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The Life and the Work of the Prague Carpenter Michael Ranek
Bláha, Jiří
The designs of the low-cost roof trusses created at the end of 1820s by Prague carpenter of Hungarian origin Michael Ranek (1770-1842) form a sort of link between traditional trusses with collars and modern purlin constructions. The swift adoption of Ranek’s truss among carpenters was helped by the relationship of trusses to traditional collar systems, easier handling of beams with smaller profiles and last but, not least, its simplicity during fabrication and erection. During the course of the second half of the 19th century Ranek’s trusses, together with traditional trusses with collar beams, were forced out by new, progressive constructions, especially by the generally widespread purlin trusses.
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Timber Roofs in the Southern Part of Bohemian-Moravian Uplands
Bláha, Jiří ; Kyncl, T.
The vast majority of historic roofs in the region belong to the common rafter and collar typological group. The large diversity and variability of technical solutions, especially noticeable in the lengthwise frame construction allows us to trace the evolution of traditional carpentry as well as to map its local differences. The Bohemian-Moravian Uplands region is one of the relatively homogenous areas, where the timber transport distance from the place of felling the trees to the site was very short. There are no large rivers, and the altitude is 500-840 meters (about 1500-2500 ft.)above sea level.
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