Against the walls of the main hall and inner sanctuary he built a structure around the building, in which there were side rooms.1
References for 1 Kings 6:5
The lowest floor was five cubits wide, the middle floor six cubits and the third floor seven. He made offset ledges around the outside of the temple so that nothing would be inserted into the temple walls.
References for 1 Kings 6:6
In building the temple, only blocks dressed2 at the quarry were used, and no hammer, chisel or any other iron tool3 was heard at the temple site while it was being built.
References for 1 Kings 6:7
The entrance to the lowest floor was on the south side of the temple; a stairway led up to the middle level and from there to the third.
References for 1 Kings 6:8
So he built the temple and completed it, roofing it with beams and cedar4 planks.
References for 1 Kings 6:9
And he built the side rooms all along the temple. The height of each was five cubits, and they were attached to the temple by beams of cedar.