Sloping garage slab

[jwilhelm]

I was just creating a garage slab that slopes & used the "ramp" to create it. I noticed that you cannot get a spot elevation from a ramp. Is it possible to slope a floor? or would one use a roof?

[Roger Evans]

Yup just use the slope arrow for floors

[zanzibarbob7]

I was also creating a sloping garage slab but to a center drain. I created four different floor slabs, each using the slope arrow. The result was four triangular floor slabs with the correct slope and convergence point. I then placed an opening in the center but had to create it for each of the floor slabs to get the circlular drain opening. I tried to join the floors but was unsuccessful.

I would like a result that looks like I would get with a solid revolve. Smooth!!

Is there an easier way to do this?

[beegee]

An easy way is to use create an in-place void blend, with the base set at the waste outlet level and the top at the slab level. Start with a thicker slab than you need and cut the excess away with the void blend.

[zanzibarbob7]

I'm fairly new to Revit and have not yet used the void blend tool. I will attempt your method today. Thank you for the suggestion.

[jcoe]

I had a similar question some time ago. You may find this thread helpful:

http://forums.augi.com/showthread.ph...ht=slope+drain.

If for some reason the link does not work use the search tool and type in "slope to drain."

[zanzibarbob7]

Beegee,

I,m sure your solution is simple and elegant, and I thought I had a handle on it, but after several hours of frustration I am at a standstill. Here's what I have done:

Constructed a floor 3' thick, just to have a thick floor to to see any changes.
Placed round opening in center>then to model tab>create>floors in Family Category and Parameters.

Void Form> Void Blend>set depth to -2'>select drain hole>Edit top>Depth to 0,0>lines>select edge of floor>finish sketch>receive error (Can't create blend).

I have looked at the selections in elevation and the drain selection always remains on the level one regardless of the numbers I assign to it.

What am I doing wrong??

[beegee]

Have you set the work plane to the appropriate position before making the blend ?

[zanzibarbob7]

I tried that. Set to level one and since it's a floor used a negative number for the base(drain hole) and 0 for the top, which, are the slab edges. Still get the same error!!

[beegee]

Can you post a file - just the slab and void , for one of us to look at ?