'Upper chambers' in the Bible

Then David gave to Solomon his son the pattern of the porch, and of the houses of it, and of its treasuries, and of its upper chambers, and of its inner parlors, and of the place of the mercy-seat,

And the weight of the nails was fifty shekels of gold. And he overlaid the upper chambers with gold.

Now the upper chambers were shorter: for the galleries were higher than these, than the lower, and than the middlemost of the building.