Detachable Connections for Circularity of Timber Buildings
Typ
Examensarbete för masterexamen
Program
Publicerad
2021
Författare
AL SHAMAA, ABDULRAHMAN
SALEH, KHADEEN
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
Connections in timber constructions have high importance, as they are responsible for
transferring loads between the different structural parts, achieving sufficient stiffness
and ductility for the building. Detachable connections present a new concept in terms
of building industry, which is cradle to cradle instead of the ordinary one cradle to
grave, and that is attended by maximizing the circle of material reuse and cutting down
the building-related material waste. This thesis aims to develop a connection that allows
the assembly and disassembly of the timber buildings and enhances the reusability of
the timber construction elements in other projects. The development of the connections
will be applied explicitly to the multy-story building presented by Derome AB. For
understanding the assembling and disassembling process, the theory part presents
information about different timber connection types and the performance of various
fasteners used in practice. Furthermore, the concept of design for disassembling, known
as “DFD” illustrates the disassembling process and how it affects various connections.
At the same time, the analysis shows a defined criterion that measures the connection
suitability for DFD. It was noticed that the criteria factors with the highest impact on
the disassembly of connection are wood reuse, accessibility, ease to be assembled, time,
and costs. Moreover, the timber connection, which uses certain fasteners types or
additional conjunction parts, was better in DFD. In general, reducing the required tasks’
number for installing or uninstalling the structural elements, and enhancing the
capabilities of mechanical fasteners by adding interfaces between connection parts,
increase the connection satisfaction for assembling and disassembling.
Beskrivning
Ämne/nyckelord
DFD, design for disassembling, detachable connection, timber , construction method and timber connection.