Dimensioning curved gridlines

[Anonymous]

I have curved grid lines. I have been able to place a radius dimension on the innermost grid. Rather than place a radius dimension on each, I'd like to use an offset - dimensioning the space between the lines. Revit does not seem to let me do this. Am I missing something? I could understand if it's because it's curved, but the distance between the 2 is always the same, it would just have to find the perpendicular.Seems to be that "alined" dimensions should work, but I've also tried linear with no luck. 

Thanks!

[constantin.stroescu]

You can do it either dimensioning the Arc Length or the chorde using Aligned Dimensions ( in this case you have to select the intersection points using TAB)

https://screencast.autodesk.com/Main/Details/78c6207c-6c23-4392-a507-a97f84c5f432

[Anonymous]

It seems I wasn't clear enough with my question: I'd like to dimension the offset between 2 curved grid lines. Using your example, if there were a curved 'B' grid, say 5'-0" off the 'A' grid, it won't allow me to dimension from A to B. Any ideas on this?

Your example wil probably still come in useful for this project though! 

[L.Maas]

The basic problem is that when you have one or more curved lines the distance betwen the two lines will vary depending on the position of measurement. You only will have constant distances in 'rare' occassions like two circles sharing the same center point.

You will see the same behaviour when you have two straight lines which are not parallel.

[Anonymous]

I've attached an image of what I'm trying to do to clairify, the curved grid lines share a centerpoint, and are always the same distance from each other. One is simply offset a distance from the other. I want to dimension that offset. 

In the attached: Grid line 'C' has a radius of 73'-11" from the center point. Grid line 'B.9' has a radius of 78'-11" from the same center point. I simply want a dimension of 5'-0" between them at a perpendicular - which 2 concentric circles have, in the spot I marked red, but Revit won't let me do that.

[constantin.stroescu]

There is indeed a problem with Aligned Dimensions at grids and reference planes intersection points- it seems, who knows why, that in this case did not work.

But:

1. for horizontal and vertical can be used the  Linear Dimension to snap points
2. for other angles, a workaround can be done : draw a Detail Line or Model Line ( using SP - Snap Perpendicular to the second arc) , these lines allow Aligned Dimensions to snaping points ...Then, make invisible that line using a Filter of color...as shown in my screencast...

https://screencast.autodesk.com/Main/Details/b606d257-1d67-417b-8f8d-fdd1d704efea

[arunag]

That was a good suggestion by Constantin . I have used reference planes instead of detail lines at the end of the grids to dimension the offset. As reference planes can be excluded from printing the filter step can be avoided. 

[constantin.stroescu]

STRANGE!

On my office computer both in 2015 and 2014 versions of Revit , Aligned Dimensions can be easy displayed by selecting snaping points.

I think there were some updates that solved the problem...

https://screencast.autodesk.com/main/details/b6c42a56-e7b7-4254-8e7e-b0a84b00cc56

[0323170020]

i have the same problem, about dimensioning and griding curved plan

[arq_42]

Draw a pair of short detail lines, tangent to the curved grids, and then dimension that pair of lines