Dimensions

[Guest eddie57]

I am dimension a drawing in architectural desktop 2. It is a house drawing and I am dimensioning the windows, walls, doors, etc. When I dimension the total of these sub-dimensions it is off by an inch or two. If I set the precision to 1/8", 1/4", 1/2" or 0" it is still off. The smaller the precision the smaller the variance. Is there a way to eliminate this variance? TIA

 

EG

[neko]

dimension precision and drawing unit precision are two different things - i'm assuming you are talking about dimension precision ?

 

one suggestion i have is to look at the 'round off' variable in your dimension style. it could be that you are forcing dimensions to round up or down and that is causing the discrepancy.

 

either that or your drawing is inaccurate ? sorry.....

 

hope that helps

 

paul

[jccloutier]

check what your 'units' precision is - type 'units'. when you 'dist' the overall length it may be telling you it's a certain distance when it's actually different. change your units to decimal with 8 places and check again.

 

also, make sure the dimension nodes aren't overlapping by zooming in to each and panning down the line.

[Guest eddie57]

Thanks for the tips guy. I am a seldom user of cad. I am drawing a house plan for a friend. I'll get back to you and to how it works out.

 

Thanks

 

Eddie

[Guest eddie57]

dimension precision and drawing unit precision are two different things - i'm assuming you are talking about dimension precision ?

 

one suggestion i have is to look at the 'round off' variable in your dimension style. it could be that you are forcing dimensions to round up or down and that is causing the discrepancy.

 

either that or your drawing is inaccurate ? sorry.....

 

hope that helps

 

paul

 

 

The drawing is in architectural units. I changed the precision ot 1/16". That seems to have helped on the variance. The "Round off" is set to "0". Is that where it should be at? Thanks again for the reply.

 

Eddie

[neko]

sounds like you have it under control.

 

drawing units (UN) control the precision only in terms of information or feedback (using the DISTANCE command for example)

 

the precision in dimensions refers to the smallest fraction that will be displayed in the dimension. round off will actually round off dimensions and change the dimension text string (i don't think you should ever use this feature)

 

if you are still having problems, email me the portion of the file and i can have a look. i might not get back to you right away though.

[Guest eddie57]

Thanks Paul. How's the weather up there? Here in Texas it was around 75 yesterday. Take care.

 

Eddie

[Hazdaz]

The Round Off should be set to 0, but something sounds screwy. If you were dimensioning a row of things (using the Continue Dim command) it shouldn't matter what the precision of the dim was set to.... it should all add up to the overall length.

 

For instance, if the first dim is actually .22" then .71" with the overall actually being .93".

 

Say you set the precision to 1/4" then the dims would come out to 1/4" then 3/4" with the overall coming in at 1".

 

If you set the precision to 1/32" then the dims would come out to 7/32" then 23/32" with the overall coming in at 15/16".

 

The math works out either way.

 

If the overall doesn't add up to the sub-dimensions, it sounds like either you weren't clicking exactly from one dim to the other dim, or the precision for the sub-dims was different than the precision of the overall dim.