Demolish tool. Is this demolish or something else??

[spitfire-s]

We have a few doors in a concrete wall that some workers will demolish on an existing building.

We have tried to use the revit demolish tool to generate updated drawings, but instead of geting a clean wall opening after removing the doors, revit insists on building a concrete wall on the same place automatically. 

It never happens on an existing building that when we remove a door, we get a wall automatically - so I cannot see the logic. It's very hard to get rid of those infills. Or, am I missing something here? Can revit stop this automatic "feature" on doors placed on the existing phase?

[Lance.Coffey]

I have not found an option to prevent the infill element from automatically filling the hole (from the demolished element).

When looking online, I found the following page suggesting that you can place a new opening in the same location:
http://revit-archcenter.blogspot.com/2008/04/demolish-door-and-keep-opening.html

If you plan to place another door in the same location, I found you can copy from the old phase and then paste into the new phase (view), changing the door type once pasted. The only issue I found with this was that the new door wasn't automatically cutting the Wall/Infill Wall, but when I nudged the door to the left (using the Left Arrow key) and then back right, it started cutting the wall (so that the infill was no longer visible).

[spitfire-s]

The tool says "demolish". Revit is doing something else than just demolish. Can't Autodesk just keep it simple and real? The door opening has to be there after the door is demolished. If a wall is built instead of the door, it's not called demolition anymore.  

[Lance.Coffey]

The opening (hole in the wall) is part of the door (within the modeling environment of Revit). If you were to simply delete the door, you would find that the door along with the opening would be gone.

In order to deal with the situation where someone wants to replace an existing door with a different item, in a later phase, the demolish tool can be used. Once the element is "demolished" a new element can be placed in the same location, or slightly different location and the opening from the new element will affect the wall.

If the new element is exactly the same size and placed in exactly the same location, then the infill element representing the "demolished" door will not be visible. However if the new element is in a slightly different location or is a slightly different size, then the infill element can fill in this area.

[spitfire-s]

I can see the difference between the modeling environment and working on a building site. When someone demolishes a component on site - it's just gone, it becomes an empty space. It does not become an automatic infill - because that is called building. Is it hard to simply demolish a door without using some special workarounds and a 5-6 step operation to remove the unnecessary infill?

[Alisder.Brown]

Look at it this way, if you were trying to do the opposite (which in alot of cases is true)

You have a large hospital that is getting rennovated, you are removing 300+ doors and they are all to be infilled and the new doors re-located on the building. would you complain that you do not have to manually model 300 walls and then edit the profiles to fit inside the opening that was there before hand and join the infill to the existing walls? 

If you wish the opening to remain, i assume you are placing a new door in its stead? Simply demolish the old door, and insert the new door = problem solved.

On site, if the new door was a different size the opening would have to be modified to suit, which is what placing the new door would be doing for you. If Revit did not do this, you would have to demolish old door, which leaves the opening, then delete/modify the opening left behind to suit the new door you are going to place. If you simply want the opening to be left and no door to be inplaced, then edif the door family that was there and make a new family/type with the grometry deleted/visibiity off and place this in its place. 

It is actually very logical as it allows you to easily replace demolished components OR infill the hole that would be left.

[spitfire-s]

It can help replace OR infill. Both operations assume that I am adding components to the building. Is that what "demolish" is meant to be?

I intend to deconstruct the doors and repair the opening. A new door is not required. I hope that the "demolish" tool would remove the door like it removes a wall, without adding anything to its place. Is that complicated?

Should I use another tool instead?

[Alisder.Brown]

Spitfire

The opening is part of the Door family, so if you demolish the door family, the opening will be demolished aswell.

If you are going to be editing the opening, surely it is much faster to load in the default "opening" family and place it where the demolished door was, saving you the need to edit the existing opening, simply adding the finished outcome is much faster.

You could if you wanted, place all your doors with a family just for openings, then add another family inside the openings as the door geometry, then when you demolish, just demolish the door geometry, leaving the opening for you to manually edit to the finished outcome (taking much longer) 

A thing to note when working in a BIM workflow, is to think ahead and plan your modeling methods. If you are going to require something to act out of the hard scripted Revit ways, then you have to work that way from early stages, making times like this, when you get to them, much more efficent and easy to accomplish.

The first method is the way i would reccomend, load in a paramatised door opening family, and when you demolish a door, place the opening to the finished size in its place on the new phase. 

Hope this helps

[teslaoutsourcingservices]

Hi, you can try in this way. Go to View Property à go to ‘Phase Filter’ à Select ‘Show Previous Phase’ from the dropdown menu of Phase Filter à now go to ‘Phase’ à select ‘New Construction’ option.

[damo3]

As alisder has explained if it wasnt this way then it would be the other and i think this is the lesser of the two evils. With the right families such as having a generic opening family (a door family with no door and change the category to generic) then the process is quite painless. When you demolish a door or more commonly a window and relocate/resize slightly you will appreciate the auto infill.

I do agree though an option to tell revit to retain the opening could potentially be useful.

[1009383]

You want to demolish an existing door from an existing wall, and under show complete phrase you would like to see  an empty place where the exg. door was.

First work on existing phrase.  Highlight the exg wall where the door is, Under modify/walls tab press Edit Profile under mode  [ModifylWalls>mode>Edit Profile].  A pink line indicating the outline of your exg wall frame will appears.  

Using the line command under draw tab and  draw lines  around the exg door frames top and the two side [modify>Draw>Line].  

Using the split element under modify tab place a dot at the bottom [where the door is] pink wall outline [modify>split element]. 

Use trim extend corner under modify and connect drawn outside of frame line  to the respective sides of the wall bottom lines [Modify>Tim]. You will be able to see the pink profile lines with a gap around the door. Hit save.

If you have set your phrasings to show complete  under new construction the door will not appear but a gap where the door was just as real wall without the door.  But under Phrase show all the door will appear in dotted line to represent exg. door that will be demolished under new construction on the existing wall. 

[ToanDN]

IMHO that is way more work than simply placing a new opening there for the same outcome.