Monitor Roof Truss
Monitor Roof Truss
(OP)
Has anyone ever done a monitor roof truss?
I am designing an outbuilding that is 30' wide and I want to place a truss with a 12' attic space and a monitor configuration. I just wondered if anyone has experience with these.
Thanks
I am designing an outbuilding that is 30' wide and I want to place a truss with a 12' attic space and a monitor configuration. I just wondered if anyone has experience with these.
Thanks





RE: Monitor Roof Truss
RE: Monitor Roof Truss
Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask
RE: Monitor Roof Truss
I am a bit concerned about the uprights on either side of the attic room. They would seem to have a lot of force pushing in on them.
I am coming up with a total height if 11'1 3/16". Is this transportable?
Any suggestions for modifications and cost savings would be appreciated.
Thanks again.
Cliff
RE: Monitor Roof Truss
This is going to be a tough one. This config gives little truss action - acts more like a beam. The bottom chord will probably be a 2x10 or 2x12 all the way across.
The height should be OK..
I would get with your local truss supplier sooner than later. They have access to software that can analyze these types of trusses very quickly and give you a price. They can also verify their shipping capabilites.
RE: Monitor Roof Truss
RE: Monitor Roof Truss
RE: Monitor Roof Truss
IF you can put a wall or beam down the middle - should not be problem!!
Go see a truss guy
RE: Monitor Roof Truss
RE: Monitor Roof Truss
In addition, there is shape-induced drift loading on this truss. The shape of the frame itself will cause snow accumulation on the lower roof areas, something which you need to take into account.
Your main option is to provide additional supports, preferably under the vertical wall elements of the frame.
Alternatively, it is possible to run a compression element from the ceiling chord down to where the lower sloped chords intersect the vertical members. These elements will resist the "push" of the lower chord, and will significantly stiffen this frame. The only drawback is that you're going to lose ceiling height because the members will cut into your room area. Maybe not a problem if its storage only, but if you want an office it may not be practical.
Approach a truss design company and they should be able to conceptualize this design for you and tell you if it works or not.
RE: Monitor Roof Truss
My house has a similar situation with a 34' gable span and a 15' attic room. Worked great, but I do not like walking on the 8:12 pitch roof.
Would trussing under the floor help my problem? I would not mind raising the roof a little if I can still make this work. I am also not completely against going to a gambrel roof. The gambrel just makes it hard to roof and I loose my side windows.
Thanks again,
Cliff
RE: Monitor Roof Truss
RE: Monitor Roof Truss
RE: Monitor Roof Truss
RE: Monitor Roof Truss