Has Anyone Ever Seen A Roof Framed In This Manner?

[dtontarski]

I have never observed a roof framed with other than rafters or engineered roof trusses - that is until yesterday.

Yesterday I inspected a 1986 rural built home with roof framing that ran parallel to the home's load-bearing walls.

Has anyone every observed a roof framed in this manner?

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[John Kogel]

Nope. Got more pics?

[Erby]

Yes, as long as the rafter ties are there, it's not a problem.

[Chad Fabry]

Yes, as long as the rafter ties are there, it's not a problem.

In this case they wouldn't be rafter ties, they'd be ceiling joists. There is no outward thrust- each framing member is a beam and all the load is vertical.

[Marc]

If the walls are not load bearing then beams are needed to transfer the weight of the roof/ceiling assembly to load bearing columns.

It's akin to an ordinary house with a garage; a beam across the front of the garage opening transfers the weight of the ceiling and roof to the sides.

Marc

[dtontarski]

Thanks for the replies.

[mjr6550]

I see this done in some old row houses with low-sloped gabled roofs. Just think of it like a flat roof-ceiling joists spanning from bearing wall to bearing wall. There is an issue with this type of framing when used on a roof that does not have a relatively low slope. The roof load is partially transferred to the narrow dimension of the joist and therefore the joists cannot span as long as if they were oriented vertically.

[Jim Baird]

...looks pretty short up there, and I think I see a break of slope into more than one direction? Low slope all the way, ergo the fatness of frame members?

mjr states description well.

[AbsoluteInspector]

Not yet

[Rob Amaral]

Not seen a modern light frame building, but that's a 'common purlin' method of running framing...