Stability Design of Multi-storey Timber Structures

Stability design of buildings is an extremely important discipline within the field of structural engineering.This report demonstrates, with help of a worked example, the theory behind the stabilisation of multi-storey timber structures.

The worked example is an existing 6-storey building, primarily made with cross laminated timber (CLT). The construction project is located in central Umea and is designed and managed by Martinsons Byggsystem. The building uses an array of CLT wall panels as a stabilising system.

A number of key points that will be looked at in the worked example; firstly, analysing the loads acting on the building, specifically the calculation of lateral wind loads and their effect on stabilising CLT panels; secondly, a deeper look into the methods of stabilisation using CLT walls. This will include the stability checks for overturning, sliding and shear and counter measures taken against any potential instability.

Finally, a look into how CLT walls can be designed by hand calculations according to Eurocodes. There is no particular predefined method to do this, so this report will show how to design a CLT wall by treating CLT as either a homogeneous material or a non-homogeneous/composite material.
Source: Umeå University
Author: Brajerski, Thomas

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