NET
6 The side chambers were in three stories, one above the other, thirty in each story. There were offsets in the wall all around to serve as supports for the side chambers, so that the supports were not in the wall of the temple.
Darby
6 And the side-chambers were three, chamber over chamber, and thirty in order; and they entered into the wall which the house had for the side-chambers round about, that they might have hold; but they had not hold in the wall of the house.
KJV
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 hold, but they had not hold in the wall of the house.