High rise buildings could have their frames built from timber in the future, as the Graz University of Technology (TU Graz) explores a new system
The new timber module system would allow easy removal of one damaged section, to be replaced with a new section.
This would extend the building’s life-span as well as simplify building maintenance.
The timber module system combines modular and skeleton construction
The system works to semi-future-proof the building, as in many cases it is easier to build a new for-purpose building than to renovate or convert an old building, wasting resources.
This waste of resources adds to a global greenhouse gas emission contribution of 40% for the construction industry.
Therefore, this new system would allow for much easier conversion through a modular skeleton system. Prefabricated timber modules are stacked on top of each other and next to each other, providing a supporting structure for floorplans, which can be adapted through simple construction or removal of partition walls.
Replacing a module consists of disconnecting water, electricity, and heating lines, then a lifting cylinder is inserted between spacers to allow removal. A shear plate then redirects the forces after the cylinder is lowered and space is made for the replacement of the part.
This system allows for a building 24 storeys high to be constructed, albeit with a concrete core for buildings above six storeys.
“We have combined the advantages of modular wood construction… …with the advantages of skeleton construction”
A spokesperson for the research team at TU Graz said: “If a property is no longer fit for purpose, it is usually demolished even though it would still be perfectly usable. Even in the event of damage to individual parts of the building, the entire building usually has to make way.
“That’s why the circular ‘R-strategies’ such as refurbishment, repair or re-use were very important for us in the Mohoho project, in order to develop a building system that offers a CO2-reduced alternative to conventional construction methods in high-rise construction
“In Mohoho, we have combined the advantages of modular wood construction, such as the high degree of prefabrication and the short construction time, with the advantages of skeleton construction,” said Keuschnig.
“The prefabrication of the modules in a production hall under controlled conditions enables higher quality and traceability of the joints compared to on-site assembly and ensures shorter construction times as well as reduced noise and dirt pollution.
“The repairability and flexibility of the construction system should significantly extend the operating life and life span of the building.
“During dismantling, the modules can either be reused directly or separated by type. We are already planning a follow-up project in which we want to test and scrutinise all of these things in practice.”
The team has submitted an application for a patent for the timber module system.
