Results 1 to 4 of 4
  1. #1
    Jerome W. Young's Avatar
    Jerome W. Young Guest

    Default 1/2 in roof decking under concrete flat tile

    no clips were used , joists are 24 O.C. and 32/16 thickness. I thought it had to be 5/8 for tile roofs?

    Similar Threads:
    ***IMPORTANT*** You Need To Register To View Images ***IMPORTANT*** You Need To Register To View Images
    Member Benefits1

  2. #2
    Join Date
    Mar 2008
    Location
    Charlotte NC
    Posts
    2,303

    Default Re: 1/2 in roof decking under concrete flat tile

    The 32/16 is not the thickness of the plywood sheathing, it is the span allowed. 32" roofing and 16" flooring.


  3. #3
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    26,243

    Default Re: 1/2 in roof decking under concrete flat tile

    There would have been another label giving its thickness, such as 15/32" (1/2"), 19/32" (5/8").

    Based on the span rating of 32/16, that would be 15/32" (1/2") plywood (taken from Table R503.2.1.1(1).

    Typically, you will find plywood with a span rating of 40/20, which would be 19/32" (5/8").

    In the HVHZ (Miami-Dade and Broward counties) the minimum if 5/8" for roof sheathing.

    The Florida Manual for installing roof tiles shows (under System II) "DIVISION 7 These guidelines cover Flat/Low, Medium and High Profile Roof Tile, using a minimum 3 tile headlap, or a designed limited headlap, on minimum 15/32 solid decking nailed in compliance with wind load requirements.", on page 24.

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  4. #4
    Jerome W. Young's Avatar
    Jerome W. Young Guest

    Default Re: 1/2 in roof decking under concrete flat tile

    yup, my bad on that one. It WAS HOT AS HELL IN THERE! I saw 32/16 and thought 15/32 or 1/2 . Either way it appears that it is ok.


Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •