Complex sentence: Originally intended as a service area for cooking, laundry and heating, the Ground Floor was rebuilt during the administration of Theodore Roosevelt in 1902, and again between 1948--1952 during the Truman reconstruction.
Split into simpler sentences: Originally intended as a service area for cooking, laundry and heating. The Ground Floor was rebuilt during the administration of Theodore Roosevelt in 1902, and again 1948--1952 during the Truman reconstruction.