Constructivism, but with ornate balconies, porticos and columns (usually rectangular and very lightweight). By 1938, it became disused. Moscow Master Plan (1935) In July 1935 the State evaluated the results and finally issued a decree on the Moscow Master Plan. The Plan, among other things, included Stalin's urban development ideas: New development must proceed by whole ensembles, not by individual buildings. City block size should increase from the current 1.5–2 ha (4–5 acres) to 9–15 ha (22–37 acres). New development must be limited in density to 400 persons per 1 ha (160 per acre). Buildings should be at least 6 storeys high; 7-10-14 storey on first-rate streets. Embankments are first-rate streets, only zoned for first-rate housing and offices These rules effectively banned low-cost mass construction in the old city and "first-rate" streets, as well as single-family homebuilding. Low-cost development proceeded in remote areas, but most funds were diverted to new, expensive "ensemble" projects which valued façades and grandeur more than the needs of overcrowded cities. Moscow Canal (1932–1938) The canal connects the Moskva River with the main transportation artery of European Russia, the Volga River. It is located in Moscow itself and in the Moscow Oblast. The canal connects to the Moskva River 191 kilometers from its estuary in Tushino (an area in the north-west of Moscow), and to the Volga River in the town of Dubna, just upstream of the dam of the Ivankovo Reservoir. Length of the canal is 128 km. It was constructed from the year 1932 to the year 1937 by gulag prisoners during the early-to-mid Stalin era. Moscow Avenues (1938–1941) During the late 1930s, the construction industry was experienced enough to build large, multi-block urban redevelopments – although all of these were in Moscow. The three most important Moscow projects were: Gorky Street (Tverskaya), where Arkady Mordvinov tested the so-called "flow methode" of simultaneously managing building sites in different stages of completion. From 1937 to 1939, Mordvinov completed rebuilding the central section of Gorky Street to Boulevard Ring (with some exclusions like the Mossovet headquarters). Dorogomilovo (including part of present-day Kutuzovsky Prospekt). Unlike the uniform, tight rows of buildings of Gorky Street, Dorogomilovo road was lined with very different buildings, with wide spaces between them. It was an experimental area for Burov, Rosenfeld and other young architects. These buildings were not as thoroughly engineered as on Tverskaya and wooden ceilings and partitions and wet-stucco exteriors