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Thread: Creative Ridge Beam
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02-25-2010, 06:40 PM #1
Creative Ridge Beam
Check out this ridge beam. This place was built in 1994 and remodeled in 04. The glue lam was about 20 feet long and supported on each end by one 2x6.
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02-25-2010, 06:49 PM #2
Re: Creative Ridge Beam
I"m not seeing the whole picture.
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02-25-2010, 07:58 PM #3
Re: Creative Ridge Beam
What size are those rafters? 2x10? They look bigger than you usually see. Also, since the glue lam has the rafters going over top of it instead of butting up to it, is it truly a ridge beam, or more of a purlin of sorts?
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02-25-2010, 08:10 PM #4
Re: Creative Ridge Beam
Pic 4 shows those 2X6's are the center webs of manufactured trusses, so the weight is shared by the truss chords. Also as John pointed out, the rafters are butted above the ridge beam, so a lot of the weight of the roof is directed out to the eaves by the rafters.
The ceiling joists should act as rafter ties in this case, but they are not visible here.
I don't see why they built it that way, but it does not look weak to me.
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02-25-2010, 08:19 PM #5
Re: Creative Ridge Beam
Do you think a 2x6 on each side end of the glue lam is enough support, also taking into consideration the snow loads. I know it's beyond the scope but the entire configuration JDLR.
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02-25-2010, 09:03 PM #6
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02-25-2010, 09:08 PM #7
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02-25-2010, 09:31 PM #8
Re: Creative Ridge Beam
Would you recommend additional evaluation?
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02-26-2010, 05:09 AM #9
Re: Creative Ridge Beam
The glue lam looks like it was meant to be exposed after framing.
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02-26-2010, 05:22 AM #10
Re: Creative Ridge Beam
My guess is that the remodel in 04' required cutting out webbing of trusses. The beam was slid in to take the weight. Engineered? Signed letter? I think I would ask more questions about the remodel.
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02-26-2010, 07:32 AM #11
Re: Creative Ridge Beam
I am going to recommend further evaluation just to cover my butt.
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02-26-2010, 08:55 AM #12
Re: Creative Ridge Beam
Why waste a nice glue lam beam in the attic they make cheaper ones
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02-26-2010, 10:29 AM #13
Re: Creative Ridge Beam
This appears to be a structural ridge beam. doesn't matter if rafters sit on top or hang off sides. Use of a structural ridge beam is normally to eliminate the need for collar ties or ceiling joists ie for a cathedral ceiling remodel. Can't see enough information about the 2x6 truss member bearing at the ends to comment.
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02-26-2010, 10:40 AM #14
Re: Creative Ridge Beam
In reality a 2x6 can hold a tremendous amount of weight. However being in Park City you are in an active seismic zone and I would question the moment and shear capability more than the ability to support.
The flex duct running below the beam looks small. Hopefully it's just for a toilet exhaust fan.
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02-26-2010, 04:01 PM #15
Re: Creative Ridge Beam
It appears to serve no real structural value for what appears to be a rafters to ridge gable type roof system UNLESS this beam span is intended to carry a future heavily loaded platform above the roof or a hoist below, in the case of a garage space below. In either case with the planned loading transferred to the ends and thus to the bearing walls (assumed) single 2 x 6 doesn't satisfy the crippling effect nor the safety factor. The total shear bolt capacities way exceed the bearing strength of the single 2 x 6.
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02-26-2010, 04:26 PM #16
Re: Creative Ridge Beam
If ya'll didn't like the OP's pic's, your going to hate the one's I took today!
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02-26-2010, 05:09 PM #17
Re: Creative Ridge Beam
Keep it coming Vern. Great pictures. Apparently every single rafter mis-cut too short, thus the spliced ends to make the bearing to ridge. Now tell me this is the tool shed or some other non-residential structure the building authority passed by!
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02-26-2010, 05:17 PM #18
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02-26-2010, 08:00 PM #19
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02-27-2010, 07:29 AM #20
Re: Creative Ridge Beam
If you look at the third photo, you can see a gap between the rafters and the beam at least on one side. It likely is only supporting its own weight. Is it possible that this beam is left from previous construction?
Either way, if I were doing a structural inspection on this one, I would likely say "OMG!" and state that I did not see a problem.
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