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- Almevik, Gunnar, 1969, et al.
(author)
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Conservation Theory for Enhanced Craft Practice
- 2016
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In: Structural Analysis of Historical Constructions – Anamnesis, diagnosis, therapy, controls. Van Balen & Verstrynge (eds.). - London : Taylor & Francis Group. - 9781138029514
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Book chapter (peer-reviewed)abstract
- To improve conservation practice, heritage conservation as a professional field needs to gain a better understanding of how different forms of expertise and skill coalesce in their material interventions in heritage objects (Jones & Jarrow 2014). Among the actors involved in conservation, the craftsman is the one who spends most time on site, close to the source material, and whose innumerable decisions have the greatest impact on the final result (Almevik 2016). Nevertheless, the craftsman is often reduced to a means of production, and is thus detached from the historical inquiry, the design and the structural analysis. This inconsistency is poorly explored in previous research. Taking off from a case of heritage conservation of a medieval corner-timbered tithe barn, this paper explores what an enhancement of craftsmanship in the conservation process implicates in terms of conservation theory. The questions for this paper are: How may craftsmanship be enhanced in the conservation process? What does augmented involvement of craftsmen implicates in terms of conservation theory? Furthermore, arguing that contemporary heritage conservation has to take on a community-based approach to support local heritage values: How may craftsmanship be used in participatory and community-based methods? The research questions have been investigated through the conservation of a 13th century corner-timbered tithe barn in Ingatorp, Sweden. Until recently the barn was an anonymous building used for storage of equipment. A dendrochronological analysis dated the building to 1229±10 years. This makes the tithe barn the second oldest preserved wooden building in Sweden. The research method is practice-led and experiential, using the restoration prac-tice as an arena for inquiry and the methods of practice as methods of inquiry (Almevik & Melin 2015). Concepts and perspectives are influenced by semiotic pragmatism and environmental dynamics and focused on contemporary theory of conservation (Sully 2015, Silberman 2015). The research reveals how the craftsmen’s perception contribute to the forensic building investigation to outline of a buildings history and to obtain a thorough understanding of the structural behaviour of the built cultural heritage. The conclusion underpinned by theoretical inquiry and experimentation in this case is that it is possible to enhance craft practice in all steps of the conservation process, and that doing so is productive in regard of aesthetic, historic, scientific and social heritage values.
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| 2. |
- Miccoli, L., et al.
(author)
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In-plane shear behaviour of earthen materials panels strengthened with polyester fabric strips
- 2016
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In: Structural Analysis of Historical Constructions. - : CRC Press/Balkema. - 9781138029514 ; , s. 1099-1105
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Conference paper (peer-reviewed)abstract
- An experimental investigation was carried out to study the in-plane shear behaviour of earthen material panels strengthened with polyester fabric strips. Strengthened panels were developed to exploit the strength potential of earthen materials and to solve its lack of tensile strength, significantly improving not only strength but also ductility. Three earthen materials were considered: cob, earth block masonry (EBM) and rammed earth (RE). As first approach the strengthening configuration, based on different adhesive materials, was tested only for cob panels. As part of the study the results of a big testing campaign of unstrengthened panels were considered. Seven strengthened panels were tested in diagonal compression/shear.A unique reinforcement orientation was used. The results of these tests are presented in this paper, and include the load-displacement behaviours, crack patterns, failure modes. The results showed that the reinforcement was the most effective in EBM panels, with increase in strength and ductility observed. In RE and cob panels the reinforcement did not likely contribute significantly to the shear resistance, due to a lack of embedment length of the strips. Instead, in EBM it was likely that the vertical reinforcement acted in tension to restrain shear induced dilation and to restrain sliding.
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