One of the most significant additions to the array of companies in Litomyšl was the Vertex glass-fibre factory in 1949. The architect Ladislav Machoň – author of the town's urban development plan – chose land near the “Perštejn” manor in the nearby hamlet of Nedošín. Construction of the first block was carried out between 1950 and 1952, and production started in 1953.
The extensive plant had to find housing for dozens of newly-arrived employees. According to Machoň's recommendations, the decision was made to build a housing estate as a separate urban unit in the south-west area of the Masaryk Quarter on 9. Května Street. As was the case with other housing estates for employees built during the first Five-Year Plan (1949–1953), standardized designs by Stavoprojekt, known as the “T-series”, were used for the construction of the strictly utilitarian, unadorned houses with traditional pitched roofs, rendered facades and of typical rectangular proportions, entirely lacking the inventiveness of the designs for buildings of the Two-Year Plan (04-788).
Altogether thirty-six flats in three type T12/52 semi-detached blocks with house numbers 793–794, 795–796 and 797–798 were completed in 1954 during the first phase of construction. Their minute size (two-storey buildings with hipped roofs) betrayed the fact that these “pilot designs” were not intended to be part of the larger housing estate; they were merely meant to complement the existing built-up area with its villas and houses which, up to then, were characteristic for the Masaryk Quarter. The buildings' facades reflected contemporary Socialist Realism style, albeit in its milder form without mindless ideological ornamentation (usually entailing reliefs and mosaics). The entirely smooth facade was only interrupted by the monolithic, steel-reinforced balconies. Great accent was placed on landscaping the front gardens and surrounding area, which included hedges and groups of trees marking the boundaries of the blocks. In some cases, even existing tree cover was retained.
The T12 type blocks contained two flats on each floor, with their almost square floor-plan (designated 2+1) laid out in mirror fashion to each other, and consisting of two main spaces with prefabricated stairways, windows, doors, and toilet and bathroom and kitchen units. As opposed to previous blocks of flats, the T12 type also contained a small larder opposite the toilet. The disadvantage of these blocks of flats was the short span of the ceiling panels (4.2m) resulting in smaller rooms.
In spite of their disadvantages, these flats offered good quality, comfortable housing with modern hygiene standards for workers according to standards set by the Two-Year Plan: separate bedrooms for parents and children, sufficient daylight and ventilation and easing of housework for women. For the latter there was a laundry with washing machines, mangles, sinks, drying and ironing rooms as well as space for prams, coal and food storage, and cellar space.
During the following decades, there were further phases in building the Vertex housing estate, enhancing it with a shop, kindergarten and primary school and communal pavilion. However, this building development lead by the architect Čeněk Mužík of the Choceň branch of Stavoprojekt was carried out under a new urban plan, devised by Lubomír Remel.
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