Doors Tags for Exiting Plan - How?

[guy.messick825831]

Hi all,

After searching all the great posts on code anlysis room tags, it's starting to come together. However, the other component I would like to create in order to assist in code review is a door tag that allows you to; 1. Fill out parameters in the door (or tag, or schedule) for sum of occupants for the exit & Egress Width per Occupant. 2. Have the two parameters calc to get the exit width required & 3. Show the actual door width. See attached image for an example. I realize that Revit will not allow a calculated formula in a tag - but can I have a simple "dumb" equation? or something. Head banging must stop...

[david.kingham]

Here's what I use, I know I created one at some point that was a door tag and pulled the width directly from the door but I can't seem to find it now

[greg.mcdowell]

a "simple 'dumb' equation" is still a Calculated Value... I use a schedule for this and manually insert the numbers from a calculated column to a manual one... actually i think this is a much better approach than to have Revit fill in everything for me since sometimes what the math or object says isn't what is required (i.e., an agreed upon occupancy instead of a calculated one).

[guy.messick825831]

Thanks for the help. A refreshing weekend and all is good.

[tim.101799]

What I did was to create a couple of shared parameters and add them in the door family. I also created a door tag to display this information. Below is a basic outline of what I did and the finished families as examples. You may need to tweak the formula I created based on how you door families are set up.


Shared Parameters
*I created two new shared parameters under the door heading. Both are formatted as numbers, this is important to get the formulas to work

Parameter #1: Egress Actual
Parameter #2: Egress Max Capacity


Door Tag Creation
*I opened our office standard office door tag and saved it as a new file named Door Tag Egress

*I copied the existing label so there are now two duplicate labels, one above the other.

*I edit the upper label and associate it with the new shared parameter ‘Egress Actual’

*I then edit the lower label and associate it with the new shared parameter ‘Egress Max Capacity’

*Format both labels to have no decimal places

*The save the new door tag family and load it into a test project


Door Family Modifications
*Open an existing door family, save as a test version

*Add the new shared parameter ‘Egress Actual’ and set it to be an Instance parameter

*Add the new shared parameter ‘Egress Max Capacity’ and set it to be a Type parameter

*Add the following formula to the ‘Egress Max Capacity’ parameter: (((Width / 1') * 12) - 2) / 0.2

*Save your door family and load it into a test project.


How to use
* Draw a wall and insert your newly modified door family

* Tag this door with your new Egress door tag

* The lower label in the door tag (Egress Max Capacity) should automatically calculate the maximum persons allowed to egress through that door based on the door width divided by 0.2 persons per inch. Per our office standard I subtracted 2” to represent the door panel and opposite door duck from the opening width in the formula

* The upper label in the tag (Egress Actual) is a type parameter with no forumula. You manually fill this number in based on the amount of people that will actually exit through that door per your egress diagram