Freytag and the Deutsche Beton Verein
On December 5, 1898 Deutsche Betonverein (DBV) (German concrete association) was founded in Berlin. One of the founders was, of course, Conrad Freytag. Until 1905 he was on the DBV board and was appointed honorary member in 1919.
In 1904, DBV drafted the „Vorläufige Leitsätze für die Vorbereitung, Ausführung und Prüfung von Eisenbetonbauten“ (Preliminary principles for the preparation, execution and examination of ferroconcrete structures). By decree of the Prussian secretary for public works these guidelines were turned into obligatory regulations on April 16, 1904.
In 1907 DBV and the Deutsche Architekten- und Ingenieurverband DAI (German union of architects and engineers) founded the DeutscheR Ausschuss für Eisenbeton (German committee for ferroconcrete). On May 24, 1907 this committee adopted the „Bestimmungen für die Ausführung von Konstruktionen aus Eisenbeton bei Hochbauten“ (regulations for the execution of ferroconcrete construction in building construction). On January 13, 1916 the „Bestimmungen für die Ausführungen von Bauwerken aus Beton“ (regulations for the execution of concrete structures) and on September 9, 1925 the „Bestimmungen des Deutschen Ausschusses für Eisenbeton“ (regulations of the German committee for ferroconcrete) followed as decree of the Prussian secretary for Volkswohlfahrt (People´s welfare).
In 1943 „Eisenbeton“ (ferroconcrete) was replaced by the more appropriate term „Stahlbeton“ (reinforced concrete).