Latest revision as of 14:40, 30 November 2021

Abstract

The paper presents a historical outline of structural solutions of reinforced concrete floors from the turn of the 19th and 20th centuries to the half of the 20th century in the Lower Silesia region of Poland. It is based on the analysis of archival documentation and expert research carried out during the design of the revitalization of historic public and industrial buildings. The structural typology of some simple RC floors slabs used in that time of introduction of concrete into construction life as well as constructional solutions of buildings erected in western Poland in those days are presented. Nowadays, while some of these buildings undergo refurbishment process to adapt them to new functional aims these RC floors have to be strengthened using different methods, depending on the assessment results. In some of the presented design study cases assessed technical state and load bearing capacity of floors ensure the possibility of their further use without the need for significant reinforcements, except for the need for surface material repairs. However, in some cases due to concrete deterioration processes and loss of its durability, despite necessity of material renovation, structural strengthening methods needed to be applied. For example, increasing the load bearing capacity of floors by making additional concrete layers cooperating with the existing reinforced concrete slab or by changing the static scheme by making new supports up to the complete replacement of floors (not only concrete ones) with modern, concrete rib-andbeam or composite ones were considered.

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References

[1] Ahnert, R. and Krause, K.H. Typische Baukonstruktionen von 1860 bis 1960 zur Beaurteilung der vorhandenen Baussubstanz, Band 1. Gründungen, Wände, Decken, Dachtragwerke. Verlag für Bauwesen Gmbh Berlin (1991) (in German).

[2] Van de Vorde, S. International References for a building manual on postwar housing in Brussels. Innoviris retrofit: RetroCo. VUB re-use: https://www.brusselsretrofitxl.be.

[3] Voormann, F. Von der un bewehrten Hohlsteindecke zur Spannbetondecke. Massivdecken zu Beginn des 20. Jahrhunderts. Beton- und Stahlbetonbau (2005) (9)100: 836-846 (in German).

[4] Berkowski, P., Dmochowski, G., Barański, J., Szołomicki, K. The construction history and assessment of two heritage industrial buildings in Wrocław. In: D. Beben et al. (Eds): 3rd Scientific Conference Environmental Challenges in Civil Engineering, MATEC Web of Conferences EDP Sciences (2018), pp. 1-10.

[5] Dmochowski, G., Berkowski, P. Analysis of adaptation of reinforced concrete structures from early 20th century to the needs of modern requirements - a case study. In: Grantham M.G. et al. (Eds): Concrete Solutions, 6th International Conference on Concrete Repair, CRC Press (2016), pp. 9-12.

[6] Berkowski, P., Kosior-Kazberuk, M. Historical and structural aspects of the durability and maintenance of a reinforced concrete market hall building from the early 20th century. In: Grantham M.G. et al. (Eds): Concrete Solutions, 6th International Conference on Concrete Repair, CRC Press (2016), pp. 335-343.

[7] Berkowski, P., Kosior-Kazberuk, M. Construction history as a part of assessment of heritage buildings. Procedia Engineering (2016) 161:85-90.

[8] Berkowski, P., Dmochowski, G. Examples of concrete structural elements in early 20th century buildings in Wrocław (Poland) - case studies. In: Grantham M.G. et al. (Eds): Concrete Solutions, 5th International Conference on Concrete Repair, CRC Press (2014), pp. 699-706.

[9] Berkowski, P., Dmochowski, G. Strengthening and repair of damaged structural elements of revitalized apartment, public service and industrial buildings from the turn of the 19th and 20th century Poland. In: A. Strauss at al. (Eds): 3rd International Symposium on LifeCycle Civil Engineering, CRC Press (2012), pp. 1212-1219.

[10] Czaplinski, K. Former iron alloy products. DWE (2009) (in Polish).

[11] Hellebois, A., Espion, B. Material properties of reinforced concrete at the turn of the 20th century: a review of primary literature. In: R. Drochytka at al. (Eds): 2nd WTA PhD Symposium Building Materials and Building Technology to Preserve the Built Heritage, WTA Schriftenreihe, 36 (2011), pp. 248-260.

[12] Foti, D. Shear Vulnerability of Old Historical Existing R.C. Structures. Int. J. of Architectural Heritage: Conservation, Analysis, and Restoration (2015) (9)4: 453-467.

[13] Roca, P., Lourenço, P.B., Gaetani, A. Historic Construction and Conservation. Materials, Systems and Damage. Taylor &Francis (2019).