Strange Sheet Layout Results - Scale Differences Traced to Sheet Unit Setting in Model Properties

We have a number of different size sheets defined in our customsheets.def file but only use ANSI A and ANSI D almost exclusively with ANSI D the most common.

We created these in their DGN files following a practice that originated way back in the days of IGDS. The working units are set to match our normal design models - US Survey Feet as MU and US Survey Inches as SU. We actually draw the graphics for the sheets using MU values, so 8 1/2 X 11 are draw 8 1/2 feet by 11 feet and 22 X 34 is drawn 22' X 34'. Our units, scales and sheetsizes.def files are setup to accommodate those graphics settings, so for us, 50 scale is not 1:600, but is simply 1:50.

When sheet models became available, we started making the model that contained the border graphics sheet models with their sheet layout aligned to their cut lines. This went without a hitch on all of our ANSI D sheet files. We never got around to doing the same thing for our ANSI A sheet files, until today. But when I tried to do exactly the same thing I did in our ANSI D files, the sheet layouts were coming in too small. I found I had to change the scale from 1:1 to 1:12. I looked at all the settings I could think of and was pretty stumped, until I finally spotted a sheet model setting called Sheet Unit. In the ANSI D sheet models, the Sheet Unit matches the Working Units MU. But on my ANSI A sized sheet models, the Sheet Units are inches.

Why are these different and where can I modify them so they are not different. The Sheet Unit is grayed out on the model properties, meaning I can't edit them here.

These are the settings in the sheetsizes.def file:

# Name           Units Height Width TopMargin LeftMargin BottomMargin RightMargin UnitSystems
#Roll paper sizes.
ANSI A           ; 1  ; 8.5  ; 11  ;   0.00  ;  0.00  ;     0.00   ;    0.00     ; 1,3
ANSI A (Profile) ; 1  ; 11   ; 8.5 ;   0.00  ;  0.00  ;     0.00   ;    0.00     ; 1,3
ANSI B           ; 1  ; 11   ; 17  ;   0.00  ;  0.00  ;     0.00   ;    0.00     ; 1,3
ANSI C           ; 1  ; 17   ; 22  ;   0.00  ;  0.00  ;     0.00   ;    0.00     ; 1,3
ANSI D           ; 1  ; 22   ; 34  ;   0.00  ;  0.00  ;     0.00   ;    0.00     ; 1,3
ANSI E           ; 1  ; 34   ; 44  ;   0.00  ;  0.00  ;     0.00   ;    0.00     ; 1,3


 

  • This is clearly a result of a change to Sheetsizes.def. In V8i, we were permitted to use Feet as the units in this file but that seems to have been removed in CONNECT.

    Changes like this make the move to CONNECT overly painful! How can we be expected to move a project started in V8i into CONNECT when fundamental settings will react differently. This appears to also affect text sizes. We have users who for years have been using text sizes that appear totally different in connect and will potentially be a source of many support calls and significant retraining. 


    Charles (Chuck) Rheault
    CADD Manager

    MDOT State Highway Administration

    • MicroStation user since IGDS, InRoads user since TDP.
    • AutoCAD, Land Desktop and Civil 3D, off and on since 1996