Ezekiel 41:5-9, 11

Then the man measured the wall of the Temple, which was ten and one-half feet thick. There were side rooms seven feet wide all around the Temple. The side rooms were on three different stories, each above the other, with thirty rooms on each story. All around the Temple walls there were ledges for the side rooms. The upper rooms rested on the ledges but were not attached to the Temple walls. The side rooms around the Temple were wider on each higher story, so rooms were wider on the top story. A stairway went up from the lowest story to the highest through the middle story. I also saw that the Temple had a raised base all around. Its edge was the foundation for the side rooms, and it was ten and one-half feet thick. The outer wall of the side rooms was about nine feet thick. There was an open area between the side rooms of the Temple

The side rooms had doors which led to the open area around the outside of the Temple. One door faced north, and the other faced south. The open area was about nine feet wide all around.