Scaling Straw: Technical Requirements, Certificates and Workarounds for Straw Bale Buildings in Building Class 1-4

Scaling Straw: Technical Requirements, Certificates and Workarounds for Straw Bale Buildings in Building Class 1-4
Written by esba

ESBA and ASBN invited to this European-wide Zoom-Meeting (2h), where we

Links mentioned in the presentation:

Remark: Britta mentioned in the video, that there is no certificate from FASBA valid at the moment. This is only right for the F90 certificate, but there is a F30-certificate valid until 2029 (click on the screenshot or the links):

General Building Inspection Test Certificate (AbP): General Building Inspection Test Certificate, Fire Resistance Class F30-B (straw bale wall plastered on both sides with clay or lime) P-3048/817/08-MPA-BS, valid until 24 January 2029: Download

Expert opinion (AbP)Expert opinion on the General Building Inspection Test Certificate, fire resistance class F-30B (It may provide guidance on which deviations from the construction method may be considered minor by users.), valid until 27 June 2029: Download

European Certificates (full scale fire test) made by OSBN (Poland) for REI 90 (not connected to a special material-brand, so open to everybody in Europe), but with 40cm thick straw bale walls (below the whole report): In practice we would need to add 4cm of e.g. straw boards or wood fibre boards to the 36cm straw bales in a double-post timber-frame-construction.

Polish Original
English translation (automatic via DeepL, draft)

Slides shown in the presentation (Building Class 1-4):


About the author

esba

The European Straw Building Association is an independent European association, devoid of any profit making motive. The object of the Association is to promote and develop the use of straw, as a sustainable way of building in all the senses of the term “sustainable”: renewable, ecological, healthy, energy and climate efficient, social and economic.
The Association is a federation composed of organisations and people particularly concerned with the use of straw in buildings.