The Ohio State University Building Design Standards specifically prohibit the use of mineral core doors. Does anyone know if there is such a thing as 90 minute fire door available without a mineral core and who that manufacturer would be?
Try Steelcraft Div. of Ingersoll-Rand
How about solid core wood doors?
Thanks, Ralph, will look at Steelcraft (I didn’t know they did wood doors?). My understanding from the project architect is that his research has indicated that solid core wood doors aren’t rated up to 90 minutes.
I guess I should clarify that by saying solid wood core doors are not rated up to 90 minutes …
Didn’t meaan to imply but one option. Steelcraft is steel only.
For wood try–
http://www.4specs.com/s/08/08-1420.html
Also;
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Ohio Valley Door Corporation.
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Lambton Doors.
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Algoma Hardwoods, Inc.
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Eggers Industries, Architectural Door Division.
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Marshfield Door Systems, Inc.
Tracy,
I have done some checking and I don’t find any wood door manufacturer that does 60 minutes or above with a wood door that is NOT a mineral core. This included stave core, lumber core (and even those that do stile and rail doors have a sandwich with a mineral core in the middle to get to 90).
I have found it not uncommon in some university documents to see something like this for mineral core doors. They typically don’t have a product in mind, they just don’t want mineral core doors. The response that I have found that works best is to state that you would request information about the non-mineral core door they do use where a wood door is required. Often the return is that they don’t want you to use a wood door then, or if you do go and look at what they are using, its a mineral core wood door.
None of the door manufacturers listed in the post above makes a 90 minute non-mineral core wood door.
William
Colin-
It is my understanding that there arent any 90-minute approved wood core doors on the market, as these products historically have not passed the fire testing. As a result, mineral core has been the standard for 90-minute constructions in the wood door market. In fact, until recently, only mineral core doors were approved for 45-minute applications as well, though recent industry developments have now allowed particle core, UFF particle core, FSC particle core, and agrifiber core to attain a 45-minute rating for certain constructions.
Also, to address Tracys comment regarding Steelcraft, it is my understanding that they do not supply wood doorsonly metal.
Thanks,
Bridget Diederichs
Marketing Communication Specialist
Eggers Industries
Perhaps yet another mis-statment or error, but please note the following–
The only thing they don’t label in the Ohio Valley literature is the core itself. In fact, they really don’t talk about the core at all, which if it was not mineral core I am sure they would be out there shouting it to the world as the only one.
Of course, the question arises as to why they don’t want mineral core. Maybe there were problems with insufficient blocking or screw holding that could be solved with the right spec.
Ceco makes a “stainable” steel door that looks like a wood door. It is rated up to three hours.
We have one in our office that is ten years old (between our shop and office) and the finish still looks great.
I believe Steelcraft and other manufacturers make a similar product.
http://www.cecodoor.com/default.aspx?Doc=products/maderamod.htm
That’s what I was thinking, John, especially with closers, and that they don’t want through-bolting (who does?).
Thank you everyone for your great input! I will pass this along to the project team.
I believe the reason stated in the OSU BDS is specifically related to what they consider an inadequacy of blocking in the door.