BS EN 17121:2019

What is BS EN 17121 - On-site assessment of load-bearing timber structures about?  

BS EN 17121 gives guidelines on the criteria to be used for the on-site assessment of load-bearing timber structures in heritage buildings. BS EN 17121 is intended for all those concerned with the conservation of heritage buildings that contain wooden elements, from the building owners or authorities who are responsible for them to the professionals employed.  

BS EN 17121 helps decision-making regarding the need for immediate measures. 

BS EN 17121 aim is to guarantee that condition survey and assessment provide the necessary data for historical analysis, structural safety assessment, and planning of intervention works. 

BS EN 17121 provides a comprehensive procedure for the on-site assessment. With a practical and technical evaluation of the damage found and based on the responsibility of the involved professionals, a sufficient assessment can also be made when not all the steps are followed. 

Note 1:  BS EN 17121 is applicable to any kind of timber member and to any kind of historic timber structures. 

Note 2: BS EN 17121 is not applicable to timber members made of engineered wood-based panels and glued laminated timber. 

Note 3: In each different country, the BS EN 17121 is expected to be applied in accordance with National legislation and regulations. 

Who is BS EN 17121 - On-site assessment of load-bearing timber structures for? 

BS EN 17121 on guidelines for the on-site assessment of load-bearing timber structures is useful for: 

• Architects 
• Scientific and Cultural Organization 
• Professionals employed who are responsible for conservation of cultural heritage 
• Investigation department of cultural heritage 

Why should you use BS EN 17121 - On-site assessment of load-bearing timber structures?  

The purpose of the BS EN 17121 is to consider condition survey and diagnostic methods for assessing heritage load-bearing timber structures with a view to establishing safe working loads or determining the need for strengthening or repair in order to ensure their continuing use. 

BS EN 17121 gives guidelines on the criteria to be used for the on-site assessment of load-bearing timber structures in heritage buildings that helps you while making the decision regarding the need for immediate measures. 

BS EN 17121 demonstrates the mutually dependent relationship between the preservation of structures and the preservation of the craft techniques and knowledge involved in their construction