6. D-575A-3 of Komatsu
The bigger the better is a very common phrase and it fits well when it comes to bull-dozing. The bigger, more earthly material they can shoved around. Watching a bull dozer work is not a special sight but it becomes one if the D-575A-3 is working on the site. It the worlds biggest and most powerful (production) bulldozer. It is reliable, equipped with advanced technology, advance hydraulic system, power train, frame thus making it quiet a treat. The ripper’s depth can be set manually, it can tear up solid rock and concrete with ease. It is designed for some serious rubble moving.
[youtube]http://www.youtube.com/watch?v=JVpWwE902f8[/youtube]
Attributes
| Height | 16 feet tall |
| Length | 41 feet long |
| Blade coverage | blade covers 90 cubic yards |
| Horse power | 1150 HP engine |
5. Herrenknecht EPB Shield S-300
Tunneling is one the most difficult construction job. The harsh conditions while working inside really make a difference. Temperature is high, lack of oxygen and of course the worker has to put in a whole lot effort to even do a little. But all this use to happen in past. Herrenknecht EPB Shield S-300 is a mega tunnel boring machine built to excavate a road tunnel in Madrid in 2005. It is the biggest tunnel excavating machine ever built. Not only it churches stones and bedrock it’s excavating but it also pulverizes everything to pebbles and ships it to the rear by a huge conveyer belt. It only requires a few operators and does the job much faster than the traditional way.
[youtube]http://www.youtube.com/watch?v=QJw709CWUGk[/youtube]
Attributes
| Diameter | The s-288 and s- 289 models have diameter of 8.23m each |
| Performance | Up to 187.5m and 208.5m per week |
