Description : Steel bridge supervision & inspection service for Bukhang Grand Bridge private investment construction project Bridge Name : Buk-Hang Grand Bridge Owner : Buk-Hang I Bridge Co., Ltd. Client : Samyoung Technology Corporation/Hyundai Development Co., Ltd. Prime Vendor : Hanjin Heavy Ind. & Const./Yeongchang Heavy Ind. & Const. Co., Ltd. Remarks : ●Project Name : Bukhang Bridge (Private Investment Project) ●Constructor : Hyundai Development Company ●Period: Jul. 2010 ~ Dec. 2011  ●Outline - Type : Five-span composite cable-stayed bridge with double-plane cable system - Total steel weight 30,535 ton - Total span length : L= 1,114m (60+227+540+227+60) - Width : W = 28.7m (two-way, 6-lane) - Navigation channel : 350m x 60m (navigable for 8,000-TEU vessel) ● Main Features : - Longest span among composite cable-stayed bridges in Korea - Edge Girder of Inclined Web using Welded Cable Anchor -Cost reduction by determining the central span length based on ground condition - Modified inverted Y-shaped pylon

Description : Steel bridge supervision service for Geoga Grand Bridge links Busan city to Geoje city Bridge Name : Geoga 1-Gyo(Youho-Jeodo), Geoga 2-Gyo(Jeodo-Junggukdo) Owner : GK Marine Road Co., Ltd. Client : Hansung Technology Development Co., Ltd. Prime Vendor : Doosan Machatec. Co., Ltd. Remarks :  • Period : Mar. 2008 ~ May 2010,  Constructor : Daewoo E&C J/V, Korea's first  triple pylon cable stayed bridge , Korea's first  AASHTO LRFD(Load-Resiatance Factor Design) method applied, Korea's first  F10T M30 Bolt   used, 보강형거더에 used material SM520C TMC for girder and grade K25 Lamellar tearing steel applied • Main Particulars : Few member steel plate girder, Total Steel Weight 10,032 ton, 3/4 spans continuous steel composite cable stayed bridge with triple/double pylons, Width/Lanes: 24m/5 lanes, Height of girder : 2m(I- shaped  Edge Girder) • Lot1 Triple pylon cable stayed bridge : Height  of Pylon H= 104m, Main Span  230m,     Composition of span     L 2363.5m = Approach Bridge#1(48.5+70+3@90+70=458.5)+cable stayed bridge(111.5+2@230+111.5=683) +                             Approach   Bridge#2(75+4@90+75=510), • Lot2 Double pylon cable stayed bridge : Height  of Pylon (from Average seawater level) H=156m, Main Span                     475m, Composition of span L 1866m = Approach Bridge#3(75+2@90+75=330) + cable stayed bridge                                                                                    (225.5+475+225.5=926) + Approach Bridge#4(75+5@90+85=610) • Pylon : Curved Diamond type Concrete Pylon , Cable : Multi Strand(MS) Type, Inclined 2-plane disposed, Semi-                Fan Type with 12m space

Description : Inspection service of Machang Grand Bridge during erection stage Bridge Name : Machang Grand Bridge Owner : Hyundai Construction & Engineering Co., Ltd./ Bouygues, France Client : Hyundai Construction & Engineering Co., Ltd. Prime Vendor : Doosan Machatec. Co., Ltd. Remarks : • Period : Jan. 2007 ~ Nov. 2007 • Spec : total weight 16,740 ton, cable stayed bridge, max span 740m