1 Kings 6:8-10

The entrance to the bottom floor was on the south side of the Temple. There were winding stairs going up to the second floor, and another flight of stairs between the second and third floors. After completing the Temple structure, Solomon put in a ceiling made of cedar beams and planks. As already stated, he built a complex of rooms along the sides of the building, attached to the Temple walls by cedar timbers. Each story of the complex was 7-1/2 feet high.