Stretchable Dynamic Block

[gottfriedjoseph01]

I'm trying to create a dynamic beam block that stretches vertically and horizontally. The issue I'm having is that I can't get the stirrups (represented by the dashed line) to stretch without the corners deforming or warping. The next issue I'm having is that I have slab block with a wipeout. The same issue, I want to be able to stretch the block with both directions with the wipeout following the shape. I need one end open so that this block can be added to other drawings where there isn't a cold joint when connecting to a beam. Thank you in advance.

[MMcCall402]

Something like this?   Two linear parameters with stretch actions.  One for each direction.  The selection areas cover the curves completely so they keep their shape when stretched.

I'm not sure ai fully under stand the slab question ...  seems like a similar approach.

[lauri_barnhart]

@gottfriedjoseph01 - Welcome! Thanks for your question.

Did the post by @MMcCall402 help you and answer your question?

If this helps, feel free to accept it as the solution.

This helps other users benefit from the shared solution.

If the issue persists, let us know with an update so we can assist further.

Thanks!

Lauri | Community Manager

[gottfriedjoseph01]

The beam block is great. I want to clarify something with the slab block. I wan to be able to stretch it in both directions but one end open with a wipeout in the background. The issue I'm having is that I can't seem to get it right with wipeout. It doesn't behave the way I want it to. The reason one end has to be open is because most details I draw don't have cold joints.

[lauri_barnhart]

Hello @gottfriedjoseph01, we appreciate you posting your question.

Are things working as expected now?

If you were able to fix the issue, please share what worked for you.

If the issue persists, let us know with an update so we can assist further.

Best,

Lauri | Community Manager

[Brock_Olly]

Can you give a more detailed description of the slab block?

[lauri_barnhart]

Hi @gottfriedjoseph01,

I wanted to check in and see if you saw @Brock_Olly's follow up request and if assistance is still needed or if you found a solution to your question already? Please share any available information so the community can assist you further.

All the best,

Lauri | Community Manager

[gottfriedjoseph01]

Imagine a rectangle. I want remove one side so that rectangle now becomes a 3-sided figure. I want to add a wipeout mask at the open end. I struggling to make that slab stretchable in both directions (x and y axis) with the wipeout frame stretching as well. I will include a drawing with slabs of various sizes with and without the cold joint. I want to reiterate that the problem is stretching in both directions with the wipe out frame. I will also include a steel beam block that has a wipeout frame that stretches to show the effect I'm trying to recreate. I know its possible because of the steel beam block but I can't reverse engineer it.

[h_s_walker]

@gottfriedjoseph01 The big square I've ringed in the image below is the wipeout, and as you can see it is associated with the stretch (it's actually associated with stretches 6 to 9) so that when the width / length is changed the wipeout will stretch with everything.

[charleswilson0090]

This sounds like a dynamic block issue rather than just a simple stretch action problem. For the stirrups, you may need to include the dashed linework fully inside the stretch frame and use proper linear parameters with chained actions if both directions must update together. For the slab block with wipeout, make sure the wipeout boundary is included in the stretch selection set, but keep the open end outside the affected geometry so it does not close or distort when the block is stretched.

[gottfriedjoseph01]

I'm not worried about stirrups the beam block is fine now. The slab block is what I can't figure out now.

[Blue_Mojito]

If Im interpretating correctly, I think the attached (clouded) is what you're looking for. Let me know if it wokrs. It's just the visibility attribute, and you'll have to mess with drawing order of the block itself.

[charleswilson0090]

Ah, got it. Let's focus on the slab block then.

The trick with a wipeout inside a dynamic block is ensuring the wipeout boundary frame itself is fully caught by the crossing window of your stretch action. If the frame's endpoints aren't explicitly in the selection set, the wipeout won't stretch with the rest of your geometry.

Also, double-check your DRAWORDER. Sometimes after stretching, the wipeout can visually jump ahead of or behind your line work. Let me know if adding the boundary frame to the selection set does the trick!

[babarbrohi820]

I’m trying to create a dynamic beam block that can stretch both vertically and horizontally.

The main issue I’m running into is with the stirrups (shown as a dashed line)—when I stretch the block, the corners start to deform or warp instead of staying clean and consistent.

I’m also working with a slab block that includes a wipeout. I want the block to stretch in both directions while keeping the wipeout aligned correctly with the shape. Additionally, one end needs to remain open so it can connect cleanly with other drawings without creating a visible cold joint at the beam connection.

Has anyone dealt with this before or found a reliable method to keep geometry stable while using dynamic stretch actions? Any advice would be really appreciated.

[navya_gelli]

Hi @gottfriedjoseph01,

Did the info from help Blue_Mojito, babarbrohi820, charleswilson0090 help answer your question?

If it did, it’d be great if you could click the "Accept Solution" button so others can easily find it too.

If you’re still needing more help, feel free to share an update here. The community will be happy to jump in with any next steps to help you get where you need to be.