'Thickness' in the Bible

Behold, a wall on the outside of the house all around, and in the man's hand a measuring reed six cubits long, of a cubit and a handbreadth each: so he measured the thickness of the building, one reed; and the height, one reed.

The thickness of the wall, which was for the side rooms, on the outside, was five cubits: and that which was left was the place of the side rooms that belonged to the house.

In the thickness of the wall of the court toward the east, before the separate place, and before the building, there were rooms.