The company is executing a development of 540 hectares, the largest in Madrid\u2019s history
\nSando, currently working on the El Ca\u00f1averal housing development, the largest urbanisation project in Spanish history, today completed the intermediate section of a hydro tunnel using its own tunnel boring machine (TBM). <\/p>\n
Sando\u2019s team of thirty professionals prepared the mixed shield LOVAT RME 185SE EPB TBM for an 18-month project to excavate half the length of the emergency tunnel and wells. <\/p>\n
The hydro tunnel forms part of the expansion project for the collector system of the development. This drainage system, 3,950 metres in length, will serve to collect water and channel them into a future storm drain. <\/p>\n
The machine has a boring diameter of 4.71 metres, advancing an average of 21.2 metres a day with a maximum of 32.2 metres daily. This section was carried out within the established period and the entire tunnel, at a depth of 23 metres is scheduled for completion in December. <\/p>\n
The significant size of the El Ca\u00f1averal, consisting of a series of structures, will require over seven million kilos of steel with over 800 people currently working directly on the project. <\/p>\n
Once finished, the development will be isolated from the noise of the surrounding motorways M-45 and R-3 by a perimeter of acoustic panels 20 metres in height. The development will also have a rotunda with a radius of 300 metres to regulate local traffic. <\/p>\n
SANDO is one of the leading companies in the Spanish construction sector, with activities throughout Spain in addition to projects in Poland and Hungary. Sando is divided into five divisions: Construction, Environment, Concessions<\/a>, Materials and Supplies and Real Estate, with a turnover of 1,033 million Euros in 2007. The company has assets of 316.5 million Euros and a total staff of 2,700 employees. Sando applies a policy of Corporate Social Responsibility in all its business activities.<\/p>\n