The Influence of Faulty 19^th Century Technical Solutions on a Work of 18^th Century Rafter Framing as Exemplified by Church in Nowy Kościół in Lower-Silesia, Poland - Case Study

Abstract

In this article the authors present a monumental rafter framing of a baroque church in Nowy Kościół Lower-Silesia, Poland. The rafter framing was built in the 18th century and it was repaired in the middle of the 19th century by adding some new structural elements. The authors have analyzed the original construction and the reinforced construction from the 19th century and they found some large destruction of particular elements. In the presented example, the rafter framing required immediate renovation at the time, on account of its very bad technical state. This bad condition resulted from the damage of structural elements during ineffective attempts of repair, which were made in the middle of the 19th century, and due to a natural ageing process and the destruction of materials. The authors of article suggest renovation of the structural elements by adding in new supporting elements to strength them, which will force modification of reinforced elements work. The authors suggest renovation in such a form, that the monumental character of rafter framing would be preserved.

The Reinforcement, Reconstruction and the Conservation of Historical Masonry Walls - Case Study

“…Single-layer ballast walls have high a resistance to geometric deformation, which is of beneficial effect when it comes to the symptoms of negative processes that have occurred in them, e.g. those related to their overload [7,8,9,10].…”

Influence of Long-Time Work of 19^th Century Modern-Type Roof Construction on Technical Condition of Vaults of Gothic Church

“…The second one being the effect of the dynamic vibrations generated by heavy vehicles transporting aggregates from the nearby basalt mine in the second half of the 20th century, that drove the street which was located 5 meters from the presbytery walls, cobbled with stones until the 1990s, and later on covered with asphalt. [4,5]. It was found that both the nave and the presbytery vaults are currently working in the postdamage phase within the meaning of the current standards regarding load-bearing capacity of masonry structures.…”

“…It was not necessary to use the same material for the nave vaults which were strengthened with carbon-fiber-reinforced fabrics combined with cement matrix (CFCM) [4].…”