mohring engels.indd - Keramo Steinzeug
mohring engels.indd - Keramo Steinzeug
mohring engels.indd - Keramo Steinzeug
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7.3<br />
7000<br />
6000<br />
5000<br />
4000<br />
3000<br />
2000<br />
1000<br />
DM/m<br />
0<br />
Berlin 1997<br />
0 1,75 3,00 4,00 5,00 6,00<br />
Open construction<br />
Micro-tunnelling<br />
Sewer-construction costs compared above the water table<br />
open construction / micro-tunnelling using vitrified-clay pipes<br />
Surface concrete paving<br />
2,45 m - DN 300<br />
3,40 m - DN 800<br />
4,00 m - DN 500<br />
DN 600<br />
4,30 m - DN 400<br />
Micro-tunnelling Page 27<br />
Depth in meters<br />
DN-200 DN-250 DN-300 DN-400 DN-500 DN-600 DN-800<br />
Sewer-construction costs compared:<br />
surface concrete paving<br />
For concrete-paved surfaces jacking for DN 200<br />
and DN 250 is more cost-effective at all depths<br />
considered and for<br />
DN 300 at depths > approx. 2,45 metres<br />
DN 400 > approx. 4,30 metres<br />
DN 500 and DN 600 > approx. 4,00 metres<br />
DN 800 > approx. 3,40 metres.<br />
Fig. 30
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