He mema ia o te poari whakahaere me te poari kaitohutohu rangahau o te Deutscher Ausschuss für Stahlbeton (DAfStb) (Komiti Tiamana mo te Concrete Reinforced), i reira ko ia te tiamana o te poari whakahaere mai i te 2004 ki te 2012. Mai i te 2002 ki te 2008, ko ia te mema o te senate o te DFG me te 2003 ki te 2008 te tiamana o te poari whakahaere o te V-Gesellschaft, BADI Bautechnik (Association of German Construction Engineers <unk> Engineering Division). He mema ia o te roopu Tiamana o te International Concrete Association fib, a mai i te Hui-tanguru 2012 kei runga i te poari arotake o te Deutsche Forschungsgemeinschaft (DFG) (German Research Foundation). He mema ia o te poari whakahaere me te poari kaitohutohu rangahau o te Deutscher Ausschuss für Stahlbeton (DAfStb) (Komiti Tiamana mo te Concrete Reinforced), i reira ko ia te tiamana o te poari whakahaere mai i te 2004 ki te 2012.
Ko te tau 2015