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Full and Partial Structures of Historical Roof Trusses in Assessment of Volume of Timber Used for Construction

Architecture, Civil Engineering, Environment
Volume 11 (2018): Issue 3 (September 2018)
By:
Open Access
|Apr 2019

Figures & Tables

Figure 1.

Classification of rafter framings according to J. Tajchman (source: J. Tajchman 2010) a) scheme of rafter framing with collar tie (made in Middle Ages) b)scheme of rafter framing made in modern times
Classification of rafter framings according to J. Tajchman (source: J. Tajchman 2010) a) scheme of rafter framing with collar tie (made in Middle Ages) b)scheme of rafter framing made in modern times

Figure 2.

Church of the Archangel Michael in Wierzbnik (source: D. Bajno archives)
Church of the Archangel Michael in Wierzbnik (source: D. Bajno archives)

Figure 3.

Roof framings based on lying secondary rafters and hanging king post pattern (source: D. Bajno archives)
Roof framings based on lying secondary rafters and hanging king post pattern (source: D. Bajno archives)

Figure 4.

Roof framings based on collar tie pattern (source: D. Bajno archives)
Roof framings based on collar tie pattern (source: D. Bajno archives)

Figure 5.

Sequence of full and partial patterns in the analyzed rafter framing (source: D. Bajno archives)
Sequence of full and partial patterns in the analyzed rafter framing (source: D. Bajno archives)

Consumption of construction timber for the construction of truss type 2 (Figure 4)

TIMBER VOLUME INROOF TRUSSES BY MODULE 2
Type of module: full-full-full (module length – 3m)Type of module: incomplete-full-incomplete (module length – 3 m)
Number of unitsRoof truss volumeModule volumeNumber of unitsRoof truss volumeModule volume
Full roof framings of type 1A3 trusses2.016.031 truss2.012.01
Incomplete roof framings of type 1B---2 trusses1.282.56
Purlins connecting trusses spatially (8pcs)3m0.341.023 m0.341.02
TOTAL MODULE VOLUME14.31 m3 TOTAL MODULE VOLUME10.21 m3
PERCENTAGE OF TIMBER USED
module consisting of three full roof framings 100.0%module consisting of one full and two incomplete roof framings79.3%

Consumption of construction timber for the construction of roof framing type 1 (Figure 3)

TIMBER VOLUME IN ROOF TRUSSES BY MODULE 1
Type of module: full-full-full (module length – 3 m)Type of module: incomplete-full-incomplete (module length – 3 m)
Number of unitsRoof truss volumeModule volumeNumber of unitsRoof truss volumeModule volume
Full roof framings of type 1A3 trusses4.3913.171 truss4.394.39
Incomplete roof framings of type 1B---2 trusses2.344.68
Purlins connecting trusses spatially (7pcs)3 m0.381.143m0.381.14
TOTAL MODULE VOLUME14.31 m3 TOTAL MODULE VOLUME10.21 m3
PERCENTAGE OF TIMBER USED
module consisting of three full roof framings 100.0%module consisting of one full and two incomplete roof framings71.3%
DOI: https://doi.org/10.21307/acee-2018-033 | Journal eISSN: 2720-6947 | Journal ISSN: 1899-0142
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Language: English
Page range: 7 - 11
Submitted on: Nov 6, 2017
Accepted on: Aug 23, 2018
Published on: Apr 4, 2019
Published by: Silesian University of Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 times per year
Keywords:
Historic buildings,
Rafter framing,
Roof framings,
Modular construction
Related subjects:
Architecture and design,
Architecture,
Architects, buildings

© 2019 Magdalena CHYLEWSKA-SZABAT, published by Silesian University of Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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