topic Re: Roof construction, can be cut with cut floor plane? in Modeling

Roof construction, can be cut with cut floor plane?

Anonymous — Tue, 23 May 2023 13:00:10 GMT

I have created roof in a shape of a pyramid. Then with Roof maker, i have created a wood construction on it, with rafters, trimers and so on.

The problem is, that this roof construction can be seen as a whole object, not cutted by the cut plane. The roof slab it self is cutted, but the construction is not. Why is this happening?

My cut plane is set to default 110 cm.

Re: Roof construction, can be cut with cut floor plane?

David Larrew — Tue, 13 Oct 2009 12:18:55 GMT

Unless your particular roof construction Objects have the ability to process the Floor Plan Cut-plane written into their GDL code, Objects do not follow the FPCP like building elements (Walls, Roofs, Columns, etc.)

Re: Roof construction, can be cut with cut floor plane?

Anonymous — Tue, 13 Oct 2009 13:23:18 GMT

Interestingly, most of the roofmaker objects do have FPCP sensitivity, especially the rafter objects. Look in their settings dialog, in the parameters > '2d representation' section you will find both Floorplan display and Projection settings.

If you set the floorplan display parameter to 'projected' they should display as if they were cut with the FPCP.

Re: Roof construction, can be cut with cut floor plane?

David Larrew — Wed, 14 Oct 2009 00:41:19 GMT

That is correct, RoofMaker Objects (as well as Skylight Objects) have the FPCP sensitivity written into their GDL scripts. So you have to set the Objects FPCP sesitivity from within the Object parameters (not the "Floor Plan and Section" Settings). Of course, you do have to set the "Show on Stories" to "All Relevant Stories" if you plan on using the FPCP parameter settings.

Re: Roof construction, can be cut with cut floor plane?

Anonymous — Thu, 15 Oct 2009 11:24:30 GMT

Thanks for all the answers. In past few days, while i was waiting for an answer in this topic, i have done this:

changed at the Jack Rafters settings, the "Floor plan display" to "Projected", and also set the "Axis line pen" to "19(white)".
Now everything is ok with the Jack Rafters, here:

image

But, the purlins are now the problem, as they don`t have a "Floor plan display" option (and i understand why, because they are horizontal, so they can`t be cutted by the cut plane), so i don`t know how to make them (the purlins) not to appear above the cut plane. Take a look at the picture above, and you can see that purlins appear above the cut plane.

Here are my settings for for the Jack Rafters, and Purlins:

image

What should i do?

Re: Roof construction, can be cut with cut floor plane?

Anonymous — Tue, 03 Nov 2009 09:45:07 GMT

any help related to my last answer please. Thanks.

Re: Roof construction, can be cut with cut floor plane?

Erika Epstein — Tue, 03 Nov 2009 17:44:53 GMT

After creating the roof framing, you can put the different framing elements on whichever layer you want. Would putting the purlins on a layers that does not show in the view in question solve your problem?

Re: Roof construction, can be cut with cut floor plane?

Anonymous — Thu, 05 Nov 2009 09:23:47 GMT

hm, you mean, just to set all purlins at one layer, and simply turn that layer off, and by that way to turn off all the purlins? Well, that is a good solution, it`s just: i want to see purlins below my cut plane, but not to see the ones above the cut plane. Is this possible?

Re: Roof construction, can be cut with cut floor plane?

Erika Epstein — Thu, 05 Nov 2009 16:06:37 GMT

I'm not seeing an automated answer. You could manually place the purlins you don't want to see on a hidden in plan layer,
or assign these to the story above and then have them show only on their home story.

Re: Roof construction, can be cut with cut floor plane?

Anonymous — Fri, 06 Nov 2009 12:19:34 GMT

if i have understood it clearly:

i have several stories under that roof construction, (i created a tall building in a shape of a 4 side pyramid), that means, that i have to manualy set (at each floor) the purlins (the ones that are above the cut plane) to a hidden layer. And repeat that at each floor. This seems to be a bit longer job. That`s why i am asking, is there any other way to automaticly set the purlins, not to show, above the cut plane?

Re: Roof construction, can be cut with cut floor plane?

Erika Epstein — Fri, 06 Nov 2009 16:31:25 GMT

I don't think there is an easy answer.
Another thought is to replace the purlins with a roof element that will display as you want.
You could try to run a second roof framing add-on and customize what is created. Instead of generating the purlins with the initial roof framing add-on, opt to not have them. Then in the second round simulate the purlins but using a different element; one that will display as you wish.

Re: Roof construction, can be cut with cut floor plane?

Anonymous — Mon, 09 Nov 2009 09:03:46 GMT

Thank you for all the help Erika, but it i haven`t understood your last answer. I am an archicad begginer, and that seems to be to complicated for me.

Another thought is to replace the purlins with a roof element that will display as you want

i don`t understand. Wich roof elements? I have created my purlins using a RoofMaker, and by that all purlins should be FPCP sensitive, right? Why do i need a new ones?

i haven`t understood this part also:

You could try to run a second roof framing add-on and customize what is created. Instead of generating the purlins with the initial roof framing add-on, opt to not have them. Then in the second round simulate the purlins but using a different element; one that will display as you wish.

I am apologizing for disturbance, i can see that you are trying to help me, but it seems that i am not quite understanding it.

Re: Roof construction, can be cut with cut floor plane?

Erika Epstein — Mon, 09 Nov 2009 16:41:26 GMT

Nothing to be sorry about, I will attempt to clarify what I said.

I was suggesting that you replace the purlins with an object that can be set to 0° and has the display option you want. Unfortunately when I try this with any of the other roof elements that you can set its slope to 0°, the object gets an error.

I think you would be better off creating a layer and manually changing the layer of the purlins you do not want to see on this hidden in plan view layer.

Re: Roof construction, can be cut with cut floor plane?

Anonymous — Tue, 10 Nov 2009 09:38:43 GMT

now i understand. Thanks Erika, i own you one.

I hope i will have a chanse to thank you some day.