Köln, 09.06.2026
Professionally recognise the potential for additional work due to pollutants in demolition
Köln, 16.06.2026
Client liability when using subcontractors – also online
Hamburg, 14.09.2026
The contract in accordance with VOB/B including supplement management
22.09.2026 - 24.09.2026
Application and operation of crushers
03.11.2026
Recognise, name and declare construction waste correctly!
Köln, 24.11.2026
Professionally recognise the potential for additional work due to pollutants in demolition
Dachau, 01.12.2026
The contract in accordance with VOB/B including supplement management



