Timber Engineering in the 21st Century

By Rubner Holzbau

Timber Engineering in the 21st Century

By Rubner Holzbau
November 2021

Wood, which apart from loam is the world’s oldest building material, today is more efficient than even before. Wood not only is a light, stable and renewable material but it also has the capacity to store carbon, and it is heat insulating and fireproof. There is no other material, which is more aesthetic and more manifold in its applications than wood and therefore is the natural answer to all building challenges of the future.

The renewable resource wood is processed in our production sites with the least energy input of all common building materials. With our factory owned sawmill, which is located in the Austrian region of Styria, we cover the entire value added chain from raw material to finished project. Being a CO2 reservoir, wood contributes to environmental and climate protection and thus to the preservation of our environment. By manufacturing glued laminated timber, specific material properties are emphasized, mechanical performance is improved and the material is optimized to meet all the requirements in terms of sound, thermal insulation, fire protection, safety and economic efficiency.

Overall sustainability is a top priority issue in Rubner Holzbau. This prioritization is underlined by using domestic wood from sustainably managed forest, which is certified by PEFC (Programme for the Endorsement of Forest Certification). In addition, the low ecological impact of our production sites and recycling of generated production waste clearly speak in our favour.

Every year, Rubner Holzbau produce around 85,000m3 of glued laminated timber (glulam) in production sites located in Ober-Grafendorf (AT) and Brixen (IT). Glulam is an engineered wood product comprising of multiple layers of finger-jointed lamellas. Regardless of which type of wood – spruce, pine or larch, having a similar load bearing capacity as steel, glulam scores with considerably lower weight and therefore allows constructions with large span widths but free of thermal bridges. Apart from being an extremely durable material, it can be designed to fire resistance and to resist seismic impacts. Laminated timber components in the common timber strength classes pursuant to Eurocode 5-1-1 are fabricated in our production sites in accordance with individual project requirements.

Freshly felled and industrially dried, the raw lamellas are delivered from our sawmill to the production sites just in time to enter the fully automatized processing chain. Following a very strict quality control, up to 50m long boards are produced by finger-jointing technique. These lamellas are then finally planed and glued and then formed into the desired shape in a pressing jig.

Once the hardening and planing processes have been concluded, computer numerical control (CNC) machines cut the beams to the exact dimensions, according to the CAD design. Laser-controlled drilling and milling tools provide for quality workmanship of millimetric accuracy. With continuous control mechanisms, we can achieve a precision of the timber elements, which even falls below tolerance limits. The girders can then be either painted or impregnated depending on requirements. In a final step, the steel elements such as connections will then be integrated.

Rubner Holzbau has gained a solid reputation all over the world with our high quality and constructive solutions. As a timber engineering expert, we have executed a great number of outstanding and complex projects. Industrial building or infrastructure constructions, sports facilities or educational institutions – all these have projects have one thing in common: the confident handling of the building material wood, which has been practiced in the Rubner company for more than 90 years now.

Whether it is simple load-bearings system or complex timber constructions, construction kits or all in one solution, our timber engineering experts are professionally and reliably assist the business partners. We take care either the entire project planning process – including detailed engineering and workshop design, we account for construction site management across different trades or we simply assume production, delivery and assembly of individual elements.

The more complex the building assignment is, the more important will be the aspects of reliability, competence and security. Adherence to cost and schedule, secured processes and successful interface management are indispensable factors. With a one stop service for the timber construction solutions, it is not only innovative but also economically efficient.

All product management and fabrication processes are subject to continuous internal quality controls and to external certification procedures by accredited test institutes. This quality control comprises PEFC certified raw materials, ISO 9001 project implementation, as well as production and component construction in accordance with RAL or the EN Euronorm.

Rubner Holzbau has 18 offices located in Austria, Italy, France and Germany and this enables us to have secure direct and rapid exchange with our business partners. Now we have many significant projects all over the world – Europe, Asia, America, Africa and Australia. 
 

Mactan Cebu International Airport, Philippines.

Aquaworld Resort, Hungary. 

Skelton Lake Services, United Kingdom.

Astrakhan Sport Complex, Russia. 

For more information about Rubner Holzbau, visit: https://www.rubner.com/en/holzbau/

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