topic Re: Roof rafters not joining in Modeling

Roof rafters not joining

Zendrix — Mon, 02 Dec 2024 14:34:15 GMT

Hi!

Im creating a wood structure for my roof with roof wizard.

Everything is going ok, except for the fact that the common rafters are not joining the hip rafter on just one side. Its seems like the hip rafter is only showing up half of what it should be in widht.

What can possibly be happening?

Thanks,

Rui

Re: Roof rafters not joining

Zendrix — Mon, 02 Dec 2024 16:52:03 GMT

Also, on the same topic:

I am modelling an existing roof where the rafters i show in the picture need to stop against the hip rafter. Is there any 3d operation in order to "slice" my cross-rafters shown in the picture?

I tried to use the "split" tool, but at the end of the operation the rafter stays the same.

Thanks,

Re: Roof rafters not joining

insideau786 — Tue, 03 Dec 2024 02:12:55 GMT

thnaks. im having same issues, will try to solve and let know then

Re: Roof rafters not joining

Barry Kelly — Tue, 03 Dec 2024 02:48:07 GMT

Because they are objects and not beams, they will not trim automatically.

You will have to stretch the lengths of those purlins and mitre the ends.

Barry.

Re: Roof rafters not joining

Barry Kelly — Tue, 03 Dec 2024 02:50:39 GMT

I just tried the roof wizard quickly in version 28 and it worked fine for me.

It seems only one of your hips is affected.

Did it come out this way from the wizard, or did you accidentally change it?

Barry.

Re: Roof rafters not joining

Zendrix — Tue, 03 Dec 2024 12:36:58 GMT

Hi barry.

It came out of the wizard like that. After i could not find a solution i created a hip rafter only for that hip and placed the same values as a workaround, but its weird, it was showing 8cm width, but only showing like 4cm width in plan and 3d.

Regarding the other issue, the beam was created as a trimmer from the "roof extras" menu, so its not a random object, but a specific roof object (trimmer). When you say "mitre", what do you mean by that? i tried "split", i tried "trim", i tried SOE, but nothing could stop my trimmer at an angle.

Thanks,

Re: Roof rafters not joining

Barry Kelly — Tue, 03 Dec 2024 13:59:02 GMT

They are all just individual objects if you suspend the grouping.

If they are trimmers as part of the wizard, I don't know why they extend outside the roof.

But then I don't know why that hip was show as half thickness either.

Barry.

Re: Roof rafters not joining

Zendrix — Tue, 03 Dec 2024 21:31:06 GMT

No, the trimeers were made individually from the "roof extras" afterwards, not from the "roof wizard", thats why they are bigger, cause i am stretching them in order to then connect them somehow, by trimming, by spliting, whatever method.

The hip rafter that only shows up half of it is the one that came out of the wizard like that.

Re: Roof rafters not joining

Barry Kelly — Wed, 04 Dec 2024 01:41:42 GMT

The trimmers are objects so they can not be trimmed or split.

Just stretched and the end angle mitred if they allow that (I don't think the trimmers do mitre).

The trimmers are also placed between rafters, you must select the 2 rafters to set the length.

If you are looking at supporting the rafters, you will want to look at adding a purlin.

Barry.

Re: Roof rafters not joining

Zendrix — Thu, 05 Dec 2024 16:51:57 GMT

u r right about the trimmers. gonna try with purlins and let u know.

Re: Roof rafters not joining

Zendrix — Thu, 05 Dec 2024 17:01:12 GMT

hey Barry,

Just tried the purlins, it makes it much cleaner and precise.

How could i now make the joint between the 2 purlins in the corner cleaner?

Re: Roof rafters not joining

Barry Kelly — Fri, 06 Dec 2024 01:28:39 GMT

It seems that those purlin objects do not have any ability to alter the end angles (like you can with rafters).

The only thing you can try is Solid Element Operations (this won't affect the plan view).

Or place an actual beam instead of the purlin.

Barry.