Cricket/Saddle Problem?

[lgswe]

I have a area on the roof of this addition with three different roof pitches. I would like to close the open area in with a roof plane attached it to the three pitches to avoid snow and ice build up and good water run off. As you can see from the attachment all three sides are at different angles and none are horzional. I've tried different approches but so far nothing has worked. I can get a manual roof plane to attach to two of the roof planes but not all three. I hope that from the attachment and what I've mentioned above you will understand what my problem is and what I'm trying to do. I'm using 10.8 Thank you.
Larry

[Gene Davis]

I'm just a beginner with Chief, but I'll take a shot.

I don't know how you can solve for the pitch, baseline plan orientation, and topmost elevation of this cricket plane in Chief, but I know I could do it in Sketchup.

With those three variables known, you can create a roof plane out in space away from the building, rotate it to the correct planview angle using CAD, elevate the whole thing so its top "ridge" is at the elevation needed, then reference-move it into place, and snap the two corners where needed.

It might work for you, but the key is the 3D solution for the plane, first.

[BREEZE WOOD]

- A zoomed out view might help for a clearer idea of what is going on - almost appears what is needed is a wall built under the shed roof first then a cricket to shed over the gable overhang - but why the Gable overhang narrows to the adjoining roof doesn't make sense unless it is just the angle of the view.

[TJD DESIGNS]

Larry,
Is there any reason why you can not just pull the shed roof section over the wall-as in the pic?


Tammy

[lgswe]

Tammy
I had thought about that as a last choice because I didn't care for the look that it gave me.
Mike
I also thought about the small shed wall but it would be a pain to build (real life) and to me, the look would show up like a big question mark. I thought that just having it a roof would look much better. From the ground the eye would hardly pick it up. Also I just want to know if I can do it in CA 10.8.
Larry

[billemery]

This is a tricky little piece of geometry.

[kernsdan]

I vote for Tammys idea. Much cleaner looking

[BREEZE WOOD]

- From the ground the eye would hardly pick it up

- In your dreams only - Tammy has the practical solution/basis for workaround - Something different than the usual might be a good idea but not noticing it from the ground may be why the usual is usually chosen.

[billemery]

This is the construction that establishes a true length horizontal line across a part of the roof plane, it is the key to the solution. This tells us the angle of the roof baseline.

The other piece is to take a cross section perpendicular to this line to find the pitch that is required.

With these things established we can draw the roof plane, and simply use the "join roof plane" tool to trim everything to fit.

[lgswe]

Bill
Thanks for the info. Where there is a way there is usually a solution.
Mike
Because of the lay of the land and the angle of the roof, the area is very difficult to see and it does eliminate the snow build-up and water trap that one would have to contend with. Thanks to all.
Larry