RevitCity.com Logo

Home  |  Forums  |  Downloads  |  Gallery  |  News & Articles  |  Resources  |  Jobs  |  FAQ  |  SearchSearch  |  Join  |  LoginLogin

Welcome !

227 Users Online (95 Members): Show Users Online - Most ever was 626 - Mon, Jan 12, 2015 at 2:00:17 PM

 

Forums

Forums >> Revit Building >> Technical Support >> Dimension String Doesn't Equal Overall Dimension

Search this ThreadSearch this Thread | Page 1 of 1 |

Sun, Jun 29, 2008 at 6:08:43 AM | Dimension String Doesn't Equal Overall Dimension

#1

salarch2


active

Joined: Fri, Dec 2, 2005
21 Posts
2 Stars: 4 Votes


I've searched this problem but didn't seem to find a solution.  I have run into a big problem with dimensions in Revit that I hope is just something I'm missing.  I am using Revit 2009.  When I run a string of dimensions across a building, it doesn't always add up to the Dimension shown on the total dimension Length.  When it is off, It is generally off by whatever the dimension threshold is set for.  1" threashold when it is off is usually off 1".  1/8" off 1/8".

 I know it has to do with the rounding off in Revit but I would think the program should be able to determine the correct total.  It may not sound like a big deal but it is a big deal when the contractor adds it up and tells you there is a discrepancy.

Please let me know how anyone has resolved this problem.


This user is offline

 

Mon, Jun 30, 2008 at 2:41:33 PM | Dimension String Doesn't Equal Overall Dimension

#2

rkitect


active
rkitect Avatar

Joined: Thu, Dec 16, 2004
792 Posts
4 Stars: 29 Votes


The resolution here is to be sure you have your tolerances set to 1/256 and have everything dimensions to the exact dimension they should be.  Somewhere something has been moved by just enough of a fraction to make Revit have to round, and it usually rounds in the wrong direction, unfortunately.  I have only seen one instance where setting the tolerances to 1/256" and haveing everything dimensioned exactly as it should did not work and that was a calculation error on the engineers part (yes, they aren't as perfect as they think they are Xp).

 

My recommendation for you is to make your dimension type have a tolerance of 1/256" and see where the nudge has happened.  Fix that and your dimension will read correctly.


-----------------------------------

-//------------------------

Carl - rkitecsure[at]gmail.com

Need help? I'm probably in my chat room!

You fell victim to one of the classic blunders. The most famous is never get involved in a land war in asia, but only slightly less well known is this! Never go in against a Sicilian when death is on the line!

This user is offline

View Website

Tue, Jul 1, 2008 at 7:39:15 PM | Dimension String Doesn't Equal Overall Dimension

#3

salarch2


active

Joined: Fri, Dec 2, 2005
21 Posts
2 Stars: 4 Votes


Thanks.  I know the problem happens because some are rounded up and some are rounded down.  Are you suggesting keeping the tolerance set to 1/256.  That would give you some pretty "ugly" dimension numbers.  We generally use 1/8" tolerance.

Anyone else come across this problem? 


This user is offline

 

Tue, Jul 1, 2008 at 8:46:39 PM | Dimension String Doesn't Equal Overall Dimension

#4

lunchtrayrider


active

Joined: Mon, Jun 25, 2007
592 Posts
3.5 Stars: 7 Votes


Honestly the best way to solve this problem is to just draw exactly what it is supposed to be and not accept any sort of wrong dimensions. Lots of times this is caused by putting in a wall, dimensioning to it, and then using the move command based on what the dimension says (and since your using 1/8" tolerance it could be off). the best practice method is to type in the temporary dimensions to set the wall at exactly what it is supposed to be. Also, a couple of easy ways to check dimensions is to click on what the dimension is dimensioning so it turns into a temporary dimension. then click on the blue text of the dimension and see if it is giving you a crazy fraction. if it does, correct it. the other way to check is to simply click on the dimension so that it is selected. then go to the element properties dialog box. for dimensions you'll notice that there is a field called value. it is grayed out so you can't change it here but you can see what the true unrounded value of the dimension is.

 

semi-edited for bad grammer, horrible typing, and other general lazyness. 



Edited on: Tue, Jul 1, 2008 at 3:48:33 PM

-----------------------------------
I like scooters. and motorcycles.

This user is offline

 

Wed, May 27, 2009 at 7:33:49 PM | Dimension String Doesn't Equal Overall Dimension

#5

RLAKES


active

Joined: Thu, Jun 14, 2007
31 Posts
No Rating


Attached is an example of how the error accumulates (the same thing could be done to show how 1/8" rounding can go wrong).  The reason this has piqued my interest is that I heard that AutoCAD has to ability to round the dimensions within a single string in an alternating way so that the overall ends up the same as the sum of the smaller stringed dimensions. 

Instead of always rounding up, I'd be nice if it also rounds down sometimes to balance out the total.



This user is offline

 

Search this ThreadSearch this Thread | Page 1 of 1 |



Similar Threads

Thread/Thread Starter

Forum

Last Post

Replies

Dimension strings not adding up to the total length dimension string (2017)

Revit Building >> Technical Support

Fri, Mar 23, 2018 at 6:33:58 AM

1

Adding a dimension to a dimension string...

Revit Building >> Technical Support

Wed, Jul 10, 2013 at 8:42:09 PM

1

dimension string problem

Revit Building >> Technical Support

Thu, Oct 18, 2007 at 6:21:31 AM

2

partially obscurred dimension string

Revit Building >> Technical Support

Mon, Oct 29, 2007 at 3:45:13 PM

8

Removing/editing single dimension in dimension string

Revit Building >> Technical Support

Wed, Aug 26, 2009 at 12:12:02 PM

3

Site Stats

Members:

1459002

Objects:

20592

Forum Posts:

150670

Job Listings:

6

Sponsored Ads

Home | Forums | Downloads | Gallery | News & Articles | Resources | Jobs | Search | Advertise | About RevitCity.com | Link To Us | Site Map | Member List | Firm List | Contact Us

Copyright 2003-2010 Pierced Media LC, a design company. All Rights Reserved.

Page generation time: 0.7757

Login

User Name:

Password:

Remember Me  

Forgot Password?

Search Forums

Advanced Search

Search Forums

Advanced Search


Clear Highlights


Clear Highlights