How do you change the sizes on a PRECAST- INVERTED TEE?

[flaviusb1887]

Does anybody know how to change the sizes for a precast inverted tee foundation type? I want to make it smaller so it is not 24" on the stem wall, but 12". I keep getting an error message. I tried doing any way I could think of. I wonder if there are some parameters you can't change. Is there any way to make a new one? Anybody?

[sohocad]

need to see...?

[beegee]

Maybe post the family, Flavius ?

I don't think that family exists in the standard metric revit library we use.

[flaviusb1887]

I think you are right beegee. I am in the U.S. and I don't usually use the metric so I apologize. In the imperial library it is in the Structural, Beam, and then you have several options. Is there htings in the metric library that I can use or it's the same things just in metric?

[beegee]

Open the family and adjust the parameters shown on the attached.

If you need to do this often, copy the family and make the size you use as standard, or add other parameters to make the family respond to your requirements.

http://www.zoogdesign.com/forums/phpBB2/download.php?id=1753

[Dean Camlin]

Just curious, Flavius: Do you normally use a precast inverted tee as a foundation piece? Around here we would just pour concrete in a trench as the strip footing & then build the foundation wall on it with block or site-formed concrete. Inverted tees are used to carry precast tees or planks as part of the superstructure. Or am I missing something here?

[flaviusb1887]

I tried to use the inverted tee for foundations so I can take advatage of them in section cuts. But forget because when they intersect each other, they don't join to form a nice miter angle like walls. They actually repel off each other which is strange to me. Does anyone know how to form a wall wih a nice stem and footing on the bottom all in one piece? :shock:

[gregcashen]

Create a sweep? Could even be part of the exterior wall definition...use a vertically compund wall with a hosted footing sweep. I can imagine several other issues with this though.

I personally use walls. I use one wall for footing, another for stem and then the wall above.