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Extension Roof. Steel hip beams and steel ridge beam or Timber ring beam?

Discussion in 'Building' started by Minatoar, 27 Oct 2016.

  1. Minatoar

    Minatoar

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    My architect drew plans for my extension and proposed that the roof be constructed using steel hip beams and steel ridge beam, (see dotted line on drawing) and that I would need a structeral enginneer to specify the steels. I contacted an on line SE firm regarding this and he came back with a proposal to use a timber ring beam and rafters being the hip and ridge non-structural beams (timber boards). He said that this would be cheaper and more rational.
    Please can anyone advise the merits of either method?
    Many thanks.
     
    Last edited: 27 Oct 2016
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  3. Minatoar

    Minatoar

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    How do I attached a picture to this post?
     
  4. garyo

    garyo

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  5. garyo

    garyo

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  6. Minatoar

    Minatoar

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    Thank you for help in uploading pictures.
    The roof pitch is circa 30 degrees with interlocking concrete roof tiles.
     
  7. John D v2.0

    John D v2.0

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    Sounds like you have a good SE as he has input into the design. If you can avoid steel you should as it's heavy to install and expensive to buy and has to be custom made so can't be altered on site
     
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  9. ^woody^

    ^woody^

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    I propose you get a better plan drawer who can draw something that's clear.

    Where's the head, where's the tail?

    Yeah, the ring beam is much more logical
     
    Last edited: 27 Oct 2016
  10. Minatoar

    Minatoar

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    Thank you for the advice. I'm sorry that I didn't include any more detail than the crop attached.
    End elevation now included: Perhaps this will help?
     
  11. Minatoar

    Minatoar

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    Both views
     
  12. Minatoar

    Minatoar

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    End elevation
     

    Attached Files:

  13. dom_k

    dom_k

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    The ring beam may work in timber but would be quite chunky to span 4m whilst minimising deflection. What size is proposed. Hopefully not 50x100...
     
  14. Minatoar

    Minatoar

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    The ring beam is to be constructed by bolting 4 200x50 timbers run in parallel tied together along the deepest side (square section) they will be bolted together at 500mm centres using M12 bolts. This will effectivly result in a 200x200 mm beam.
     
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