topic Re: After Creating Array Sweep Length/breadth is not changing with wall length/breadth in Revit Architecture Forum

After Creating Array Sweep Length/breadth is not changing with wall length/breadth

1832038mds — Sun, 05 Oct 2025 11:44:13 GMT

I am new to Revit and learning it from open source you tube videos, now I have to create a parametric Mild Steel water tank with rectangle/square(50X50) MS pipes as stiffeners. There are vertical stiffeners and horizontal stiffeners. I have created parameters for changing the length and breadth of tanks and it is working fine. I have also added parameter for height. Now, If I add one sweep (Stiffener) around the tank, it is working well with length and breadth changes but once I create array along the height of the tank, the sweep is not expanding/contracting with the walls the tank. I want all the elements to be parametric (Height, Breadth and Width of walls, horizontal stiffeners and vertical stiffeners)

"I want similar one.jpg" is sample tank what I am trying to draw.

"SBR Tanks MS.rfa" is the file I am working

Re: After Creating Array Sweep Length/breadth is not changing with wall length/breadth

blank... — Mon, 06 Oct 2025 06:28:08 GMT

You need to lock sweep path to ref planes, same ones that define tank dimensions

Re: After Creating Array Sweep Length/breadth is not changing with wall length/breadth

azad.Nanva — Mon, 06 Oct 2025 07:40:26 GMT

Use the instance family for the stiffener bars , I will add bars for you.

Re: After Creating Array Sweep Length/breadth is not changing with wall length/breadth

azad.Nanva — Mon, 06 Oct 2025 08:39:20 GMT

You can modify them as you wish; the main point is the method and concept of creating such a family. You can even design a separate array for each side.

Re: After Creating Array Sweep Length/breadth is not changing with wall length/breadth

1832038mds — Tue, 07 Oct 2025 05:46:54 GMT

@azad.Nanva Thank you very much for your efforts in creating this family. My purpose of creating this family is achieved, but still I am eager to know what was wrong with my modelling approach?.

Thanks.

Re: After Creating Array Sweep Length/breadth is not changing with wall length/breadth

1832038mds — Tue, 07 Oct 2025 05:47:53 GMT

Hi, I tried this and this is working well with one instance, if I create array of the same, it is not working in the same way.

Re: After Creating Array Sweep Length/breadth is not changing with wall length/breadth

blank... — Tue, 07 Oct 2025 05:54:06 GMT

@1832038mds wrote:
if I create array of the same, it is not working in the same way.

What's the issue? Share the family again, with your changes.

Re: After Creating Array Sweep Length/breadth is not changing with wall length/breadth

azad.Nanva — Tue, 07 Oct 2025 08:35:04 GMT

When you make an array, Revit actually creates a group.
If you change the size outside the group, Revit sees them as separate shapes and unlocks the locked dimensions, so the change doesn’t apply.
That’s why we use a nested family, where we can control the variables with type parameters.