conduits on a sloped roof

[Anonymous]

i having problem on drawing conduits on a sloped roof...... so far i have succeded in giving slope when i give different offset to a conduit i.e at the starting and the ending of  conduit.................. plz help

[CoreyDaun]

Hello and welcome to the Discussion Groups!

Have you tried drawing the Conduit in a Section or Elevation View?

[Anonymous]

S i have tried it,,,,, i have experience of 1 year in revit i have already drawn conduits in a flat roof but this is the first time i am drawing on a sloped roof.,,,,,, there is no option for giving slope to conduits while drawing, but once u change the offset of anyone of the end of the conduit then only it show slope,,,,,, but thats not the problem the roof is not having constant slope its doom shaped roof.... any thoughts

[CoreyDaun]

There will be situations in which Revit cannot accomplish what you are aiming to achieve, and this appears to be one of those cases. To satisfy the need for something like curved conduit running along a dome, you may have to model the arc of conduit as a custom Conduit Fitting Family. This is not ideal, but may be the only practical means.

[Anonymous]

how to model the arc of the conduit plz explain

[CoreyDaun]

I've not have the need to do this myself as a make-shift/jury-rigged Family, but here are the steps I think I would take:

1. Start a new Family using the "Generic Model" template (non-hosted).

2. Under 'Family Category and Parameters'...

    a.) Change the Category to "Conduit Fittings".

    b.) Change 'Round Connector Dimension' to "Use Radius".

3. Under 'Family Types'...

    a.) Create two new Length/Instance Parameters, "Nominal Diameter" & "Nominal Radius".

    b.) Set the formula for "Nominal Diameter" to = Nominal Radius * 2

4. Open the default Conduit Elbow Family in the Family Editor. Under 'Family Types', Click on "Manage..." under 'Lookup Tables'. Export the Lookup Table to some temporary location. Highlight the formula for "Fitting Outside Diameter" and hit CTRL+C to copy to clipboard.

5. Back in the first Family, go to 'Family Types'...

    a.) Click on "Manage..." under 'Lookup Tables' and import that Lookup Table.

    b.) Create a new Text Parameter named "Conduit Size Lookup", and then enter the name of the Lookup Table.

    c.) Create a new Length/Instance Parameter, "Fitting Outside Diameter". Paste the copied text into the formula field.

6. In the "Ref. Level" View, create the Sweep Extrusion.

    a.) Draw the Sketch Path in the arc shape that matches the slope/curve of the surface in the Project.

    b.) Create the circular Profile and constrain the diameter to the "Fitting Outside Diameter" Parameter.

    c.) Finish the Sweep Extrusion.

7. Select the Sweep Extrusion and set it's V/G Overrides to show it in Coarse and Medium Detail Levels.

8. Create a Model Line along the center of the Extrusion, set it's V/G Override to show it in Fine Detail Level.

9. Add a Conduit Connector to both ends, placing the first one at the end with the Reference Planes.

10. Select the Conduit Connectors and under Properties, link the Radius with the "Nominal Radius" Parameter.

Don't hesisate to post any questions or comments.

[Alfredo_Medina]

How are the conduits supposed to be placed on a dome? As parallels, as meridians, around the dome in a spiral? On what workplane?

[Anonymous]

thanx for posting the procedure will try and let u know

[Anonymous]

no buddy its not working, i think revit people have to do something about this......... as far as i have tried there is only one solutiion to this i.e, draw conduit as it is without giving slope and then add them to an assembly by using CREAT ASSEMBLY the rotate to required slope or degree.

[Alfredo_Medina]

Can you post an image or sketch of how the counduits are supposed to be installed on a dome? See post # 7 above. Most likely it is not possible with the conduit tool, but it would be good to SEE how the conduits are supposed to be.

[Anonymous]

i cant post the images of the projects i am working, its against the company policies........ as far as the conduits there are three different conduits with different offsets in the same roof, nt parallel....... leave a doom shaped roof, its very difficult even in the curved roof,...... but i have some ideas, if there are any good modders of revit, i will share it here if anybody interested.

[Alfredo_Medina]

Well, I was asking for some sketch or illustration, not necessarily your project. Conduit, pipe, and duct in Revit need a workplane. What would be the workplane in this dome? It's hard to provide any help about some conduits that are supposed to follow a curve on a dome that nobody can see.

[MicG]

Even though I'm not sure how your result should look like 😉 I would have one suggestion that you draw your conduit parts in top view. Then go to a section and use "align" to adjust the slope to the roof for each single part. Then connect the different straight pieces.

Depending on the result you would expect it could also help to connect the different pieces by using "ignore slope for connection". This will connect two single pieces with a direct connection and works perfectly for conduits.

It would be helpful to get the requested sketch of what is your expectation to give you a better advise.

[Anonymous]

i am doing the same procedure from beginning but its very tedious ..... is there any way to draw conduits on areferance plane rather than on level..... here are some of the screenshots

[MicG]

I'm afraid there is no chance to relate a conduit on anything else than a level.