Printed from the blog of Lori Greene, AHC/CDC, CCPR, FDAI
Email:, Blog: or

Jun 13 2012

WW: Unhinged

I’d like to tell you where I got these photos but then I’d have to kill you and that would be bad for business.  😀
They are posted with permission from someone who’s spending A LOT of time looking at fire doors lately.

And yes, these are fire doors:

And in case you’re not sure what you’re looking at here, it’s a view from above showing the section of the door’s top channel that’s missing, and the thru-bolts for the hinge in the void.

4 Responses to “WW: Unhinged”

  1. Nathan says:

    I suppose it IS easier to cut down a cover plate and rivet it to the edge of the door rather than get a filler plate.

    • Lori says:

      Sometimes the hinge reinforcement breaks off and falls into the door so there’s nothing to attach a hinge filler to. I’m not sure if that’s what happened here, but I’ve seen it before.

  2. Jess says:

    Hello Lori,

    some people think if they can cover up the hinge mounting area they think its ok and will go unnoticed (to most) all until the fire door assembly inspector pays a visit,

    as for the support hinge and the thru-bolts images,

    a support hinge (looks like the upper hinge for installs using a floorcloser but it isn’t, although im sure these have been used as a top pivot for offset floorcloser installs.

    is there a possibility that this door has or had at one time a floor closer installed before the LCN 4041 was installed?? and the hinges not replaced at the time the surface closer was installed??

    these support hinges are only to support a heavy door that’s using butt hinges, cracks and hinge knuckle separation can result from a door thats too heavy for the duty of the hinge, overuse and abuse or if it’s used as an offset pivot for a floor closer installation as seen in the 2 photos showing the damaged support hinge.

    Lori, can you ask the person who sent these photos to you if there was any old floorcloser under the doors that had these support hinges on??

    as for the last photo, the thru-bolts in the void, from seeing the pattern of the bolts, the thru bolts don’t appear to be for the closer, they appear to be holding the top pivot hinge on the door, (as thru bolts are used for those as well as panic exit devices and closers)

    even if the closer was mounted on push side, (there is no bolts at spring tube of closer, as these bolts are at that location) the bolts are too close together to be the bolt hole pattern for the LCN 4040/4041.

    -Jess the door closer doctor

Leave a Reply