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Hip and Valley Deductions for dihedral?

  • 12-08-2013 5:01pm
    #1
    Megatron!!
    Closed Accounts Posts: 94 ✭✭


    Ok Ive forgoton what im supposed to take away from the seat cut on a standard hip at 45 to the wallplates to allow battons to fit perfect. Am I right in saying you subtract half the thickness of the hip rafter from the seat cut so the battons hit the outter edge of hip?

    Also is there an easy way of working out the upstand on the valley rafter that is NOT at a 45, like more of a 60 angle. The valley has to drop so battons line up with the middle but how do I work it out?

    I need a reliable answer to this tonight please

    Thanks


Comments

  • #2
    saltandpepper10
    Closed Accounts Posts: 194 ✭✭saltandpepper10


    Megatron!! wrote: »
    Ok Ive forgoton what im supposed to take away from the seat cut on a standard hip at 45 to the wallplates to allow battons to fit perfect. Am I right in saying you subtract half the thickness of the hip rafter from the seat cut so the battons hit the outter edge of hip?

    Also is there an easy way of working out the upstand on the valley rafter that is NOT at a 45, like more of a 60 angle. The valley has to drop so battons line up with the middle but how do I work it out?

    I need a reliable answer to this tonight please

    Thanks
    these are quite complex questions you ask op best advise i can give you is aim to keep the upstand at the outer edge of the wallplate the same height,loads of methods for this but would take a better man than me to explain to you here in a few sentences


  • #3
    Megatron!!
    Closed Accounts Posts: 94 ✭✭Megatron!!


    saltandpepper10 wrote: »
    these are quite complex questions you ask op best advise i can give you is aim to keep the upstand at the outer edge of the wallplate the same height,loads of methods for this but would take a better man than me to explain to you here in a few sentences

    Its ok It all came rushing back to me today. Forgot totally but after doing it it went like clockwork. cheers


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