This page describes how to set up a layout on an A1 sheet and print to a fixed scale of 1:100
Before setting up a new layout sheet, It is a good idea to make sure that a distance enquiry gives the expected result. In the example below, we have inserted a 5 meter scale bar (always a good idea). Use the Distance command to check it. There is always the possibility that entities have been inadvertently scaled without you being aware of it. The figure below shows that a correct value is given.
Zoom extents in model space
Next use the Zoom Extents option. It is surprising how often using this option throws up entities that have been wrongly placed.
Move to the view Format drop down menu and choose layout.
Create a new layout, choosing (in this example), an A1 sheet in portrait mode. It is good practice to give the layout a meaningful name as shown below.
Click OK and select the new layout. Chances are you will see a zoomed in view as shown below.
Zoom extents again
Position the viewport as required. Select the edge of the floating viewport as shown below, making sure that the properties box shows.
Set scale for frame and fix it
Click into the properties box and type 100 in the scale control.
Tip: If you activate the layout, it is not possible to resize it. You may want to temporarily take the fixed scale setting off, adjust the size of the magenta 'select' area.