I was wondering what type of conduit would be used in a commercial application where the conduit was traveling in both indoor and outdoor areas including rooftops.  I am deciding between Rigid Metallic Conduit and Intermediate Metallic Conduit.  
Can anyone provide any insight on which conduit is more suitalbe for a commercial application and advantages/disadvantages to using either type?
Thanks
	
		
			
		
		
	
				
			Can anyone provide any insight on which conduit is more suitalbe for a commercial application and advantages/disadvantages to using either type?
Thanks
				