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RE: Jambs at ICF Walls

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Thanks Mark,


I was hoping to not do this.  I have done it for some of the lintels on the project, but would like to keep it to a minimum if I can.  Also, I’m not in a position to pick the type on this project so I’ve got to get through it with the waffle type.



-----Original Message-----
From: Mark D. Baker [mailto:shake4bake(--nospam--at)]
Sent: Thursday, September 02, 2004 4:09 PM
To: seaint(--nospam--at)
Subject: RE: Jambs at ICF Walls




With little effort the contractor can cut out the icf  web between vertical cells. You then will get a solid jamb of length desired depending on how many vertical cells are joined by this method. Don’t be afraid to specify this method for achieving a jamb or column of more substance than the little waffle columns you otherwise get.


Personally, I like the forms that provide a solid concrete core, 6” or 8” thick, much less hassle to me than the waffle type.




Mark D. Baker


From: Joe Grill [mailto:jgrill(--nospam--at)]
Sent: Thursday, September 02, 2004 3:45 PM
To: seaint(--nospam--at)
Subject: Jambs at ICF Walls


I am doing the design on a residence where the walls are to be constructed of ICF walls (insulating concrete form walls) and of course things are not falling conveniently within the design tables given.  I have a situation where the header over an opening is loaded by a ridge beam; therefore the jambs at the opening are pretty heavily loaded.  I have designed the lintel over the opening to be concrete; therefore the reinforcing will extend beyond the opening 24”.  The walls will be what they call “waffle grid walls” so there are vertical concrete cells at 12” o.c.  I think the tributary wind load from the windows will transfer to two of the vertical cells at the jambs, and I would also think that since the concrete lintel will extend 24” beyond the jamb that the lintel reaction will also be supported by two of the vertical cells.  If the lintel reactions and the wind loads will not distribute to two cells then the jambs will not calculate as adequate, but if the distribution is acceptable then I should be O.K.  Is there any one out there familiar with this product that can tell me if what I am doing is acceptable?



Joe Grill