Published: 28 August 2012

The project aims to: A) develop a computational tool for the nodes, based on Eurocode 5 B) develop new knowledge to describe the phenomenon that occurs in timber joints lacking adequate descriptions of todays norm. The results will be brought into the calculation tool as described in point A.

Area: Industrial wood construction
Budget: 1 400 000
Duration: January 2012 - December 2013
Project: Greger Lindgren, Martinson


There are too few engineers in Sweden that can calculate wooden constructions. A major effort
that TCN can do is to support the development of knowledge and techniques that will
träkonstruktörer benefit. Discussion of certification of designers focus on the
knowledge that designers have. Today many wooden structures designed by consultants
who has a background in steel constructors, which rarely leads to optimal designs.

The knowledge needed is modeling and understanding of wood materials combined with
the timber can be used as structural materials in large structures. The skills are
cross-functional, the best is a combination of materials science and engineering technology. A large
part of a träkonstruktions competitiveness lies in how optimized connections can be designed.
These are not only designed to transmit loads, but must also have sufficient rigidity
and be rational to manufacture. Knowledge of how the joints are modeled must be developed and
spread to new building systems and new designs can be developed.

By the year 2011 had glulam industry efficient design software for structural work
and nodes. Soft Commodities Statcon Glulam and Statcon Timberjoints developed in 1996 -
2000 within the framework of the Nordic Industrial Fund and glulam industry in Norway and Sweden. These
program has not been updated in terms of programming languages ​​or standards and today they
use on newer computers. They follow not Eurocode 5, which is a requirement. Updating
existing software is impossible when the basic technology is not compatible with
newer computers. The cost will be lower if the software was developed from the beginning. Functioning
software for modeling of wood and timber joints is an important competitive factor, as
software today is the designer's main planning tool. Access to
software on a consulting office determines the choice of building materials.


The project aims to:

A) develop a computational tool for nodes with a simple user interface.
The tool will be based on Eurocode 5 and can be used in today's and
perhaps tomorrow's computers.

B) develop new knowledge through research to describe the phenomenon that occurs in timber joints
and who lack adequate descriptions of today's norm. Examples are chock crimes committed
with simultaneous normal force and torque and slip stiffness of joints.
The problem formulation is done in cooperation with industry and the results entered in the calculation tool
described in point A.

Final Report