Results 1 to 13 of 13
  1. #1
    Join Date
    Mar 2007
    Location
    Charlotte NC Licensed in NC and SC
    Posts
    597

    Default Hinged truss plates

    Are these rotatable plates intended to be used to extend a truss top chord?


    This type of plate is used at the ridge on the same house where it makes approx a 40 deg angle.

    I found some other truss issues so calling for an engineer is a given, just wanting some more info/link on this application.

    Similar Threads:
    ***IMPORTANT*** You Need To Register To View Images ***IMPORTANT*** You Need To Register To View Images
    Inspection Referral SOC

  2. #2
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    26,250

    Default Re: Hinged truss plates

    Quote Originally Posted by Bruce King View Post
    Are these rotatable plates intended to be used to extend a truss top chord?


    This type of plate is used at the ridge on the same house where it makes approx a 40 deg angle.

    I found some other truss issues so calling for an engineer is a given, just wanting some more info/link on this application.
    That is the sure-fire sign of a manufactured home where the roof was folded back during transport, then folded up into position once on site and set up.

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

  3. #3
    Join Date
    Mar 2007
    Location
    Hudson, WI
    Posts
    645

    Default Re: Hinged truss plates

    Quote Originally Posted by Jerry Peck View Post
    That is the sure-fire sign of a manufactured home where the roof was folded back during transport, then folded up into position once on site and set up.
    Though used in MFG homes, that is not their only use.

    Scherer Brother Lumber Company - MiTek Truss Products


  4. #4
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    26,250

    Default Re: Hinged truss plates

    Quote Originally Posted by Michael Larson View Post
    Though used in MFG homes, that is not their only use.

    Scherer Brother Lumber Company - MiTek Truss Products

    I wonder if they have approval for use in high wind load areas?

    I didn't find any links to approvals, however, I did find an ES Report, ESR-1397 ( http://www.icc-es.org/reports/pdf_fi...S/ESR-1397.pdf ), which ... does not allow that use at the peak of the two top chords at the ridge ... it only allows for their use at the hinge location where, when opened, the hinged joint is opened 180 degrees.

    Also, they are required to be hydraulic press fit into the wood, no on-site nailing.

    The above is not what I am saying, it is what the ESR says.

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

  5. #5
    Join Date
    Mar 2007
    Location
    Hudson, WI
    Posts
    645

    Default Re: Hinged truss plates

    Quote Originally Posted by Jerry Peck View Post
    I wonder if they have approval for use in high wind load areas?

    I didn't find any links to approvals, however, I did find an ES Report, ESR-1397 ( http://www.icc-es.org/reports/pdf_fi...S/ESR-1397.pdf ), which ... does not allow that use at the peak of the two top chords at the ridge ... it only allows for their use at the hinge location where, when opened, the hinged joint is opened 180 degrees.

    Also, they are required to be hydraulic press fit into the wood, no on-site nailing.

    The above is not what I am saying, it is what the ESR says.
    Please read it again.

    The ICC report is only for the BEH-18 hinge plate and does not include the Peak Performer™ product used at the peak.


  6. #6
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    26,250

    Default Re: Hinged truss plates

    Quote Originally Posted by Michael Larson View Post
    The ICC report is only for the BEH-18 hinge plate and does not include the Peak Performer™ product used at the peak.
    That was my point - that was THE ONLY product approval I found, and it did not include that hinged plate for the top.

    Now your turn - find the product approval for that hinged plate at the peak.

    Maybe you can find it, I could not, and, if not approved, it is not allowed to be used - thus my point, which it seems you missed.

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

  7. #7
    Join Date
    Mar 2007
    Location
    Hudson, WI
    Posts
    645

    Default Re: Hinged truss plates

    Feel free to contact Mitek to satisfy your curiosity

    St. Louis Engineering Office
    MiTek Industries Inc.
    14515 North Outer Forty
    Suite 300
    Chesterfield, MO 63017
    Get Map | Satellite

    Phone 314-434-1200
    Fax 314-434-5343



    Edenton Engineering Office

    MiTek Industries Inc.
    818 Soundside Road
    Edenton, NC 27932

    Phone 252-482-7000
    Fax 252-482-7115




    Sacramento Engineering Office

    MiTek Industries Inc.
    7777 Greenback Lane
    Suite 109
    Citrus Heights, CA 95610
    Get Map | Satellite

    Phone 916-676-1900




  8. #8
    Jeff Whitley's Avatar
    Jeff Whitley Guest

    Default Re: Hinged truss plates

    The Hinge plate originally used in mobile home design has been adopted by alot of truss manufacturers. The plate shown in the photo is definitely that, a "BEH" hinge plate, here is an example, MiTek United States

    Visibly looking at the plate from the photo it appears that it is in the beginning process of separating, specifically at the pivot ( one corner appears slightly elevated). These plates are notorious for doing so, and generally comes from a lateral movement which wrenches the plate apart. I say this to offer a warning in that a plywood gusset will more than likely be needed to properly secure that joint again.

    As far as the high wind worries, don't its a pretty tough plate and holds well, if the truss mfg designed it so then I'm pretty confident its OK. Again the weak point is the circular pivot.


  9. #9
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    26,250

    Default Re: Hinged truss plates

    Quote Originally Posted by Jerry Peck View Post
    Now your turn - find the product approval for that hinged plate at the peak.

    Maybe you can find it, I could not, and, if not approved, it is not allowed to be used - thus my point, which it seems you missed.
    Quote Originally Posted by Michael Larson View Post
    Feel free to contact Mitek to satisfy your curiosity
    Now you are being like Watson - providing no useful information, just a phone number. Watson would provide a link to, say the NEC, and say 'it is in there', as though that was practical and useful information, you are doing the same.

    *I* stated I could not find the product approval for that peak plate, only for the hinged truss plate which is required to be hydraulically pressed into place and be extended 180 degrees, asking you to provide it because *YOU* said it was okay.

    You did not provide it. Make the call yourself, get the documentation, provide it and show us that it is okay - like you said it was.

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

  10. #10
    Join Date
    Mar 2007
    Location
    Hudson, WI
    Posts
    645

    Default Re: Hinged truss plates

    Quote Originally Posted by Jerry Peck View Post
    Now you are being like Watson - providing no useful information, just a phone number. Watson would provide a link to, say the NEC, and say 'it is in there', as though that was practical and useful information, you are doing the same.

    *I* stated I could not find the product approval for that peak plate, only for the hinged truss plate which is required to be hydraulically pressed into place and be extended 180 degrees, asking you to provide it because *YOU* said it was okay.

    You did not provide it. Make the call yourself, get the documentation, provide it and show us that it is okay - like you said it was.
    Jerry,

    Please don't take offense as none was meant.

    I never said anything regarding the suitability or approval for the Peak Performer hinge plate.

    I added additional useful information after your post to simply tell Bruce that modular homes are not the only use for the Mitek BEH18 hinge plate.

    I appears to me that you then decided to make some obscure point that was off topic as the peak connection hinge was not part of the original poster's question.

    BTW-I had already read the ICC link for the BEH18 when you posted it.
    There were 3 pages of links for Mitek products on the ICC link page.

    As you are the only one to have expressed an interest in the approval status of the Peak Performer hinge plate. I simply provided a phone number for to to track it down for your own information. As a litigation consultant, I would think you would want to know.

    Should I personally need the information in the future I would track it down at that time.

    Have a good day and let us know if you find any useful information.


  11. #11
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    26,250

    Default Re: Hinged truss plates

    Quote Originally Posted by Michael Larson View Post
    As a litigation consultant, I would think you would want to know.

    And when the time and need arises, I will know.

    I do appreciate your interest in my well being, though, thank you.

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

  12. #12
    A.D. Miller's Avatar
    A.D. Miller Guest

    Default Re: Hinged truss plates

    Approved or not, I would not want them on my house.


  13. #13
    Mike Truss Guy's Avatar
    Mike Truss Guy Guest

    Cool Re: Hinged truss plates

    Quote Originally Posted by Michael Larson View Post
    Though used in MFG homes, that is not their only use.

    Scherer Brother Lumber Company - MiTek Truss Products
    Quote Originally Posted by Jeff Whitley View Post
    The Hinge plate originally used in mobile home design has been adopted by alot of truss manufacturers. The plate shown in the photo is definitely that, a "BEH" hinge plate, here is an example, MiTek United States

    Visibly looking at the plate from the photo it appears that it is in the beginning process of separating, specifically at the pivot ( one corner appears slightly elevated). These plates are notorious for doing so, and generally comes from a lateral movement which wrenches the plate apart. I say this to offer a warning in that a plywood gusset will more than likely be needed to properly secure that joint again.

    As far as the high wind worries, don't its a pretty tough plate and holds well, if the truss mfg designed it so then I'm pretty confident its OK. Again the weak point is the circular pivot.
    Besides mobile homes, hinged truss plates are used in situations where the trusses are too tall when laid flat to transport safely over the roads. Also many truss manufactures use tables with rolling gantry presses that are limited to 12' to 15' in height.

    Hinged plates are quite common. I would not worry about them. They have code reports and have undergone extensive testing. The trusses designs were also very likely sealed by a registered engineer. In my 20 years in the work force, I am not aware of any failures of hinged plates.

    Anyway, that's my two cents...and total avoidance of any conflicts that appear to have taken place. Carry on.


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
  •