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Here is the deal. I want to use a room tag to calculate my occupants based on the area of the room divided by the occupant load factor. The room area would be pulled from the room, the occupant load factor (OLF) would be manually input by the user. Once the OLF was input a formula would take over and give the number of occupants. Is this possible? I know it can be done in a schedule but I would like to put it into a tag for a code study. Eventually this tag could be expanded to provide other information such as required exit width from the room. The possibilities are endless. I just need a lttle help figuring out the way formulas work in tags. Any takers?
Doing it in a tag is possible, although a severe pain. The methodology of a schedule based system takes a lot less user imput, especially if a key schedule is set up to match the code bases room use groups. Then one room "code type" is placed in the room, and all other calculations come out.
The issue then becomes one of rounding as Revit may round all the numbers up (when you might want to want a select few OLC's to be rounded down) in order to maintain a certain code functionality. I've run into this exact issue at my previous employer's office, and the issue was worked around after I left. But the comment of making a schedule to show the building's occupancy loads based on SF's is (in my opinion) the easiest solution.
Rounding Down
To return the next lower integer, one-half can be subtracted, because
subtracting one-half from an integer and then rounding, results in the
integer. Therefore, the calculation formula would be:
Round (Number - .5, 0)
michael_fett wrote:
> Ok, so I figured out how to get rid of the SF suffix. Any ideas on how to round down?
I'm trying to make the same type of tag. How did you get the tag to read the room area and then make that available to use as a parameter in the family?
Has anyone come up with a methodology to create a tag that shows the occupant load of a room without having to manually add the number? I have the schedule that generates the values and I've got it to round up to a whole number, but I cannot find a way to push this number to the tag on the plan without manually inputting the result into the parameter.
anybody ... ?
Ian Shafer
GHMA
Ian Shafer Graham Hoffart Mathiasen Architects Surrey, BC
It is my understanding that formula parameters cannot appear in tags, just like non-shared parameters cannot appear in tags. I have heard of a third party software that allows this to happen. If I can find it I will post it. Typically we provide a room schedule on the life safety plans that has the use, occupant load factor, area and occupant load for each room. It is a pain to go back and forth betweent he schedule and plans but beat manually inputing info and having the potential for something to be missed.
The only way I know to change it is to change the project units to remove the SF however this will remove the SF from all annotation using the default project units. See attached.
