Wooden construction of the movable roof of the garden pavilion in Český Krumlov castle

0562889 - ÚTAM 2023 RIV CZ eng C - Conference Paper (international conference)
Bláha, Jiří - Kloiber, Michal
Wooden construction of the movable roof of the garden pavilion in Český Krumlov castle.
Proceedings of the SHATIS 2022 – 6th International conference on structural health assessment of timber structures. Prague: Institute of Theoretical and Applied Mechanics, 2022 - (Kunecký, J.; Hasníková, H.), s. 221-227. ISBN 978-80-86246-54-3.
[SHATIS 22. International conference on structural health assessment of timber structures /6./. Praha (CZ), 07.09.2022-09.09.2022]
Institutional support: RVO:68378297
Keywords : lookout pavilion * gazebo * non-destructive testing * roof * timber * wood
OECD category: Construction engineering, Municipal and structural engineering

A remarkable technical monument is situated on one of the garden terraces belonging to the state castle and chateau in Český Krumlov. The umbrella-shaped roof of the lookout pavilion can be lifted about a meter above the masoned parapet allowing the visitor a beautiful view of the World Heritage town panorama when the weather is fine. In windy conditions or in case of heavy rain the roof could be lowered and the pavilion thus closed. The lifting is operated by means of a wooden lever mechanism with a counterweight box hidden in the basement level of the building. The unique construction was built in 1823 and needed to be partially altered in 1830-1835. However, since then it has been preserved in a surprisingly authentic state even allowing practical demonstrations of its original function. Prior to recent repairs in 2016, a comprehensive non-destructive survey was conducted. The extent of the damage discovered was determined by measuring the speed of elastic wave propagation using stress waves (Fakkop 2D) and measuring the mechanical resistance when drilling with a thin bit using resistance micro-drilling (Resistograph). Another method based on loading timber by means of a
miniature loading jack inserted into a drilled hole was selected to determine the current mechanical properties.
Permanent Link: https://hdl.handle.net/11104/0335066