I did not do anything special on layout 2, just changed the viewport size from 0.434mm high x 0.546mm wide to 540mm high x 800mm wide, then set the viewport scale to 1:500.
I did run an audit on your drawing and there were 526 errors found.
To fix the issue with Layout 1 in your drawing, I deleted the the layout, made a new one and created a new viewport.
I have encountered this issue before, but don't recall what the solution was.
I did figure a method to fix the viewport in layout 1.
- go to Layout 2
- double click into the viewport
- create a named view -
- click on the view tab of the ribbon
- click the New View button on the Views panel
- type in a name and click ok
- go to Layout 1
- double click into the viewport
- set the named view current you just saved
- click the views pull down on the Views panel of the view tab of the ribbon
- select the named view you just saved
This should set the viewport scale to something other than "Fit to Scale" which it is stuck on for some reason.
You should then be able to set the scale to anything you want.
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Andrew Puller
Maitland, NSW, Australia
Windows 11
Intel core i7 11800 @ 2.30 GHz with 32GB Ram
Civil 3d 2023