Span calculator for wood joists and rafters also available for the android os.
													
																	Shed roof rafter span calculator. 
									
	
		
	
																	In other words if there is a 1 1 2 ridge board nailed into the wall and the width of the lean to is 96 then the run will be 94 1 2 96 1 1 2 94 1 2. 
																	This calculator is to be used as an estimating tool only. 
																	Input the rafter span on the flat eave overhang and pitch of the roof. 
																	The preview window displays a dimensioned side view of the shed roof. 
															
													
									
	
		
	
																	Rise and run means that a 6 12 pitch roof has 6 of rise vertical for each foot of run horizontal. 
																	Also available for the android os. 
																	To calculate a shed roof select shed from the roof type dropdown list or click on the corresponding button on the toolbar to calculate a shed roof. 
																	Click the button to calculate the stock size needed for this job.