In November 1806 Latrobe finished a comprehensive scheme for rebuilding the north wing, which had fallen into disrepair despite being only six years old. He wanted to remove the rotting floor joists and lay new masonry floors on solid brick arches and vaults. This construction method would make the wing sturdy and fireproof.
This plan is for the third or attic story, and shows by its blue watercolor washes the rooms that would receive light from lanterns or skylights on the roof. The plan also shows an early idea for an expanded east portico and the elimination of the circular conference room on the western side.
Architect of the Capitol