And at the same time it demonstrates the value of underground construction underground in a difficult urban context.
The fact that the numerous and diverse transport flows at Arnhem Central avoid one another is the key to the success of this project along with its high quality urban feel.
The city of Arnhem itself has played a vital role in the project.
Since 1996 it has worked closely with Ben van Berkel on the masterplan to establish the best ways of making the most of a very restricted space.
The final design has been realized by working with engineers Arup and employing specialist underground building techniques.
The result of the three party collaboration is a masterplan whose components all work in harmony with one
Mines generally have entries on the horizontal, many times from an outside quarry Floor and many workings continue on underground at that level. Some mines are inclined to follow a dipping stratum of rock. Surface quarries and underground mining are sometimes worked at the same location, winning high-grade stone from underground for special markets, while quarrying lower chemical-grade stone for use as aggregates.
Underground water reservoirs are of immense importance, particularly in the widespread arid regions of the world. In assessing the value of these reservoirs it is important to know how rapidly they are replenished, or, stated in a different way, one would like to know the "age" of underground water. The hydrogen of water coming from the atmosphere has a small content of tritium formed naturally from cosmic-ray reactions. Since tritium has a 12-year half life, it will have decayed from a static reservoir but will have a higher content in one which is continuously being replenished by rainfall, perhaps through underground streams from some distant source.
And at the same time it demonstrates the value of underground construction underground in a difficult urban context.
The fact that the numerous and diverse transport flows at Arnhem Central avoid one another is the key to the success of this project along with its high quality urban feel.
The city of Arnhem itself has played a vital role in the project.
Since 1996 it has worked closely with Ben van Berkel on the masterplan to establish the best ways of making the most of a very restricted space.
The final design has been realized by working with engineers Arup and employing specialist underground building techniques.
The result of the three party collaboration is a masterplan whose components all work in harmony with one