Revit MEP

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Valued Contributor
SLDBrown
Posts: 51
Registered: ‎08-19-2005
Message 1 of 5 (216 Views)
Accepted Solution

Ductwork under a slab

216 Views, 4 Replies
01-27-2014 02:25 PM

Hello,

I am routing ductwork under a concrete slab. I need to make the linework represent itself as hidden. The slab is a linked Architectural Item. My discipline is set to Mechanical. The segment of duct I need to show as hidden is circled in blue.

 

Is this possible? See attached....

1. Make sure your view range Bottom is 0 and your view depth looks down below the floor.

2. In Manage-->Additional setting-->Linestyles, change <Beyond> to a dashed linestyle.

This is a global effect. Any element that is below the Bottom view range will show as the linestyle you have assigned to <Beyond>.

You may discover when using the suggested method that none or some of your annotation elements present in the view depth range will be visible. This is because annotation symbolic elements outside of the normal view range are intentonally suppressed. If that did not happen by design then you would have to deal with annotation from other floor levels bleeding into the view. You do have a number of other options available. One method is to use a plan region. Another method is to relegate the under slab elements to their own workspace. Workspaces have a "one checkbox" visibility interface in the Visibility Graphics dialog. That is the unsung power of workspaces, a direct result of how poorly conceived the VG dialog is. You would then create two independent views. One would be the normal view with the under slab workspace not shown and the other would be a similar view with everything but the under slab workspace turned off. Everything means everything. In this "only the under slab view" you VG override to suit how it should look. Being independent that VG setting does not affect any other view. In the normal view by the way the structural and architectural elements would be set to overlay as they have traditionaly always been. The trick involved here is to place both views on your sheet one right over the other. Green alignment lines show up when placing the second view to let you know they are perfectly aligned. Pin them when you are done. Select the under slab view and set its view properties to not have a view title. This basic sheet composition technique allows one to achieve graphic results not possible with standard Revit views. It may accommodate for unforeseen graphical flexibility.
Distinguished Mentor
Jrobker
Posts: 532
Registered: ‎09-29-2008
Message 2 of 5 (210 Views)

Re: Ductwork under a slab

01-27-2014 02:57 PM in reply to: SLDBrown

1. Make sure your view range Bottom is 0 and your view depth looks down below the floor.

2. In Manage-->Additional setting-->Linestyles, change <Beyond> to a dashed linestyle.

This is a global effect. Any element that is below the Bottom view range will show as the linestyle you have assigned to <Beyond>.

"It's hardware that makes a machine fast. It's software that makes a fast machine slow."

Valued Contributor
aksaks
Posts: 93
Registered: ‎03-23-2009
Message 3 of 5 (183 Views)

Re: Ductwork under a slab

01-27-2014 09:13 PM in reply to: Jrobker
You may discover when using the suggested method that none or some of your annotation elements present in the view depth range will be visible. This is because annotation symbolic elements outside of the normal view range are intentonally suppressed. If that did not happen by design then you would have to deal with annotation from other floor levels bleeding into the view. You do have a number of other options available. One method is to use a plan region. Another method is to relegate the under slab elements to their own workspace. Workspaces have a "one checkbox" visibility interface in the Visibility Graphics dialog. That is the unsung power of workspaces, a direct result of how poorly conceived the VG dialog is. You would then create two independent views. One would be the normal view with the under slab workspace not shown and the other would be a similar view with everything but the under slab workspace turned off. Everything means everything. In this "only the under slab view" you VG override to suit how it should look. Being independent that VG setting does not affect any other view. In the normal view by the way the structural and architectural elements would be set to overlay as they have traditionaly always been. The trick involved here is to place both views on your sheet one right over the other. Green alignment lines show up when placing the second view to let you know they are perfectly aligned. Pin them when you are done. Select the under slab view and set its view properties to not have a view title. This basic sheet composition technique allows one to achieve graphic results not possible with standard Revit views. It may accommodate for unforeseen graphical flexibility.
Valued Contributor
SLDBrown
Posts: 51
Registered: ‎08-19-2005
Message 4 of 5 (172 Views)

Re: Ductwork under a slab

01-28-2014 04:19 AM in reply to: Jrobker
You are awesome beyond words! Thanks!
The process is similar to AutoCAD MEP but much simpler.
Valued Contributor
SLDBrown
Posts: 51
Registered: ‎08-19-2005
Message 5 of 5 (171 Views)

Re: Ductwork under a slab

01-28-2014 04:21 AM in reply to: aksaks
If all else failed, I was going to attempt something similar to you suggestion. Thank you for your timely reply.
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