Display full version of the post: Inflated dims

AmarARCH
30.10.2012, 22:32


I posted something like this a while back, but no resolution was achieved. It's surfaced again.. uggh.... Cracking a new Site Details sheet. I start a DIMLINEAR snapping to items within my viewport of my very first detail, the measurement reading is much larger than the object's actual dimension should be. For giggles, I tried to dimension what I know is an 8" CMU wall, but it's showing me a 32'-0" dimension string. I can do DISTANCE, and it'll give me the correct dimension. So, I drew a 10" line in paper space, DIMLINEAR to check it and it gave me a 10" dimension string. My LTS is set at 1 on the sheet I'm working in; my LTS is set at 1 on the site plan I'm Xrefing. My paper space viewport is set at 1/4"=1'-0". My dimension style is PS-48 (what our firm always uses for 1/4" viewports). Throw some setting questions at me to make sure I'm on the up & up, but I can't think of anything else that would so bizzarely tweak my dims like this. What am I missing?

heinsite
31.10.2012, 06:06
So your 8" line becomes 32'... or exactly 48 times larger.  And the viewport scale you're working in is 1/4" = 1'-0"... which (in old school language) represents a scale factor of 48. 
 
The computer seems to be doing exactly what it's supposed to do.  Go look at that DIMSTYLE again.
 
Dave

DBARN
31.10.2012, 17:18


Type D, then select your dim style, then select Modify, under Primary Units Tab under Measurement scale type 48 for your scale factor. Hope not to offend, its the 25 years of teaching CAD in me... 

AmarARCH
31.10.2012, 18:46




Dave, doing that.. trying to sniff out the inconsistency that's killin me. I'll see if my model space (A-48) dimstyle will let me get my job done instead. I prefer to have it all in paper space, especially if I do a blowup of a blowup. DBARN, the scale factor of my dimstyle is already 48, but good looking out. That was the first thing I looked at before going to the pros on CADForum. Remember, you can't offend anyone by offering advice: if I didn't want it, I wouldn't ask for it. 

AmarARCH2012-10-31 18:49:55

heinsite
01.11.2012, 03:34
I've had too busy a day to get back to this but I want to look at it at home tonite.  Before I do I want to make sure of a couple of things:
 
1.  You are doing your dimensions in paper space, not in the model *thru* an activated viewport, correct?  And,
 
2.  The model is drawn to full scale (I am assuming in Arch units - inches) and the viewport scale you are working on is 1/4" = 1'-0"
 
Also, and not that it will make a difference, but it might be helpful to know, is your DIMSTYLE annotative or not?
 
With some of these assumptions I'll mess with this and see what else to suggest.
 
Dave.

heinsite
01.11.2012, 06:45





Ok, here's what I suspect might be happening:  Is there a scale factor of 48 assigned in the Measurement scale on the Primary Units tab of that PS-48 dimstyle?  The box that says "Apply to layout dimensions only" may also be checked.  But even if it isn't you will probably still see the same thing.  If you change the 48 back to 1 you're dim values should correct themselves.The Measure command will always give the real length, and that's true if you draw a 10" line in paper space and measure it, or if you measure an 8" line on the model in paper space.  The viewport scale factor doesn't have any effect on the Measure tool.I always use annotative dimension styles now and have a set of them configured in my basic template files for Civil work (Decimal-Feet) and for Architectural (Architectural-Inches).  In all cases the Measurement Scale setting is 1.  And with annotative scaling DIMSCALE=0.  These two styles, and their children styles, are all I really need.  They work with everything.  And I do all my plotting from paper space layouts.If none of this is helping we may need to know a little more about that DIMSTYLE for PS-48.Attached is a little example I put together that might help a little more.  Both viewports in this example have a scale of 1/4" = 1'-0".Dave. uploads/20121101_071744_dimstyles.pdf






heinsite2012-11-01 07:19:16

AmarARCH
01.11.2012, 13:48



Got it! Yeah, I changed the Measurement Scale/ Scale Factor to 1.00 and my first dim in paper space was a success. Thanks a lot, Dave!
 Oh, and thanks for the example, yes, that's exactly what was happenning with my dwg. Thanks!!AmarARCH2012-11-01 13:50:18

heinsite
01.11.2012, 18:51
Great!  Glad this wasn't any more more painful than it was.
 
Someone changed that setting for a special purpose most likely, but the majority of the time you will get by just fine leaving it set = 1. 
 
Dave.