Room Tag Width x Depth Parameters generating question mark

[rstewart]

At the following Revit support link there are instructions on how to use calculated values to set up the room tag to publish the calculated width and depth of a room based on the room's perimeter and area: Revit 2017: How to create Room tag including Width x Depth parameters.  However, if the room is square and has width and depth values in the range of 11'-11 7/8" x 11'-11 7/8" up to 12'-11 3/4" x 12'-11 3/4" it will generate a question mark.  Any suggestions on how to resolve this dilemma.  Thanks!

[cbcarch]

As a quick test:

Try changing Project Units-Length Format-Rounding and Area Rounding--

Does Tag report dimensions?

[rstewart]

Thank you for your response.  I have tried to change the unit rounding to different options in both the project file and the room tag file but with no better result.  Any other ideas?

[rstewart]

I am finding that it occurs with other square dimensions even outside of the 11 - 12' range.  I had previously set this calculated value with a roundup formula, and it worked fine but it would only give whole number output.  I was wanting to get the full feet and fractional inches readout rounded to the nearest inch.

[ToanDN · Accepted solution]

Use the formula below for Room Length:

if(Area = (Perimeter / 4) ^ 2, Perimeter / 4, ((Perimeter / 2) - sqrt((Perimeter / 2) ^ 2 - 4 * Area)) / 2)

[rstewart]

Thank you!  Works like a charm.

[Anonymous]

Very helpful, thank you.

My floor plan displays the smallest length by the largest length, which causes inconsistency throughout the floor plan. Sometimes display length x width, other times width by length.

Do you know if there a way to get around this?

[Anonymous]

does anyone know how to create the room tag to display width and depth, i tried clicking on the link and the site cant be found

[ToanDN]

See post 5.

[Anonymous]

Yes I saw that but I don’t get it. Where do I put that information in? Do I make a parameter of area? Why wouldn’t it be length?

[Anonymous]

How do I begin?  Where do I begin?  The link does not work, so i do not know how to even start 

[ml]

I know this is an old topic but I was having similar frustrations attempting to schedule the width and length of the longest part of a room.

In case its of help i had created a dimension family which will report the width and length of a room and display in a schedule. This was the only way i could figure out how to solve this issue as you can easily schedule a component within revit.

Its a dynamic family which allows you to drag the points to the face of the walls with the dimensions reporting the length of each line.

The family is set as a specialty equipment though this can be changed. 

you then set up a specialty equipment schedule to report the dimensions family within the room and room area. 

Hopefully that's helpful for someone or provides a starting point for your own set up. 

Cheers

Mark

[bnutkins]

Sorry if this seems dumb but where do you type the "if" statement? i am trying to create a room tag as you have shown.

[ToanDN]

Only if you use Revit 2017 or newer -edit or add a label in the Tag family, add a Calculated value label from the button with # symbol, and type the formula in the formula box of that label.

[Anonymous]

Dear sir,

i have seen the formula you have given and i dont know how to apply this and where in which settings . 

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@ToanDN wrote:

Use the formula below for Room Length:

if(Area = (Perimeter / 4) ^ 2, Perimeter / 4, ((Perimeter / 2) - sqrt((Perimeter / 2) ^ 2 - 4 * Area)) / 2)

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@ToanDN wrote:

Use the formula below for Room Length:

if(Area = (Perimeter / 4) ^ 2, Perimeter / 4, ((Perimeter / 2) - sqrt((Perimeter / 2) ^ 2 - 4 * Area)) / 2)

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[ToanDN]

Read the post above yours. It tells you where to use the formula.

[jeromemaceachern3284]

Open--> Family--> Locate Room tags in annotations folder.

Create tab, click Label. click Fx (formula) button. Call the Value Length, change type to length and enter the formula 

if(Area = (Perimeter / 4) ^ 2, Perimeter / 4, ((Perimeter / 2) - sqrt((Perimeter / 2) ^ 2 - 4 * Area)) / 2)

Hit ok. 

Now click Fx (formula) button again . Call the Value Width, change type to length and enter the formula 

Area / Length

Hit ok.

You can add a "x" for the prefix in the width line. 

Hit Ok. Save Tag family and Load it into your project.

[Anonymous]

Where do you find the "Fx" button please? 

[ToanDN]

What version you are using?
Add or edit a label of the Room tag and you will see the fx button to add a calculated parameter.

[BGTREKER]

Thanks for the fine explanation!

Is there a way to limit dimensions to whole inches?

77' - 6" vs. 77' - 6 153/256"

Thanks in advance!