Start the Model / Design floor elevation at 100.00

[TedLink]

Would it be possible to get most designers to start the design floor elevation at 100.00 so we don’t start off with any negative elevations ? This seems like common sense and best practices. Thank you.

[tedg]

Would it be possible to get most designers to start the design floor elevation at 100.00 so we don’t start off with any negative elevations ? This seems like common sense and best practices. Thank you.

Is that a question for the place you work? (this is the AUGIWorld Feedback thread)

You can implement that and set up your templates and/or design standards for your shop.
For us it depends on the required project/datum. Sometimes we need to tie into an assigned datum, others we don't.

But yes, if we have a choice we start our FFE (top of base floor slab etc) at 100'-0", so things like bottom of footings are 96'-0" (not negative numbers).
For this we typically have a note linking our FFE @ 100'-00" = Civil-Site Datum of XX.XX' (for the reader to understand the relationship)

[CAtDiva]

I moved this thread to "CAD Standards" as that seems the most related sub-forum.

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On topic: While I agree that a base elevation of 100'-0" is a good idea (and an industry standard in many places), there are times when an alternative is reasonable.

If you are encountering something different with specific designers, you might ask them what is their reasoning for their choice.

If they are using Revit, it might be as simple as they are using an OOTB template that has the first floor set to 0'-0". One of the first things I do when creating a new Revit template from scratch is move the base level up to 100'-0".

Alternately, they might be closer to sea level where it makes sense to use the actual elevation.

Or they might have a different reason altogether.