Ezekiel 41:6-8 21st Century King James Version (KJ21)
6 And the side chambers were three, one over another, and thirty in order; and they entered into the wall which was of the house for the side chambers round about, that they might have support, but they had no support in the wall of the house.
7 And there was an enlarging and a winding about still upward to the side chambers; for the winding about of the house went still upward round about the house. Therefore the breadth of the house was still upward, and so increased from the lowest chamber to the highest by the middle chamber.
8 I saw also the height of the house round about; the foundations of the side chambers were a full reed of six great cubits.