Timber Joists Cutting Overlapping Volume From Wall

[Anonymous]

I'm trying to design a very basic floor using timber joists. I'm adding the joists using a beam system.

I'd like the joists to penetrate the walls of the building similar to these links, here and here. However I can't seem to achieve this as the joist is stopping at the interior face of the wall as shown below:

The make up for the wall is shown below:

Is there a way to do this using a beam system?

I've seen that there is a architectural floor which has a joist built into it, but I can't find how to vary the width of each individual joist or spacing between joists. I'd like to end up with a floor plan showing the individual joists and can't see how this can be done using the architectural floor option.

[cbcarch]

Use Join Geometry, select the Floor and Join to the Wall.

[Anonymous]

It won't let me select the beam system, or an individual joist.

Even if I select the beam system or joist first, when I click join, it asks "FIRST pick: Select solid geometry to be joined" and I can't select the system or joists.

[cbcarch]

Yes--Sorry, I misunderstood a bit.

-You can't join geometry with a beam system, but you can with a floor.

-You try this: create an in-place Generic Model Void and use Cut Geometry in the wall to make a "beam pocket", and then extend the joists/beam system into the beam pocket.

-You could also use a Reveal to cut the Beam Pocket, then extend the joists into it.

[ToanDN]

You can right click on the end blue grip of a beam and disallow join.

[Anonymous]

Just a few questions:

"...create an in-place Generic Model Void..."

Can you give me a quick pointer on how to do this? I'm not sure where to start.

"...extend the joists/beam system into the beam pocket..."

Weirdly, the beam system seems to be extending into the wall (see image below), but the beams aren't actually extending to the end of the grid, just stopping at the wall.

 

[cbcarch · Accepted solution]

Void: 

https://forums.autodesk.com/t5/revit-architecture-forum/create-a-void-family-to-cut-elements-in-proj...

However--

-The Reveal may be an easier/faster way to cut a beam pocket in the wall.

 -Joist extensions-- try editing the footprint sketch of the beam system further into the wall.

-The joists in the beam system likely have an "extension" property, try changing it to make them extend further.

[Anonymous]

Wall is now plastering around the cut out. 

I give up....

[ToanDN · Accepted solution]

See attached.  I have no issue doing what you are trying to do.  1st image shows the beam system and 2nd image shows the holes in the wall created the the beam system.  No manual punching holes needed.

Download 2019 file from this link:

https://1drv.ms/u/s!AkhFRSSD5VPngvkQENqX9qCr-HjnxQ

[Anonymous]

Yeah that's exactly what I'm after. 

If you have a chance, would you be able to save that file down to 2018? I'm not quite up to date with Revit 2019 yet....

Thanks for all your help on this.

[ToanDN]

Here is the trick: use a cast in place concrete beam and change the material to wood timber. It will allow join with walls and other elements. You may try go edit the original wood beam and change model behaviour to concrete. It may work but I haven't tried so I can't confirm. But the 1st trick is what I did to the sample above.

[Anonymous]

Got it working now with your first solution! Many thanks again for your help.

I think I'd rather go down the route of your original proposal as it seems the more correct way to do it. I think changing it too and from beam types feels a bit too much like you're tricking Revit which might lead to issues further down the line.