e-mosty September 2018 Vessels and Equipment Used for Bridge Construction | Page 63

KEY COMPANIES INVOLVED IN THE PROJECT
Administration:
Sub-Subcontractor of Substructures of the Bridge for Tow
and Submerging of the Caissons (Engineering,
Consultancy and Operation Management Sub Contractor
of the STFA): SMIT/Boskalis
Turkish State General Directorate of Highways (KGM)
Concessionaire:
OTOYOL YATIRIM ve İŞLETME A.Ş
Sub-Subcontractor of Substructures of the Bridge for
Dredging and Bedding Works (Sub Contractor of the
STFA): Aras Marine
Main Contractor:
NOMAYG JV
Sub-Subcontractor of Substructures of the Bridge for
Inclusion Pile Driving (Sub Contractor of the
STFA): Körfez Deniz
Bridge EPC Contractor:
IHI-ITOCHU Consortium Vendor for Marine Operations including Tow and
Submerging of the Caissons (Vendor of the STFA):
STFA Marine Construction Co. / Istanbul, Turkey
Subcontractor for Substructures of the Bridge: Vendor for AHTS Tug Boats for Tow and Submerging of
the Caissons (Vendor of the STFA): Directorate of Coastal
Safety / Istanbul, Turkey
STFA Construction Co.
STFA Construction Company was one of the two
executive subcontractors of EPC Contractor IHI
Infrastructure Systems, which was responsible for
Substructure Construction of the bridge project including
especially tower foundations located in the sea and
anchorage structures and piers located on land.
Subcontractor for Superstructures of the Bridge:
Cimtas Steel Production, Erection and Installation Co.
(ENKA Holding)
Vender for Heavy Lift Crane Supply to Superstructures of
the Bridge:
Vendor for DP Class-II DSV (SPS Astrea Diving Supply
Vessel) for Tow and Submerging of the Caissons (Vendor
of the STFA): Astrea Shipping Company / Piraeus, Greece
Vendor for Marine Operations including Tow and
Submerging of the Caissons (Vendor of the STFA):
STFA Temel Soil Investigation Co. / Istanbul, Turkey
Vendor for Supply of Hydraulic Hammer for Inclusion Pile
Driving Works (Vendor of the STFA through Korfez
Deniz): IHC Nederland through ERKE Turkey
Vendor for Design, Manufacturing and Supply of
Underwater Levelling Equipment for Bedding Works
(Vendor of the STFA through Aras Marine):
Funda Makine (Machine) Co. / Istanbul, Turkey
Boskalis
References:
TASAN, Hasan – ERGUL, Erdal – NACAR, Baris:
The Caissons for the Tower Foundations. Izmit Bay Suspension Bridge Project. MWWD & IEMES 2014.
STFA magazine “Kopru” (“Bridge”)
www.stfa.com
3/2018