Kings III 6:6

6 The under side five cubits broad, and the middle six, and the third seven cubits broad; for he formed an interval to the house round about without the house, that they might not touch the walls of the house.

Kings III 6:6 In-Context

4 And he made to the house secret windows inclining inward.
5 And against the wall of the house he set chambers round about the temple and the ark.
6 The under side five cubits broad, and the middle six, and the third seven cubits broad; for he formed an interval to the house round about without the house, that they might not touch the walls of the house.
7 And the house was built in the construction of it with rough hewn stones: and there was not heard in the house in the building of it hammer or axe, or any iron tool.
8 And the porch of the under side below the right wing of the house, and a winding ascent into the middle , and from the middle to the third story.

The Brenton translation of the Septuagint is in the public domain.