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  1. #1
    Join Date
    Feb 2013
    Location
    Central Wisconsin
    Posts
    14

    Default finding true dimensional joists or ripping down lumber

    OK..I've searched and searched and cannot find a solution or answer. I'm replacing approx 8 2x8 (true dimension 1880) joists that span 12' in the basement that support the first floor in a balloon framed home. The joists are attached to a 10x10 main beam and the other ends rest directly on the fieldstone foundation. I cannot find true dimension lumber for anywhere near reasonable pricing. The original joists sit back about a foot onto the foundation to support the upstairs floor so notching a 2x10 wouldn't work. Can I purchase 2x10's and cut them down to a true 8 inches? If not where would you recommend finding the proper lumber?

  2. #2
    Join Date
    Jul 2010
    Location
    SoCal
    Posts
    5,438

    Default Re: finding true dimensional joists or ripping down lumber

    If you replace 2x8 joists with 1-1/2x7-1/2 you will have 1/2" gaps. You can shim them with pieces of 1/2" plywood, cut to size.
    Last edited by dj1; 03-14-2013 at 08:44 AM.

  3. #3
    Join Date
    Jan 2010
    Location
    Northern Virginia
    Posts
    1,003

    Default Re: finding true dimensional joists or ripping down lumber

    To match the greater strength of the old wider timber, use LVL's and rip them to the exact height. Be prepared to replace your ripping blade.
    Casey
    Remove not the ancient landmark, which your fathers have set.

  4. #4
    Join Date
    Oct 2012
    Location
    Houston, TX
    Posts
    249

    Default Re: finding true dimensional joists or ripping down lumber

    Do you need to replace? I plan on sistering, myself.
    It's this old house, not this built after your dad was born house.

  5. #5
    Join Date
    May 2008
    Location
    Pacific Northwet
    Posts
    1,418

    Default Re: finding true dimensional joists or ripping down lumber

    Find a local sawmill. They can custom cut lumber for you. Be sure to let them know what you're doing, so they can select the proper logs and orient the cuts to produce material suitable for your application.
    The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.

  6. #6
    Join Date
    Mar 2008
    Location
    nova scotia, canada
    Posts
    1,522

    Default Re: finding true dimensional joists or ripping down lumber

    if its being inspected it has to have engineers stamps on it otherwise it will fail
    fire up the saw and make some dust

  7. #7
    Join Date
    May 2008
    Location
    Pacific Northwet
    Posts
    1,418

    Default Re: finding true dimensional joists or ripping down lumber

    Quote Originally Posted by jkirk View Post
    if its being inspected it has to have engineers stamps on it otherwise it will fail
    Another reason to let the sawmill know exactly what you're doing. They may have access to a lumber grader who will inspect and stamp the lumber for you so it will pass inspection.

    (Not sure about where jkirk lives, but in the Pacific NW the lumber is certified by lumber graders, not engineers.)
    The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.

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