ASVOLKAN

The company has started its business as Volkan İnşaat since 1993. AS Volkan Tunel is one of the most experienced, fast
growing and independent contractor based in Istanbul. We specialize in building all kind of turnkey tunnel projects(subways,
highway tunnels, canals), Hydro power plants, civil constructions, industrial plants, engineering structures, and their
rehabilitation. With more than 25 years of experience, we have successfully participated in many technically-complex projects.
Our solutions are customised exactly to the requirements of the client.
Know-How at the Highest Level
First is first… before starting the work, we determine a road map to accomplish them in time. For that reason, using the latest
civil engineering technologies play a key role in our projects. We are in tune every technological progress all around the world
in the construction sector.

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Dudullu-Bostancı Subway Project
Dudullu-Bostancı Subway Project
Name of Work :Dudullu-Bostancı Subway Project
Client :Istanbul Municipality
Location : Dudullu/Istanbul
Contractor : Şenbay-Kolin-Kalyon
Sub-Contractor : As Volkan Tünel
Date : 02/18/2017-20/08/2018
Scope of Work : Excavation of Dudullu Station platform tunnels and connecting tunnels by the NATM method.(P-type Area: 59,56 m2 length: 120 m, B1.2- type A: 27,78 m2 L: 42,00 m ). Opening of (Ø18,00 m dia. D: 43,00 m) the approach shaft. Excavation of
CT-Type tunnel by the NATM method (A:59,56 m2 38,78 m2, L:62,00 m)
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Pendik-Tavşantepe Subway Project
Pendik-Tavşantepe Subway Project
Name of Work : Pendik-Tavşantepe Subway Project
Client : Istanbul Municipality
Contractor : Şenbay-Öztaş-Albayrak
Sub-Contractor : As Volkan Tünel
Location : Pendik /İstanbul
Date : 09/09/2014 - 30/04/2016
Scope of Work : Pendik station platform, connection, and stair tunnels final concrete covering. (Isolation, reinforcement, concrete lining. P-type L: 240,00 m,
B1.2-type L: 140,00 m) The concrete covering of switch tunnel between Pendik-Tavşantepe stations (Isolation, reinforcement, concrete lining, L: 110,00 m). Maltepe Station, concrete lining of pedestrian connection tunnel (isolation, reinforcement, concrete lining, B-type 120,00 m) Pendik Station’s installation, electricity, ventilation shafts excavation, concrete lining worksIsolation, reinforcement, concrete) Ventilation Shafts: (East Shaft Ø5,00m D: 25,00m, West Shaft Ø5,00m, D:21,00m), Installation Shafts: (East Shaft Ø:5,00m D:17,00m West Shaft Ø:5,00 D:19,00m), Electricity Shafts: (East Shaft Ø:3,00m D:16,00m West Shaft Ø:3,00m D:19,00m) Yakacık Station’s installation, electricity, ventilation shafts excavation, concrete lining(Isolation, reinforcement, concrete) works Ventilation Shafts: (East Shaft Ø5,00m D: 13,00m, West Shaft Ø5,00m, D:14,50m) Installation Shafts: (East Shaft Ø:3,00m D:13,00m, West Shaft Ø:3,00m D:13,00m) Tavşantepe Station, installation, electricity, ventilation shafts excavation, concrete lining(Isolation, reinforcement, concrete) works Ventilation Shafts: (Doğu şaftı Ø5,00m D: 13,00m, Batı
havalandırma şaftı :Ø5,00m, D:14,50m)
Installation Shafts: Hat-1(East Shaft Ø:2,75 D:13,00m, West Shaft Ø:2,25 D:14,00m), Hat-2(East Shaft Ø:2,25 D:13,00m, West Shaft Ø:2,75 D:14,00m),
Electricity Shafts: (East Shaft Ø:5,00m D:16,00m)
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Levent-Ayazaga Stations Subway Project
Levent-Ayazaga Stations Subway Project
Name of Work : Levent-Ayazaga Stations Subway Project
Client : Istanbul Municipality
Contractor : Garanti Koza-Alarko Joint Venture
Sub-Contractor : As Volkan Tünel
Location : Ayazağa/İstanbul
Date : 2007/2008
Scope of Work : 4.Levent-Ayazaga station, concrete lining of platform tunnels, switch tunnels, and connection tunnels (P type 220,00m length, B type 84,00m legnth, T type 220,00m). Execavation of main tunnels by the NATM method(Tunnels types Area: 22-102m2, Length: 11500,00m).
Site grading works at depot area(68.0000m2).
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Acarkent MNG Villas
Acarkent MNG Villas
Name of Work : Acarkent MNG Villas Client : MNG-TARGEM Sub-Contractor : As Volkan Tünel Location : Beykoz/İstanbul Date : 1997-1998 Scope of Work : Rough construction of 32 ea. villas work.
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Ataköy - Ikitelli Subway Project
Ataköy - Ikitelli Subway Project
Name of Work : Ataköy - Ikitelli Subway Project Client : Istanbul Municipality Contractor : AGA Enerji (Bayburt Group) Sub-Contractor : As Volkan Tünel Location : Atakent/İstanbul Date : 29/08/2017 Scope of Work : M.Akif-Atakent İstasyonları Arasıyaklaşım şaftının açılması(Ø8,00m in dia., D: 48,00m). Ana hat tünellerinin ve bağlantı tünellerinin NATM kazı methodu ile kazılması ve nihai beton işlerinin yapılması(A Tipi, Area: 36,36 m2, Uzunluk:3000,00m).
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Altunizade Station Private Pedestarian Tunnel to Acıbadem Hospital
Altunizade Station Private Pedestarian Tunnel to Acıbadem Hospital

Name of Work : Altunizade Station Private Pedestarian Tunnel to Acıbadem Hospital
Client : Acıbadem Health Group
Sub-Contractor : As Volkan Tünel
Location : Altunizade/İstanbul
Scope of Work : Altunizade station, final concrete lining of pedestarian tunnels(Isolation, reinforcement, timber form, concrete, B type 280,00 m length) works.

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Ordu Topçam HPP

Ordu Topçam HPP

Name of Work : Ordu Topçam HPP
Client : General Directorate for State Hydraulic Works
Contractor : Garanti Koza
Sub-Contractor : As Volkan Tünel
Location : Topçam/Ordu
Date : 29/08/2003-2007
Scope of Work : Excavation of derivision tunnels, gallery tunnels and spillway tunnels by the NATM and the drill blast method (Ø:6,50m
Length:7500,00m). Construction of the power house. Construction of the tyrleon intake.
Surge shaft excavation and final concrete lining works (Ø:8,00m D:81,00m).
Surge shaft excavation and final concrete lining works (Ø:8,00m D:81,50m).
Surge shaft excavation and final concrete lining works (Ø:8,00m D:61,00m).

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Almer Business Center

Almer Business Center

Name of Work : Almer Business Center
Client : Alsim Alarko Construction
Contractor : As Volkan Tünel
Location : Maslak/İstanbul
Date : 1996
Scope of Work : Almer Business Center 3450m2 rough construction of work.