How to model metal building gutter/gable trim?

[patricks]

Most metal building manufacturers use a matching gutter and gable trim profile, so that the gutter along the low eave will turn the corner and match up with the profile of the trim running up along the gable rake edge.

I'd like to model this so it looks correct, but the problem is that the gutter projects out 5 - 8 inches from the wall, while the gable trim only projects 2 inches or so.

I have tried making a generic profile and using it as both gable fascia and gutter, and changing the horizontal offset of the fascia so it moves back into the wall. The corners will not miter correctly. I have tried projecting the roof out a few inches along the low eave, placing a single fascia that turns the corner, then changing the horizontal offset of the whole run. It turns the corner and miters fine initially, but then breaks when I change the horizontal offset to anything other than zero.

I have tried moving the gable edge of the roof back a few inches, but that doesn't work because my wall below is attached to the roof, so I need the roof to be at the exterior face of wall.

I have one profile that will work if there is no horizontal offset. I tried making another profile for a different gutter/fascia shape, but that one doesn't want to turn the corner at all, no matter what I do.

Anyone have any ideas?

[wmullett]

This might help you: http://www.steelselect.com/index.php

[patricks]

Not sure how that website can help. I know what the pieces and parts look like in real life. I'm just trying to figure out the best way to model them correctly in Revit.

[cliff collins]

I think he meant the website has actual Revit families that could be used?
(I did not open any up or try to model them.)

You may need to just use an in place family for the fascia at the gable.
It will be very difficult if not impossible to get those profiles to miter correctly.

Can you post an example?

cheers....

[patricks]

Well normally when a fascia profile turns a corner to go up a slope, it will run horizontal after turning the corner for a short distance, then start to angle up the slope. I was not able to achieve this with normal fascia or gutter profiles.

What I ended up doing was making a profile for the fascia (2" wide) that could also be used as the face of the gutter, and then a plain rectangular profile (4" wide) to be used as the gutter "backup". So the gutter ends up being the combination of 2 solids. I placed the "backup" piece along the low eave, then placed the fascia profile on the edge of the backup. I made the fascia turn the corner at the end of the backup, and then run up the slope of the gable roof. Not too much more difficult and looks pretty good.

[Gadget Man]

Patrick,

Is it something like this that you're after? (see pictures below)

The first picture shows the complete roof, the second shows roof without two topmost layers (corrugated metal and hip capping) - for clarity.

Now, I know that my fascia (gutters can be only horizontal) had equal horizontal and vertical offsets on both sides, but what is stopping you from introducing a dummy "layer" as the second roof hidden within your main roof, just for the sake of creating the gutters and fascias? Then you could manipulate it as you pleased.

I know this is just a workaround but since I create several roofs one on the top of the other in every project (for the sake of external graphical representation as well as to have it ready for the detailing - just my way of working...), creation of one more "layer" (roof) doesn't matter anymore...