Custom Search
Results 1 to 16 of 16

Thread: 2009 IRC stair treads and risers

  1. #1
    Sawhorse skipharper's Avatar
    Join Date
    Dec 2009
    Location
    Louisa County, Va.
    Posts
    170
    Thanks
    0
    Thanked 3 Times in 2 Posts

    2009 IRC stair treads and risers

    In Virginia every time the new code is adopted we continue to ammend the stair rise and tread to read different from what is in the current IRC. (Less restrictive) Are any other States doing this to your knowledge?

  2. #2
    Sawhorse
    Join Date
    Nov 2009
    Location
    West of the river CT
    Posts
    2,961
    Thanks
    449
    Thanked 222 Times in 209 Posts
    I believe CT does also...
    Please support Jim Brown, Deputy Building Official from Gillette, Wyoming for ICC Board of Directors.
    My questions and answers are based on some bastardized hodge podge starting with the 2003 I-codes amended by the state of CT in 2005 and 2009 including the 2005 NEC ....and as of today.....The 2011 Connecticut Amendments to the 2009 International Energy Conservation Code portion of the 2005 State Building Code has been posted to the State Building Inspector’s website

  3. #3
    Sawhorse Inspector Gift's Avatar
    Join Date
    Oct 2009
    Location
    Oregon's "Gateway to Mt. Hood"
    Posts
    174
    Thanks
    179
    Thanked 20 Times in 15 Posts
    both Oregon and Montana have also amended the risers to allow 8" max and the tread treads to a minimum of 9".
    "Build it Well, whatever you do. Build it Strong, Straight, and True. Build it High; build it Broad. Build it for the eye of God."

    "If it's worth doing, it's worth doing right."

  4. #4
    Sawhorse mtlogcabin's Avatar
    Join Date
    Oct 2009
    Location
    Big Sky Country
    Posts
    4,734
    Thanks
    67
    Thanked 610 Times in 485 Posts
    Fo IRC buildings Montana is 8 1/4" riser. In our jurisdiction on new construction we usually see 11" treads but 9" is allowed.

  5. #5
    Sawhorse GBrackins's Avatar
    Join Date
    Nov 2009
    Location
    Fairhaven, Massachusetts
    Posts
    458
    Thanks
    116
    Thanked 50 Times in 38 Posts
    Massachusetts amended to allow 8-1/4" maximum riser, minimum 9" tread
    Gary

    "If you don't have time to do it right the first time, when will you find the time to fix it?"

  6. #6
    Sawhorse Francis Vineyard's Avatar
    Join Date
    Jan 2010
    Location
    Charlottesville, VA
    Posts
    1,732
    Thanks
    212
    Thanked 239 Times in 185 Posts
    Quote Originally Posted by GBrackins View Post
    Massachusetts amended to allow 8-1/4" maximum riser, minimum 9" tread

    Same as Virginia




    Francis
    ACCESS TO VIRGINIA CODES: 2009& 2012 Virginia Codes

  7. #7
    Administrator fatboy's Avatar
    Join Date
    Oct 2009
    Location
    Northern CO
    Posts
    4,153
    Thanks
    79
    Thanked 313 Times in 256 Posts
    No statewide adoption in CO, no local amendments. Don't know of anyone in CO that amends the section either.
    Arguing with an inspector is like wrestling with a pig in mud, pretty soon you realize that the pig is enjoying it!

    This response brought to you by one of the paying members of the Building Code Forum.
    You can join the paying members and support this forum, for a small donation at
    http://www.thebuildingcodeforum.com/forum/payments.php

  8. #8
    Bronze Member
    Join Date
    May 2011
    Location
    Elizabethtown, Ky
    Posts
    99
    Thanks
    7
    Thanked 11 Times in 8 Posts
    Kentucky is 8 1/4" rise 9" tread. Same as Mass and Virginia

  9. #9
    Administrator jar546's Avatar
    Join Date
    Oct 2009
    Location
    33446
    Posts
    4,731
    Blog Entries
    15
    Thanks
    169
    Thanked 299 Times in 178 Posts
    Items for Sale
    Pennsylvania for Residential ONLY

    8-1/4" Rise, 9" Tread
    Admin

  10. #10
    Sawhorse TJacobs's Avatar
    Join Date
    Oct 2009
    Location
    Peoples Republic of Illinois
    Posts
    1,310
    Thanks
    81
    Thanked 43 Times in 37 Posts
    Our jurisdiction does not enact amendments that weaken the codes.
    Jake

    This response brought to you by one of the paying members of the Building Code Forum.
    You can join the paying members and support this forum, for a small donation at
    http://www.thebuildingcodeforum.com/forum/payments.php

  11. #11
    Silver Member
    Join Date
    Oct 2009
    Location
    Metro Atlanta
    Posts
    277
    Thanks
    2
    Thanked 13 Times in 9 Posts
    Georgia allows the 1st and last riser to vary from the other risers by as much as 3/4" and allows a 9" tread depth.

    GPE

  12. #12
    Sawhorse skipharper's Avatar
    Join Date
    Dec 2009
    Location
    Louisa County, Va.
    Posts
    170
    Thanks
    0
    Thanked 3 Times in 2 Posts
    I like TJacobs thoughts but maybe it really is true what some builders tell me--you can't build a cape cod with IRC compliant stairs--LMAO

  13. #13
    Sawhorse Sifu's Avatar
    Join Date
    Sep 2011
    Posts
    592
    Thanks
    27
    Thanked 30 Times in 26 Posts
    As of the time I left NC, they also have a different requirement. 8 1/4" riser, 9" tread, 3/4" total differential and 3/8" adjacent differential for risers, allowance for the bottom riser of an exterior set of steps. Not really an amendment, they have their own code but it is mostly the same as the I-codes. I have 2009 NC codes but not the 2012, not sure if they changed it but I doubt it.

  14. #14
    Moderator Daddy-0-'s Avatar
    Join Date
    Oct 2009
    Location
    Powhatan, Va.
    Posts
    850
    Thanks
    0
    Thanked 48 Times in 26 Posts
    I kind of agree with you on this one Skip. Of course it is hard to find a carpenter that can still cut a stair stringer so maybe we shouldn't confuse them more!!!
    Now accepting advertising.....

  15. #15
    Gold Member
    Join Date
    Nov 2009
    Location
    Foster, Rhode Island, United States
    Posts
    784
    Thanks
    9
    Thanked 50 Times in 46 Posts
    RI has always had and maintained in residential 8-1/4 rise 9" tread - we have smaller feet and longer legs than the IRC

  16. #16
    Sawhorse Paul Sweet's Avatar
    Join Date
    Oct 2009
    Location
    Richmond, Va
    Posts
    527
    Thanks
    13
    Thanked 46 Times in 38 Posts
    Stairs will require about 2 feet more run for a 9 ft. floor-to-floor height with the current IBC requirements. It doesn't make much difference in McMansions, but it won't fit if you're trying to build a 1500 SF cape with a straight stair parallel to the roof slope

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
  •