Revit 6.0 project units ?

[Nic M.]

We use MM as our standard project unit and a zero rounding of decimal places.
In this new release I noticed, I llways have a rounding of 1 decimal place, even though the setting in the diaog box is zero (0) decimal places.
If i change the standard project unit to cm and decimal rounding to zero, I select an element I get a number with two decimal places.

Is this only me or did I find the first s*xbug :shock:

[Gerhard]

There is a change in the behaviour with R6.
But as I can see only for the temporary dimensions.
They show, contrary to before with 2 decimal places (no rounding).
Once you change them to dimensions they show correct.
Also dimension normal applied show correct by me

Gerhard

[Nic M.]

Indeed dimensions show correct
But element properties of families show all units with one zero behind the dot
element properties of dimensions show 4 units behind the dot

It's notting critical to me but it's annoying to have to look at.
If I set the dialog box to zero decimal places, I want zero decimal places.

[David Conant]

The reason that temporary dimensions, and properties are shown with full precision is to help eliminate cumulative roundoff errors. Without that behavior, it would be more difficult to detect when a dimension represents the actual dimension and when it represents a rounded off dimension. I know from real world experience that those errors can add up to a significant figure when accumulated across a large number of continuous dimensions. That can result in real construction problems and cost increases.

[Archman]

The reason that temporary dimensions, and properties are shown with full precision is to help eliminate cumulative roundoff errors. Without that behavior, it would be more difficult to detect when a dimension represents the actual dimension and when it represents a rounded off dimension. I know from real world experience that those errors can add up to a significant figure when accumulated across a large number of continuous dimensions. That can result in real construction problems and cost increases.

Makes sense to me!

[Nic M.]

David,

Thanks for the respons.
I see your point and I have experienced it in real more than once.
I dont understand however it's no longer a user difinable option.

My windows families have a shared parameter for an id number of the window. The shared parameter is set as "number". If I look in windows properties, the default number for this parameteris 0.000000 :shock:
Speaking of precision.
We do look at many number during a days work so I want to display them as clear as possible. Also to avoid errors.

I also don't understand the need for this kind of precision when for instance setting up a new dimension. A text offset value of 0.2 is the same as 0.2000. Only in my opinion the first reads more easely.

Still very. very very very very happy with rel 6.0 :wink: