Unusual Ridge Framing


Greetings,

Anyone ever seen ridge framing like this? This area of the roof appears to be an addition. No observed deficiencies on the top side of the roof. Would anyone call this out as suspect, or totally incorrect? Would anyone recommend an engineer examine? Thanks for the input.

Never seen that before! Anxious to hear other comments.

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It looks to be some type of modular roof. The rafters were laid on top of each other(you can see some of the hinges at the middle left edge of picture) during shipping and secured with the little metal gusset plates. At destination, the gusset plates are knocked loose(see teeth marks) and the vertical supports added. It does look bizarre though

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I agree with Yu, it’s some strange way to design a prefabricated house roof system.

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That is interesting… Are there walls underneath those purlins? The weight of those rafters will be pushing straight down, unlike a traditional ridge board where the rafters would be pushing against each other.

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Yes, Modular home, you can see the hinge in the pic.

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Ridge beams take vertical loads and compress the laterally through the ridge beam, into the other side. This has fasteners, only with their shear strength, holding the roof and anyone on it up. I’ve never seen this, looks terrible. I would call out the unorthodox framing to be verified by a Structural Engineer

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It was most likely engineered

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I would be recommending a structural engineer without a second thought.

Why? Modular homes are engineered,

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As I said, if the purlins are supported by walls below, there wouldnt be any concern for a structural engineer.

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:sweat_smile: Initially, because it just looks wrong in my experience…even with the purlins Daniel is mentioning, although, I was rethinking my post immediately after posting. I’ve never seen or inspected a modular home so I’m green in modular home engineering.

I should follow @dwiggers lead next time!

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Agreed, the purlins taking the load is the only thing that makes sense with this design. Then the ridge doesn’t need a ridge beam to transfer loads. I was too distracted by the madness up top

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Thanks to all for your insight and taking the time to offer your thoughts. Some new information has come to light. This is in fact a modular home, shipped from North Carolina and constructed in New Orleans. 4 new photos attached…The circled portion of the building is the roof structure in question. This portion of the home is the primary bedroom with bath and closets at the far rear. The interior photo is from the vantage point of looking to the rear from the entrance to the primary. The only interior walls in this section are perpendicular to the exterior walls and partition the bath and closet. It appears that most of the vertical purlins are not resting atop load bearing walls. No additional beam support was visible in the attic. The front attic has typical framing with no question marks. The abnormal ridge is really throwing me off but like @sbridges2 said, why recommend an engineer when this framing was engineered? Does anything added here firm up any opinions? Many thanks!

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