This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.
													
																	Ranch house roof pitch. 
									
	
		
	
																	Pitches lower than 4 12 have a slight angle and they are defined as low slope roofs. 
																	Both could be called a ranch house. 
																	The picture below shows the pitch of a 7 12 roof slope meaning that for 12 of horizontal measurement roof run the vertical measurement roof rise is 7. 
																	Your average house just looks awkward with a roof this shallow. 
															
													
									
	
		
	
																	Usually average roof pitch is determined using the same roof length method. 
																	Hipped roofs are also common which offer a slightly different design and lower pitch. 
																	Compare these next two houses. 
																	Gable roofs on ranch style homes can have a variety of pitches from low to steep. 
															
													
									
	
		
	
																	Pitches of less than 2 12 are considered flat roofs even though they may be very slightly angled. 
																	The one on the bottom has a roof pitch of 3 4. 
																	They are very similar in their layout. 
																	Roof pitches can be as high as 12 12 according to the mhimperialhome website. 
															
													
									
	
		
	
																	Pitches above 9 12 are very highly angled and are designated steep slope roofs. 
																	Greek says one must keep rafter length in range of 1 9 to 1 7 th of span but as per roman style the standard dimensions are kept about 1 3 to 2 9 th of span with an angle of 23 to 24 degree. 
																	The one on top has a roof pitch of 1 2.