Underground construction

Ian R Brown Associates Ltd have been involved in many studies for the investigation and design of underground openings for civil and mining engineering projects in New Zealand as well as Australia and USA.

We have also followed progress in other countries with the use of underground space for domestic and commercial use. There are a number of reasons why underground space should be considered:

  • high value of land in urban areas
  • reduced costs for heating and ventilation
  • reduced visual effects viz surface buildings
  • isolation from traffic and other vibrations
  • isolation from effects of strong earthquake shaking

Access to underground space is made easier in areas where there is direct access to rock, and where hilly topography reduces the amount of cover materials. In recent years, tunnel construction has been refined by the use of a technique known as NATM (new Austrian tunnelling method). NATM involves the careful excavation of soil/rock followed by the immediate installation of appropriate support such that the support system and surrounding rock work together to form an arch. The effective use of the ground to transfer loads from the installed support means that the amount of support (and cost) can be optimised.

The following photographs give an indication of the domestic and commercial use of underground space in California.
In order of appearance, the photos show:

1 - portal to underground garage
2 - portal to wine cellar
3 - portal to wine cellar
4, 5 - underground garage
6, 7 - underground dining room
8 - wine cellar
9 - sewage treatment plant
10 - cinema

We would be delighted to discuss the use of underground space with you. Please do not hesitate to contact us.






All photographs except wine cellar © 1996 Ian R Brown Associates Ltd
Cellar photograph © Galye Gleason

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