Центральный телеграф
In 1925 Rerberg secured a contract to design Central Telegraph building in Tverskaya Street; the state clients initially opted for a public contest, but were dissatisfied with avant-garde entries and preferred to hire an old school professional. Rerberg's draft was authorized in March 1926, and the building was completed in 1927. Rerberg used reinforced concrete frame and moved all staircases outside of main building shell; this resulted in unusually spacious and well-lit open space offices, new to Moscow construction. Large public area actually accounted for only 4% of its 35,000 meters; most of the space was occupied by actual telegraph and mail-sorting equipment, while 20% were allocated to house the Commissar of Communications with his staff. Later, the space taken by equipment was gradually reduced in favor of offices.