Thursday, April 16, 2009

RE: Plywood Shear wall

  • 2007 CBC (& likely 2006 IBC) Chapter 23 Tables list Structural 1 as conforming to PS 1-95 or PS 2-95
  • Sounds like a call to OSPHD may be a way to answer your question on their requirements 

    >>> Tom Skaggs <tom.skaggs@apawood.org> 04/16/2009 10:01 AM >>>
    I've had a busy morning, and see there are several responses that I'd like to correct.  Let me handle the original question.





    -----Original Message-----
    From: Tim Rudolph [mailto:timrudolph@att.net]
    Sent: Wednesday, April 15, 2009 19:54
    To: seaint@seaint.org
    Subject: Plywood Shear wall

    Hi,
    I have designed an addition to my local volunteer fire department
    building. It is an essential facility - I called for 5 ply Structural 1
    plywood for the shear walls and plywood for the roof diaphragm.  The
    contractor would like to substitute OSB for the plywood(OSB is
    cheaper).  In custom homes and commercial buildings it has not been a
    problem to allow the change.  But with the Essential Facility Structure
    is plywood what should be used over OSB?

    Or rephrased what would OSHPOD want- in a hospital building?

    I know about OSB and a slightly different /stiffer interaction at the
    wood nail interface

    Thanks,
    Tim Rudolph PE
    Bishop CA

    Hanging out in Digest mode

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