The Temple Institute: In-Depth Temple Study: The Ramp
 
The Ramp

The priests ascended to the mizbeach by means of a ramp, to a height of ten cubits. * A ramp was used instead of stairs, because of the Biblical prohibition: "Do not go up by stairs to My mizbeach, that your nakedness be not exposed on it." (Exodus 20, 23). Between the ramp and the mizbeach was a small space, to enable the parts of the offering to be tossed from the ramp into the flame. 
Contents:   Part I,    Part II,    Part III,    Part IV,    Part V,    Part VI,    Part VII