Results 1 to 16 of 16

Thread: TJI question

  1. #1
    mathew stouffer's Avatar
    mathew stouffer Guest

    Default TJI question

    What is the purpose of the drywall along these TJI's.

    Thanks

    ***IMPORTANT*** You Need To Register To View Images ***IMPORTANT*** You Need To Register To View Images
    Inspection Referral

  2. #2
    Ron Bibler's Avatar
    Ron Bibler Guest

    Default Re: TJI question

    Hey mat was there any sound equiptment in and adjacent room ?

    Thats the only theing i can think of...

    Best

    Ron


  3. #3
    Join Date
    Mar 2007
    Location
    Oregon
    Posts
    2,365

    Default Re: TJI question

    Was this attached housing? It looks like fire separation.... or an out of work drywaller with time to kill.


  4. #4
    Mike Truss Guy's Avatar
    Mike Truss Guy Guest

    Default Re: TJI question

    Perhaps they cover up somebody's mistakes with a hole saw.


  5. #5
    Join Date
    Feb 2008
    Location
    Chicago IL
    Posts
    1,984

    Default Re: TJI question

    Dude, that's that special structural drywall developers like to talk about. Fixes and holds up everything. The only thing missing is some Durabond to give it that hardened steel finish.
    OK, I know ,,,

    www.aic-chicago.com
    773/844-4AIC
    "The Code is not a ceiling to reach but a floor to work up from"

  6. #6
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    26,243

    Default Re: TJI question

    Looks like more drywall on the far side of the insulation.

    Was this the garage side? If so, needs to have drywall up to the floor deck above, and, if that is living space above a garage it needs 5/8" Type X on the ceiling too.

    If is it what Matt said "Was this attached housing? It looks like fire separation." then there are larger problems is that is a fire-rated wall assembly. The idea with the fire-rated wall assembly between adjacent structures is that one side can burn down (within the time period protected) and the other side remain standing, if those floor joists go all the way through from unit to unit - one unit falling in on itself will take the other unit with it.

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

  7. #7
    Join Date
    Mar 2007
    Location
    New Mexico
    Posts
    1,258

    Default Re: TJI question

    Terribly misguided attempt at web stiffeners?

    Jim Robinson
    New Mexico, USA

  8. #8
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    26,243

    Default Re: TJI question

    Quote Originally Posted by Jim Robinson View Post
    Terribly misguided attempt at web stiffeners?
    Jim,

    I considered that too, but there is drywall behind the insulation ... leading me to think more toward "separation" or "fire-rating".

    You could be right, and that would mean that worker knew nothing about construction.

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

  9. #9
    mathew stouffer's Avatar
    mathew stouffer Guest

    Default Re: TJI question

    There is an attached town home on the opposing side.


  10. #10
    Join Date
    Mar 2008
    Location
    southern ontario
    Posts
    130

    Default Re: TJI question

    Just checking, but in the case of that being another townhouse on the other side of that wall, there is no way those joists would be allowed to go from one side through to the other is there?


  11. #11
    mathew stouffer's Avatar
    mathew stouffer Guest

    Default Re: TJI question

    It did not appear to be the case.

    ***IMPORTANT*** You Need To Register To View Images ***IMPORTANT*** You Need To Register To View Images

  12. #12
    Join Date
    Feb 2008
    Location
    Chicago IL
    Posts
    1,984

    Default Re: TJI question

    Based on another townhouse on the other side, I'm going with their idea of fire protection for the ends of the joists.

    www.aic-chicago.com
    773/844-4AIC
    "The Code is not a ceiling to reach but a floor to work up from"

  13. #13
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    26,243

    Default Re: TJI question

    Quote Originally Posted by mathew stouffer View Post
    There is an attached town home on the opposing side.
    Quote Originally Posted by Brian Robertson View Post
    Just checking, but in the case of that being another townhouse on the other side of that wall, there is no way those joists would be allowed to go from one side through to the other is there?
    No, they would not be allowed to go through.

    Quote Originally Posted by mathew stouffer View Post
    It did not appear to be the case.

    Matt,

    I'm confused.

    You are saying that those joists "do not" go through?

    How deep is that bearing and how deep is that wall? Those look like they are bearing on the full width of the wall?

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

  14. #14
    Christopher Gorton's Avatar
    Christopher Gorton Guest

    Default Re: TJI question

    Utility chase? Ventilation? Fire blocking seems most likely as the drywall is doubled up.
    Squash blocking? If the inside piece was not run between the 1x3 and instead set on top as the outside one is that would be my guess.
    Acoustical vibration dampener?
    Stop that squeaking noise its driving me crazy?


  15. #15
    Bryan D. Carlson's Avatar
    Bryan D. Carlson Guest

    Default Re: TJI question

    Matt, One of my recent projects was a recording studio. We used sheetrock in a similar way, in the webbing and on the underside of the flooring. This was to add more dimension for more sound isolation.


  16. #16
    Join Date
    Jul 2008
    Location
    Snowbird (this means I'm retired and migrate between locations), FL/MI
    Posts
    4,086

    Default Re: TJI question

    This is from the unfinished, insulated, conditioned, basement or semi-heated garage below living space & adjacent...yes?

    Purpose is to draft block and thermal break the tails & hangers to the separation wall and complete a floor/ceiling assembly.

    Hangers and squash wrapped in gyp, and fire/draft blocked, 2x5/8" indiv taped & mud to separation wall, then missing floor/ceiling finish details can be completed, looks to be set up to use resilliant channel 16" OC. 1/2" ceiling board, 5/8" X; an L518, L530, or L538 Assembly.


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
  •