Analysis of proportional conception of the historical truss Church of St. Martin in Dolní Újezd

Peter Krušinský,Michaela Holešová,Eliška Racková,S Jemioło,M Gajewski,M Mitew-Czajewska,A Zbiciak,M Krzemiński

doi:10.1051/matecconf/201711700092

Abstract

The late-Romanesque St. Martin’s Church in Dolni Ujezd was probably built in the mid-13th century. The nave has a wooden joist ceiling whose beams serve as tie beams too. The Gothic vaults above the presbytery date from ’30s of the 15th century. The truss of the church is dendro-dated to 1420 – 1421. Some members of a truss structure are dendro-dated to 1823 – 1824, when the repair was undertaken. The examined truss is a rafter-collar tie structure with collar beams and pedestal struts. It has a characteristic shape and may be typologically classified as a structure of the earlier period. This type of a truss structure was typically built in this region and represents one of the features occurring in the particular social and culture circles at the time.

Highlights

Analysis of proportional conception is based on historical-structural, archival and dendrochronological research of the object as a whole
The third type is similar to the second one; except to saltire crosses at the level of the first collar beam which are replaced by heel struts dovetailed into the collar beam and rafters
The heel strut is located on a tie beam at a distance of x from the position of a rafter heel (i.e. 1/8 of the truss width) and positioned on a rafter in a height of 3/8 of the length of the BC side of the ABCD square (Figure 4)

Summary

Introduction

Analysis of proportional conception is based on historical-structural, archival and dendrochronological research of the object as a whole. The Proportional Relationship of historic trusses was analysed mainly from Slovakia and Czechia. The roof height is proportionally and geometrically derived from the ground plan of the building. This principle has been identified in other historical roof trusses of Slovakia and Czechia, which we were analysing The church was probably built in the mid-13th century. It has a late-Romanesque core dated from this century - only the tower and west nave survived to this day. Century, a new presbytery arose on the churchs eastern elevation; it is built in high-level architecture (shafts and the lower part of arch ribs survived). Several small modifications were made later, but they did not affect the overall appearance of the church. [1,2] (Fig. 1.)

Truss construction

Geometric concepts and proportional relationships within the truss

Conclusion