phasing

[georgehobel]

Could somebody explain the use of phasing to me in revit... The term was recently brought to my attention, and I've never used it.  Most of my designing lately has been remodeling of existing structures.  So, I first draw the as built structures, then I remodel them in Revit.  Currently, when i remodel a model, the as built goes away.  How does drawing in phases help me with this?

[Sahay_R]

Revit can be set to differentiate between Existing and New Construction - especially helpful for remodeling jobs. You can also add further phases, depending upon the construction sequencing.

Manage>>Phases

1) You can set up the sequence of phases - existing, first, second, third, etc lots of construction

2) You can tell Revit what exactly to show you in each phase - all, this phase only, etc

3) You can set the display. For instance, Demolished items are bold red hidden lines, Existing is halftoned, and New Construction is full toned.

4) You can assign views and construction elements to a particular phase

5) You can tell Existing objects that they will be demolished, as the case may be

[ToanDN · Accepted solution]

Basic principle for a two-phase project (existing and new construction):

- Create all existing elements under Existing Phase

- Demolish applicable existing elements under New Construction Phase by changing value for Phase Demolished of those elements, NOT physically deleting them.

- Create all new elements under New Construction Phase

https://knowledge.autodesk.com/support/revit-products/learn-explore/caas/CloudHelp/cloudhelp/2015/EN...

[georgehobel]

so I can draw an object, and then assign its phase.... sort of like drawing in AutoCAD and then re-assigning that item to a certain layer..

I can also choose which layers are visible to me at any given time....

[cbcarch]

A key to this is to also be aware of Phase Filter settings in your Views/View Templates--

Show Previous/New

Show Existing

Show New

Show Complete

Show All

Show Previous/Demo

etc.

Another tip is look at Manage Tab>Phases

Graphic Overrides Tab sets global control over how existing elements read ( like gray)

Demo ( dashed)

New ( black) etc.

[georgehobel]

Thanks Cliff... I'll tackle graphics tomorrow.

Eveybody's responses are very helpful.  These little nudges help me over the hurdles towards the finish line. 

[Sahay_R]

It's just a way to organize objects by construction sequence. So your Phase 1 views will show you existing and Phase 1 new construction, Phase 2 views will show you existing (that will be the previous Existing + Phase 1) and Phase 2, etc etc. Demo views will show objects that are being demolished very very clearly since they are in bold hidden lines.

[georgehobel]

I am working on an old project that I did several years ago in pencil.  Re-creating it now in Revit, and figured it was a good opportunity to learn some new things.  This is a great tool.

[bimscape]

Video Tutorial: Introduction to Phases in Revit

Hope this helps?

[georgehobel]

Thanks Ian. I went to your site yesterday, but could not remember my password. Then i got busy with something else.

[georgehobel]

OK.. so I've phased my walls into new construction and existing.  I can toggle the settings and see the changes.  Then I start tagging items for demolition the same way I had earlier tagged walls for new construction...and...they disappeared.  I dont know where they went, and I cant seem to find them.  Gone missing are a commode, a vanity cabinet with lavatory, and a full size tub.  If they pop on anyone's drawing, please return.

[bimscape]

If you use the "Big Mallet" on them (on the Modify menu) then you are setting their "Phase Demolished" property to the current Phase (as associated with the View you are working in at the time)

Long-winded way of saying- you "tag them for demolition" and they disappear from that view because they've been demolished. Switch to any view which is set to a Phase BEFORE the one you demolished them in, and you'll see the walls.