Fix how?

In my hometown, here in the U.S., we use a 4 and 40 scale.  That is to say 1"=4' in the vertical profile portion of the sheet while 1"=40' is used in the plan view portion of the drawing.

I see you live in Pakistan.  What is the typical plan/profile scale used there or are you working on a project that is out of country?

Hi,ohn Connor.1) I check in format drop down window scale list and that is for layout describing paper unit as to model unit.even then i could not understand it.

2) What is exectly meant by REVIT in cad language?Generaly in mechanical tech.Revit is type of bolt or nail to join two plates but what it mean here.

Hi Mr.John Connor.

Thanks for attention,I treid and seccessfuly done th job,I did not touch the H scale while for elevation I do 1=10 and plot the required profile.It ok now.I know about the model space and layout space.Secondly I asked about Revit just for information.

Thank you again and again.I may get in touch in future if be in a trouble.

Viewports in a layout are like windows that allow a user to see what was created back in model space.

The primary reason for using a paper space layout and viewports is to be able to incorporate different portions of a drawing at different scales.  It is the viewport that a scale is assign to and not the objects themselves.  All objects drawn in model space are done so to their real world dimensions whether you are drawing something as small as a paperclip or as large as the Eiffel Tower.  AutoCAD doesn't care.  It will expand infinitely to accommodate even the largest objects you can think of.

Two things that are important when using viewports.

1) Viewports should have their own layer and that layer should be set to "no plot".

2) Once a scale has been assigned to a viewport and the view of your objects is exactly as you want them to appear the viewport's display should be locked.  This will prevent the viewport scale from being accidentally changed should you enter model space from within your layout and zoom or pan.