topic Ghost story in Project data & BIM

Ghost story

Anonymous — Thu, 17 Jul 2025 12:46:13 GMT

I have created a second floor. I set the elevation at 0' for the First Floor and 10' for the Second Floor . In the Height to Next text box I set 10' for the First Floor and 10' for the Second Floor. In the Wall Settings dialog box I used -1' for the base. There is a small gap in the 3D model between the floors and I do not know how to close this gap. Any ideas?

Re: Ghost story

Anonymous — Thu, 28 Apr 2005 03:21:49 GMT

mikki,
There could be many reasons for this gap.
Instead of asking you a lot of questions to determine the problem,
I will suggest you do the following to achieve
what seems to be your intent.
Set the thickness of your 2nd floor floor to 1'-0", at the first story,
draw a wall exactly 9'-0" high with it's bottom set to 0'-0".
If your story to story distance is indeed 10'-0" and the two floor slab's
top surfaces are at 0'-0" relative to there home story,
there should be no gap between the top of this wall and the
2nd story floor.
Thank you,
Peter Devlin

Re: Ghost story

Anonymous — Thu, 28 Apr 2005 05:07:13 GMT

Thank you, That works although I do not understand why. What is the difference between setting the Height to Next text box at 9' or 10'?

Re: Ghost story

Djordje — Thu, 28 Apr 2005 13:12:33 GMT

mikki wrote:
I have created a second floor. I set the elevation at 0' for the First Floor and 10' for the Second Floor . In the Height to Next text box I set 10' for the First Floor and 10' for the Second Floor. In the Wall Settings dialog box I used -1' for the base. There is a small gap in the 3D model between the floors and I do not know how to close this gap. Any ideas?

Wall heights? Slab thickness? They are NOT automatically following the Height to next, have to be set manually - numerically or graphically in the 3D window.

Re: Ghost story

Anonymous — Thu, 28 Apr 2005 16:39:14 GMT

mikki,
To answer your own question,
"What is the difference between setting the Height to Next text box
at 9' or 10'?". Do an experiment. Change the "Height to Next" value
and see what happens. You will notice that the 2nd floor slab rises
or lowers relative to the 1st floor slab depending on this value.
AC needs to be told what the distance between the two floors should be.
Djordje is right. In order to have control of what you are doing,
you need to do the arithmetic. Decide what your floor to floor height
is going to be. Decide what the 2nd floor floor slab thickness is going to be,
and then calculate how high your walls must be to exactly reach
from the 1st floor slab surface to the under side of the 2nd floor slab.
Thank you,
Peter Devlin