1. 14.10.2010Walter Werner, past president of DA11 Demolition in Germany A case study and update on demolitions developments in Germany

2. 14.10.2010Walter Werner, past president of DA21 Demolition in Germany Contents: –Demolition industry in Germany and the German Demolition Association –waste handling current state –technical trends machines explosives

3. 14.10.2010Walter Werner, past president of DA31 Demolition in Germany Figures: total members of DA % number of companies ~ 1600 ~ 420 26 % number of employees ~ 10200 ~ 7200 71 % salaries in mio € ~ 236 ~ 167 71 % turnover in mio € ~ 1050 ~ 735 70 % company size: 2 – 250 employees most 15 – 20 employees

4. 14.10.2010Walter Werner, past president of DA41 Demolition in Germany Figures: Demolition rubble 50 mio t –recycled31 mio t = 61.5 % –plaster based waste 0.3 mio t = 0.2 % –other construction waste 1.9 mio t

5. 14.10.2010Walter Werner, past president of DA51 Demolition in Germany waste management - European frame guideline of waste management - not yet transformed totally into German law - is expected for mid of 2011 - Electronic proof of waste management - is law, but the computers do not yet work everywhere parallel paper and electronic registration = duplicated effort (= cost) - Decree of replacement of materials (recycling) - in development → open ended - because of federal structure up to 16 different regulations - decree about ground water must be modified

6. 14.10.2010Walter Werner, past president of DA61 Demolition in Germany Technical trends machines: as in other countries: but we are still missing a ultra high reach hydraulic rig ( maximum now: 43 m) -operating license in preparation start expected 2011 EDA guideline will be considered

7. 14.10.2010Walter Werner, past president of DA71 Demoition in Germany Dragline a 90 m boom is working capacity: up to 6 t complete hydraulic pipe system installed ~ 250 t

8. 14.10.2010Walter Werner, past president of DA81 Demolition in Germany Explosives new trend: use of electronic detonators even for breaking up massive structures like air raid shelters

9. 14.10.2010Walter Werner, past president of DA91 Demolition in Germany air raid shelter in the city of Lübeck,North Germany

10. 14.10.2010Walter Werner, past president of DA101 Demolition in Germany “peeling” off 2/3 of the reinforced wall by blasting, rest demolished with concrete crusher

11. 14.10.2010Walter Werner, past president of DA111 Demolition in Germany Vibrations German Standard DIN 4150 part 1: prediction/prognosis of vibrations part 2: comfort criteria: effects on persons in buildings part 3: effects on buildings/constructions

12. 14.10.2010Walter Werner, past president of DA121 Demolition Vibrations: effects on persons in buildings: could become a problem effects on buildings: low limits, but standard in many European countries solution: install a vibration monitoring instrument → costs money, but saves a lot of trouble