Applies To
	Product(s):	STAAD.Pro
	Version(s):	ALL
	Environment:	ALL
	Area:	General Solutions
	Subarea:	Configuration Settings
	Original Author:	Abhisek Mandal, Bentley Technical Support Group

May I know how to convert a 3d space analysis to 2d analysis?

You can do it from the input editor. Please open the input editor file and change the first line from STAAD SPACE to STAAD PLANE. Refer the attached pdf to know more about it.