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Ability to Schedule "Length of Reference Line" for Beams

Matt Balaam
Contributor
We need the ability to schedule the length of the reference line for beams.

It is incredibly frustrating not being able to schedule the length of the reference line of a beam. It can be scheduled for walls, so why not beams? Length Left and Length Right are not adequate in a lot of situations.

Example: Eave/gutter profiles. The beam has eave sheets on one side of the reference line and fascia & gutter on the other yet industry standard is to schedule the length at the edge of the roof plane i.e. the reference line. Currently we can only schedule the inner edge of the eave (not useful) or the outer edge of the gutter (also not useful).
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8 REPLIES 8

Lingwisyer
Virtuoso
Have you tried using a railing instead of a beam and scheduling that instead? It allows your eave/gutter to be associated with your roof which is nice.

Related thread: https://archicad-talk.graphisoft.com/viewtopic.php?f=20&t=61547&hilit=railing+eave



Ling.
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Barry Kelly
Moderator
Matt wrote:
Example: Eave/gutter profiles. The beam has eave sheets on one side of the reference line and fascia & gutter on the other yet industry standard is to schedule the length at the edge of the roof plane i.e. the reference line. Currently we can only schedule the inner edge of the eave (not useful) or the outer edge of the gutter (also not useful).
This is a good example.
Personally I model my eaves and gutter separately, but we should have consistency.
We can schedule the length of the wall ref line, we should be able to do the same for the beam.

If you want to play around with 'Properties' and 'Expressions in properties', then you could take the left and right length and apply a shift to calculate the length of the fascia position.
Then schedule that.

Barry.

One of the forum moderators.
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Matt Balaam
Contributor
Lingwisyer wrote:
Have you tried using a railing instead of a beam and scheduling that instead? It allows your eave/gutter to be associated with your roof which is nice.

I'd never thought to try using a railing but after a bit of quick testing there is definitely potential! Thanks for the idea.

At the very least it can be scheduled correctly.
AC21 (8002 AUS FULL) | AC24 (4018 AUS FULL)| Windows 10 Pro | Intel Core i7-6700 @ 3.40GHz | 16GB RAM | NVidia Quadro K620

Matt Balaam
Contributor
Barry wrote:
Personally I model my eaves and gutter separately, but we should have consistency.

Modelling separately in our case just opens up another possibility for model inaccuracies when modifications are made, particularly given the only reason we would have to do it is the scheduling of the length. For all other purposes the single profile works well.
Barry wrote:
If you want to play around with 'Properties' and 'Expressions in properties', then you could take the left and right length and apply a shift to calculate the length of the fascia position.
Then schedule that.

I have toyed with this idea, the hard part being working out the shift as all profiles are different widths and some have horizontal stretch planes to adjust the width of the eave sheet. Would also be hard to determine what type of join is at each end (no join, internal corner, external corner) within the available parameters of the expressions in properties as this will also impact the calculation.

Seems like a lot of complicated calculation for something that should be a standard schedule option.
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Laszlo Nagy
Community Admin
Community Admin
Matt wrote:
We need the ability to schedule the length of the reference line for beams.

It is incredibly frustrating not being able to schedule the length of the reference line of a beam. It can be scheduled for walls, so why not beams? Length Left and Length Right are not adequate in a lot of situations.

Example: Eave/gutter profiles. The beam has eave sheets on one side of the reference line and fascia & gutter on the other yet industry standard is to schedule the length at the edge of the roof plane i.e. the reference line. Currently we can only schedule the inner edge of the eave (not useful) or the outer edge of the gutter (also not useful).


How about using the "3D Length" parameter in the "General" group?
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Laszlo Nagy, Lead Moderator, Community Admin
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Barry Kelly
Moderator
LaszloNagy wrote:
How about using the "3D Length" parameter in the "General" group?

I tried this and it just uses the 'left' length - not the reference line.

Barry.

One of the forum moderators.
Versions 6.5 to 25
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
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Matt Balaam
Contributor
Barry wrote:

I tried this and it just uses the 'left' length - not the reference line.

Barry.

It doesn't even seem to be using the Left Length. In my quick test I got Left Length = 113.85m, Right Length = 100.78m and 3D Length = 119.15m. All totally different and not sure how the 3D Length ended up being so much longer than any other length.
AC21 (8002 AUS FULL) | AC24 (4018 AUS FULL)| Windows 10 Pro | Intel Core i7-6700 @ 3.40GHz | 16GB RAM | NVidia Quadro K620

Barry Kelly
Moderator
Interesting.
I just tested with a couple of beams mitring at a corner.
Ref lines 1000mm long with a 500mm offset to the beam.



Barry.

One of the forum moderators.
Versions 6.5 to 25
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
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