Contractor Alamoot to build 7 km twin-tube metro tunnel for client Tabriz Urban Railway Organization (TURO). Excavated diameter is 6.8 m and inner diameter is 6 m. Two NFM Technologies EPB TBMs will be used. Lining with prefabricated concrete rings, with five 1.4 m-wide segments and key per ring. The line also includes one 80 m-long station every 800 metres. Click here. Visit www.nfm-technologies.com and www.alamoot-co.com 03/06.According to conducted feasibility studies, three routes have been selected with a total length of 44 km and 60 stations for the metro in Tabriz. Priority has been given to Line 1 with a total length of 18 km and 28 stations. This route starts from EI Gloi (southeast part of the city), passes through Bahman 29 Boulevard, Emam Khomeini Avenue (main street of the city), Khayyam Avenue and ends up in Lale district. The first part of this line is under construction and the second part is being designed. At both ends of the line, main terminals and depots have been designed for wagon maintenance and repair.Construction of Line 1 is divided in several phases. Phase one starts at EI Gloi terminal and ends at Rah-no-maee. This section is a shallow tunnel and is under construction by cut-and-cover method.Phase two starts at Rah-no-maee and ends at Tabriz University Round Square. This section comprises a pre-stressed elevated bridge starting from Shahriyar hotel and passing over Bahman 29 Boulevard and the entrance of Vali-Asr Street and then gradually reaches ground level in front of Bahman 29 hospital where station number six and the Tabriz Urban Railway Organization (TURO) central control room and head office building will be located. The rest of line will be a shallow tunnel up to Tabriz University Round Square.Phase three starts at Tabriz University Round Square and ends at Khayyam Avenue. This section will be constructed as a deep tunnel for a total length of eight kilometres due to existing city life, narrow avenues and tall buildings along the avenues. Excavation will be done by an EPB shield machine supplied by NFM Technologies. The tunnels will be twin tubes of 6.88 m diameter.Phase four starts at Khayyam Avenue and ends at Lale terminal. This section is being designed and alternatives are elevated bridge and shallow tunnel. Click here. Visit www.tabrizmetro.org 06/06.