied to the thread steel beam bowing.
    No, three reasons (off the top of my head). 1: It's risky to use joists to prevent buckling as it relies on them being cut perfectly...
  • RonnyRaygun
    RonnyRaygun replied to the thread steel beam bowing.
    Never ever use a 254x102 UB as a lintel above a doorway. They are useless unless restrained as they are too slender and will buckle long...
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