I have had a designer calculate the roof construction and concluded that we must have a steel beam in the roof ridge due to deflection (there are/can be large loads) since we will have an open ceiling. As he sketched, the steel beam will be placed up in the ridge, and then the rafters will be attached to the beam. When I was thinking about how our current house is constructed, we have a glulam beam that is suspended, i.e., it is fastened under the rafters. Admittedly, this is a much smaller construction as it only involves 2 broken rafters.
Could there be any idea of making the steel beam suspended, or would it only be worse?
Since I haven't worked with the steel/wood combination, I wonder how to attach the wooden rafters to the steel beam (there should be some good screws to attach fittings)?
Could there be any idea of making the steel beam suspended, or would it only be worse?
Since I haven't worked with the steel/wood combination, I wonder how to attach the wooden rafters to the steel beam (there should be some good screws to attach fittings)?
If the beam is between or under the trusses, it probably doesn't have much impact on the strength, but I think you should choose glulam even in your new house as I have had bad experiences with steel-wood constructions due to the movement of steel with temperature changes, which results in a house that makes noises/snaps.
Thanks for the interesting input regarding the sound from the steel beam, I hadn't actually reflected on that...
Of course, I would also prefer to have glulam, but since the deflection became too large due to the loads, I unfortunately believe that we must have a steel beam with the current construction. The span between support points will be 7500mm, and the construction will have a heavy roof and be in snow zone 4.5, which is why the loads become relatively large.
I am attaching a draft that I received for the roof construction, perhaps there are other solutions to the problem?
The requirement is to have it open up to the ridge, but then it will be insulated down a bit...
Of course, I would also prefer to have glulam, but since the deflection became too large due to the loads, I unfortunately believe that we must have a steel beam with the current construction. The span between support points will be 7500mm, and the construction will have a heavy roof and be in snow zone 4.5, which is why the loads become relatively large.
I am attaching a draft that I received for the roof construction, perhaps there are other solutions to the problem?
The requirement is to have it open up to the ridge, but then it will be insulated down a bit...