As a general rule of thumb most floor to floor height requirements range from 10 to 12 feet.
													
																	Maximum slope for a garage floor. 
									
		
	
	
		
	
	
		
	
	
		
	
																	The apron in front of the garage smooths the transition for the vehicle from the driveway into the garage and acts as a barrier to debris and moisture. 
																	Determining the angle of your floor s slope provides a simple method to level work surfaces in the garage. 
																	For improved efficiency the garage with two way traffic with end bay parking must have 180 ft. 
																	Minimums are limited to 8 feet 2 inches for van accessible structures and 7 feet for standard parking entrances. 
															
													
									
		
	
	
		
	
	
		
	
	
		
	
																	Here is the citation from the international residential code irc. 
																	Aci 117 90 st andard specifications for tolerances for concrete construction and materials gives a level alignment tolerance of 3 4 inch for top of slab elevation of slabs on grade. 
																	A 2 slope will probably ensure better drainage we could also find no slope tolerance for use when a floor slope is specified. 
																	Actually a very slight slope like 1 16 will get rid of the water with a little help from a squeegie. 
															
													
									
		
	
	
		
	
	
		
	
	
		
	
																	If the floor is hand screeded and isn t re leveled during the finishing process you may get a few minor birdbaths with the 1 8 ft slope but nothing a quick squeegie won t fix. 
																	Of ramp two end bays of48 feet and two spandrel widths of one foot. 
																	The building code requires that a garage floor be sloped towards the door but does not specify a minimum slope. 
																	It is usually 1 8 to 1 4 per foot. 
															
													
									
		
	
	
		
	
	
		
	
	
		
	
																	For a garage with two way traffic there is typically 180 feet of ramp two end bays of 28 feet and two spandrel widths of 1 foot. 
																	The apron s length depends on the required slope more length is needed to reduce steep slopes.