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 A "flying" ridgepole with iron rods -- Is this common?
#6025
12/18/05 01:02 AM
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Joined: Dec 2005
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Caoimhin
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I've got a 24' x 40' tractor barn built just after the turn of the 20th century. It's a combination timber frame/ stick frame, but here's the weird part: there's no ridgepole, but there are two sets of pseudo-rafters that come up toward the ridge from either side of several of the floor beams (they're not attached to the roof). They meet at a simple 2x8 "ridgepole" that's a few feet below the ridge. Through this ridgepole are fastened two iron rods that dive straight down through the two beams, and there's a large washer and nut on the underside of the beams.
I know little about framing, and am probably not describing this well (I could post a picture or two), but I've never seen this before. It seems original to the structure.
Anyone see this design before, and was it just to keep the floor from sagging?
Thanks!
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Re: A "flying" ridgepole with iron rods -- Is this common?
#6026
12/18/05 12:30 PM
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Al
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Re: A "flying" ridgepole with iron rods -- Is this common?
#6027
12/18/05 08:50 PM
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Caoimhin
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Photos of the barn in question: http://depts.husson.edu/caseyk/barn/ Any help in putting a name to this strategy (principal rafters that meet at a flying ridgepole with vertical iron rods that tie to the beam below) would be appreciated.
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Re: A "flying" ridgepole with iron rods -- Is this common?
#6028
12/19/05 02:58 AM
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Joined: Jun 2002
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John Buday
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Could you post photos of the "floor beam" to post conection and the rod to floor beam conection?
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Re: A "flying" ridgepole with iron rods -- Is this common?
#6029
12/19/05 04:13 PM
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Joined: Mar 2002
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Jim Rogers
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From what I could see, and how it's described, it seems to be some sort of truss to hold up the floor.
Maybe?
Whatever you do, have fun doing it!
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Re: A "flying" ridgepole with iron rods -- Is this common?
#6030
12/19/05 07:55 PM
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Al
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It looks like the simplest of King Post trusses. The rod is acting in tension holding the floor beam up at close to mid span and directing the load to the exterior wall timbers. I haven't seen it used like that before but it sure is a simple solution.
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Re: A "flying" ridgepole with iron rods -- Is this common?
#6031
12/20/05 01:37 AM
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Mark Davidson
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was the cieling(second floor) ever used to hold up weight?
like an engine hoist? you would probably see marks from the fasteners even if the system is gone....
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Re: A "flying" ridgepole with iron rods -- Is this common?
#6032
12/20/05 02:34 PM
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daiku
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Interesting. The designer clearly knew better than to hang the king rod from rafters that weren't attached to the tie beam. This scheme allowed him to drop the tie beam. Perhaps to increase the loft space? CB.
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Clark Bremer
Minneapolis
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Re: A "flying" ridgepole with iron rods -- Is this common?
#6033
12/21/05 11:24 AM
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Caoimhin
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Re: A "flying" ridgepole with iron rods -- Is this common?
#6034
12/22/05 10:19 PM
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Joe Miller
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No doubt, from looking through the pictures, that is a simple king "post" truss to support the floor. Doesn't appear to have anything to do with supporting the roof.
So cool.
Joe
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