Inženjerski projektni zavod d.d. Prilaz baruna Filipovića 21, 10000 More than Phone: 00385 1 3717 300 60 years of experience Fax.: 00385 1 3717 309 E-mail: [email protected] in infrastructure engineering design! www.ipz.hr 02 // Company Profile 03

Inzenjerski projektni zavod is a company specialized in infrastructure engineering design and has been active in this field for over 60 years now. The Government of the Republic of has established IPZ in 1948 as a national company for development of all kinds of designs for roads, road structures and water engineering facilities.

Actively participating in the reconstruction of the country that has suffered huge destruction in the war and in the modernization of the traffic infrastructure in Croatia and in other countries of the former Yugoslavia, IPZ has over the period of sixty-two years developed more than 7,200 studies, conceptual designs, investment programmes, preliminary, main and capital investment designs, expert opinions and other pieces of technical documentation. 04 // Company Profile 05

IPZ has designed more than 50% or all roads and 1993. motorways in the Republic of Croatia, as well as the first motorway in the former Yugoslavia, several hundreds of bridges, many tunnels, several dozens of engineering structures, ranging from industrial plants to transformer stations, thousands Vrbovec of kilometres of water supply and sewer systems, hundreds of Sv. Helena water tanks, etc.

Gornja Ploča

Gračac An important date in the development of IPZ is the year 1993, when IPZ was privatized and transformed into a joint stock company owned by the former and present employees. Almost two decades of independent operation and growth in market conditions on both Croatian and international markets have confirmed the Company’s strength and vitality.

Motorways and national roads in Croatia constructed according to IPZ’s designs. 06 // Company Profile 07

2000-2009 Annual In terms of results, human resources, technical INCOME 14.000.000.00 51 Revenues Review equipment and implementation of cutting-edge approaches and solutions in design and supervision, 17 12.000.000.00

IPZ is today a leading Croatian company for 16 10 infrastructure engineering design. Our team of almost one hundred specialists, experts and other staff 10.000.000.00

members represents our main value and IPZ is able 13.520.352,80

to realize the most complex tasks in designing roads, 8.000.000.00 bridges and water engineering facilities. 12.306.366,15 11.948.054,27 12.197.507,04 EMPLOYEES Graduate Civil Draftsmen Other 6.000.000.00 10.918.237,74 10.506.184,98 11.831.464,78 Engineers Technicians photocopier 11.131.172,22 Production Administrative attendants, employees employees accounting, administration 4.000.000.00 43% 6.587.320,85

90% 6.395.049,58 2.000.000.00

8% 0.00

10% 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009

Certified Engineers- Engineers in-training // Company Profile 09

TECHNICIAN CERTIFIED DESIGN ENGINEER TECHNICIAN CERTIFIED DESIGN DRAFTSMAN HEAD OF ROAD ENGINEER TECHNICIAN DEPARTMENT C-1 CERTIFIED DESIGN DRAFTSMAN ENGINEER TECHNICIAN CERTIFIED DESIGN ENGINEER TECHNICIAN

CERTIFIED DESIGN ENGINEER ASSOCIATE DESIGN ENGINEER CERTIFIED DESIGN HEAD OF ROAD ENGINEER DEPARTMENT C-2 DRAFTSMAN CERTIFIED DESIGN ENGINEER DRAFTSMAN CERTIFIED DESIGN ENGINEER BOARD OF CERTIFIED DESIGN ENGINEER DIRECTORS ASSOCIATE DESIGN ENGINEER CERTIFIED DESIGN ENGINEER DRAFTSMAN MEMBER OF BOARD HEAD OF ROAD ASSOCIATE DEPARTMENT C-3 DESIGN ENGINEER OF DIRECTORS CERTIFIED DESIGN ENGINEER ASSOCIATE PARTNERS DESIGN ENGINEER CERTIFIED DESIGN ENGINEER The organizational structure of our company is based on the PRESIDENT OF BOARD CERTIFIED DESIGN Topographic survey OF DIRECTORS ENGINEER specialized departments, whose specialist know-how is best and land acquisition studies. TECHNICIAN CERTIFIED DESIGN ENGINEER manifested in teamwork and in the cooperation both within the

CERTIFIED DESIGN DRAFTSMAN ENGINEER company and with other companies. The solutions we in IPZ MEMBER OF BOARD HEAD OF BRIDGE Designs of electric power supply, DEPARTMENT M-2 illumination and all electrical OF DIRECTORS CERTIFIED DESIGN and TC installations. ENGINEER offer to our clients are based on our own experience and know- TECHNICIAN CERTIFIED DESIGN ENGINEER how and on the cooperation with our strategic partners and are

CERTIFIED DESIGN therefore able to deliver complete and comprehensive designs. ENGINEER Traffic signalling and road furniture designs.

CERTIFIED DESIGN ENGINEER ASSOCIATE DESIGN ENGINEER ORGANIZATION CERTIFIED DESIGN HEAD OF BRIDGE ENGINEER In our work we are using the state-of-the-art equipment and software: for road design we use Plateia, DRAFTSMAN DEPARTMENT M-3 CERTIFIED DESIGN As an integral design unity ENGINEER CARD/1 and Vestra software and AutoCAD Civil3D tool for interactive modelling. Noise protection we are organized in nine TECHNICIAN CERTIFIED DESIGN on the roads is designed in the SoundPLAN software. For design of water engineering facilities we use departments, as follows: ENGINEER Hydra, Canalis, Aquaterra and WaterCAD programmes. For structural engineering we use structural Three departments for road CERTIFIED DESIGN analysis tools Sofistik, RM Bridge V8i, Allplan and SCIA. For reinforcement calculation and drawings HEAD OF URBAN ENGINEER design TECHNICIAN DRAFTSMAN TRAFFIC DEPARTMENT CERTIFIED DESIGN we use ArmCAD and ArmCAD 2000. Two departments for bridge ENGINEER CERTIFIED DESIGN and engineering structures ENGINEER design TECHNICIAN CERTIFIED DESIGN CERTIFIED DESIGN HEAD OF WATER ENGINEER ENGINEER Two departments for water ENGINEERING DRAFTSMAN DEPARTMENT V-1 CERTIFIED DESIGN CERTIFIED DESIGN engineering facilities ENGINEER ENGINEER TECHNICIAN One department for urban CERTIFIED DESIGN ENGINEER roads and ASSOCIATE DESIGN ENGINEER One department for general, CERTIFIED DESIGN HEAD OF WATER ENGINEER administrative and technical ENGINEERING TECHNICIAN DRAFTSMAN services. DEPARTMENT V-2 CERTIFIED DESIGN ENGINEER ASSOCIATE DESIGN ENGINEER

GENERAL, SOFISTIC Software RM Bridge V8i Software ADMINISTRATIVE AND HUMAN TECHNICAL ACCOUNTING MAINTENANCE RECORDS TECHNICAL SERVICES RESOURCES SERVICES OFFICE 10 // Company Profile 11

REDUCTION OF WIND SPEED BEHIND THE WINDBREAK CORPORATE PRINCIPLES

The main guideline in IPZ’s business policy is to deliver economically and technically most efficient solutions at each level of client’s investment into respective projects. Such an approach can be applied only in highly professional working environment, with an encouraging working climate and strict quality compliance system.

The management system in IPZ has been harmonized with the provisions of management standards ISO 9001:2008.

ENVIRONMENTAL PROTECTION

Our quality system ensures a high quality of our work and harmonization of our activities and results with clients’ wishes and needs. In the elaboration of optimal economic and technical solutions special attention is paid to environmental issues. In this way IPZ is integrating all processes into coordinated results/designs aimed at meeting client’s needs both in terms of the quality of our services and of the impact of our solutions on the environment. 12 // Company Profile 13

OPERATIVE AND STRATEGIC MANAGEMENT

The shallow management structure of IPZ enables quick decision-making and flexible approach to work. The Management Board members are directors who are in direct contact with clients and have first-hand knowledge of clients’ needs. In the cooperation with department managers/team leaders they ensure that the wishes and needs of our clients are respected and met optimally.

Shareholders through their representatives in the Supervisory Board make the decisions on the strategic development of the company.

Chairman Josip Sekopet In short: IPZ has tradition, know-how, professional

Member Dragutin ©poljar skills and state-of-the-art equipment, as well as ability

SUPERVISORY BOARD Member Damir Gracin and need to cooperate with high quality partners.

Member Stjepan ©torga

Member Ivan Dumbović

President of the Board of Directors Mario Erdelji

BOARD OF Member and Head Irena Kršinić DIRECTORS of Road Department C-3 Member and Head of Construction Department M-2 Zoran Lončarec

IPZ has a rich experience in working with international partners and has both the required quality and the strength for international markets. We in IPZ are confident that in cooperation with strategic partner we can confirm our ability to perform the work we are entrusted with in line with the highest professional standards and client’s requests regarding deadlines and commercial terms. 14 // Company Profile 15

IPZ’s business activity mostly includes civil infrastructure engineering: Intersections Toll Stations - Interregional intersections of two Closed Toll System ROADS Motorways motorways or express roads - Frontal National roads and lower rank roads - Trumpet interchanges - Motorway entrance/exit - On intersections

A5_Intersection Sredanci of roads A3 and A5

A1_Stretch of the Motorway around the City of Otočac A6_Intersection Bosiljevo of roads and A6 in hilly terrain A2_Intersection Krapina

A6_Approach to the Tunnel Čardak A3_Detail of the road through the region of Slavonia A2_COKP (Roadside Maintenance and Traffic Control Centre) Krapina A3_Toll station in Intersection Županja 16 // Company Profile 17

Tunnels Roadside Service Facilities Roadside Maintenance - Tunnels in unfavourable materials (pipe roof) - Roadside rest areas including and Traffic Control Centre - Tunnels in stone material various facilities (gas station, car park, - Winter maintenance service restaurant, motel) - Remote traffic control

Tunnels designed by IPZ show the highest safety level in Europe and have been recognized as such:

In 2005 the Plasina Tunnel was classified as one of the safest in Europe according to ADAC requirements

In 2009 the Tuhobić Tunnel was classified as second best in Europe according to EUROTRAP (European Commission Programme)

A1_Roadside Maintenance and Traffic Control Centre ©ibenik

A1_Tunnel Plasina A1_Roadside rest area Dobra

A3_Tunnel Levačica A6_Tunnel Vrata A3_Roadside rest area Spačva A2_Roadside Maintenance and Traffic Control Centre Varaždin 18 // Company Profile 19

URBAN In order to avoid traffic jams in cramped spaces of dense development, urban roads must be BRIDGES AND VIADUCTS ROADS constructed as grade separated facilities with specific shapes of span structures.

The brief review of designed structures includes only major and important recent facilities. It is therefore that hundreds of culverts of underpasses, overpasses and minor bridges constructed in the road network of the Republic of Croatia were not included here. Our selection shows the development and acceptance of new technologies, aimed at reduction of construction and maintenance costs and at increased durability of structures, all in compliance with stricter EU regulations.

Most Mladosti bridge in Zagreb

Zagreb_Intersection Držićeva ulica/ Slavonska avenija Zagreb_Intersection Radnička cesta/ Slavonska avenija 20 // Company Profile 21

Steel Girder bridges Steel Bridges and Viaducts The following pages show photographs of various systems of steel bridges.

Steel Arch bridges

Maslenica Bridge Viaduct Limska Draga

Bridge over the Krka river at Skradin Gacka Bridge

Most Slobode bridge in Zagreb Viaduct Dubračina in Crikvenica The bridge over the Sava River in Zagreb 22 // Company Profile 23

DEVELOPMENT OF PREFABRICATED Bridges and Viaducts of Reinforced Concrete BRIDGE SUPERSTRUCTURES

The progress of construction technology is best shown in the review of bridges and viaducts of standard span lengths constructed of reinforced concrete - this can be observed primarily in the development of superstructure cross section, but also in the changes of the longitudinal disposition of the facility.

PREFABRICATED BRIDGE SUPERSTRUCTURES Development of cross section Up until a few years ago almost all bridges and viaducts of cantilever overhangs on pier heads, into which the with standard span lengths in the motorway route were prefabricated girders were subsequently inserted. prefabricated bridge superstructures. Initially only girders with I-shaped cross sections were Depending on the soil type their foundation was either used. Following the erection they were connected in the shallow or drilled piles. The substructure is mostly entirely cross direction by in situ execution of joints in the upper monolithic (only pier heads were sometimes constructed chord level of prefabricated girders. The durability and as semi-prefabricated). Bridge superstructures were the transversal rigidity of the integral superstructure always realized of prefabricated prestressed girders of reinforced concrete that were mostly erected by launching constructed by such cross-connecting of prefabricated truss, rarely by cranes. The length of prefabricated girders girders was insufficient. Transversal rigidity may be ranged from 25 m to 40 m and span lengths of individual improved by subsequent implementation of rigid cross fields of such structures corresponded to the length of girders, but this design of structures was abandoned due A significant improvement of durability has been achieved by prefabricated girders. Span lengths of individual fields to the fact that the durability of this type of connection is construction of 20 - 25 cm thick slab of reinforced concrete above exceeding 50 m were reached only rarely, by construction not satisfactory. the upper girder surface. The result was that the durability of the superstructure of prefabricated girders became closer to the durability of the monolithic superstructure. In instances where prefabricated girders were used whose chords were not touching after assembly, soft supported reinforced-concrete sacrifice formwork was used. Further development resulted in the advent of wide flange prefabricated I-girders whose upper chords were touching after the assembly, so that no formwork is necessary for concreting of the deck slab. The most recent guidelines exclude the formerly most commonly used I-girders and instead include the rarely used passable box girders and mostly used prefabricated T-girders.

Development of longitudinal disposition Individual fields of the so constructed superstructures were usually connected in longitudinal direction by continuity slabs providing continuity without expansion joints along the entire Viaducts Osojnik and Severinske Drage Viaduct Stara Sušica structure, even on structures with length exceeding 500 m. Continuity slabs provide driving comfort; they transmit horizontal forces, but do not transmit moments from one field to another. In terms of statics, such structures are composed of a series of simple grid structures. Through further development continuity slabs evolved into a strong transverse bond, whereby the entire superstructure became a continuous girder of a series of grid structures. Limitations of the application of prefabricated girders The above-described development resulted in significantly improved durability. Limitation factors of this technology are span lengths of individual fields – they are limited to maximally ca 40 m. Construction of larger spans is too expensive and thus not acceptable. In view of the increased labour price even the realization of standard span lengths becomes expensive due to the large share of labour price in the overall price of structures.

Bridge Dobra Viaduct Golubinjak Viaduct Vršci and tunnel Plasina 24 // Company Profile 25

MONOLITHIC SUPERSTRUCTURES

EXAMPLES OF INCREMENTAL LAUNCHING

EXAMPLES OF LONGITUDINAL DISPOSITION MONOLITHIC SUPERSTRUCTURES Incremental Launching Technology

The decreased share of price of human labour in the overall Structures with span lengths ranging from 30 m to 50 m, their price of the structure is a result of modern technologies overall length ranging from 300 m to as much as 940 m and their for construction of monolithic superstructures, in the first construction was even less expensive then the construction with line the incremental launching method and construction prefabricated elements would be. As a rule, the cost effectiveness on self-supporting floating scaffold. Considering the fact of structures constructed by incremental launching method that the prices of the equipment for the above construction increases with increasing span lengths, whereby the spans of 50 methods have dropped significantly, the construction of m are standard and economical. The expense of procuring steel monolithic superstructures is able to compete with the nose, launching presses and braking system is soon recovered technology of prefabricated girders. Our designs including through lower cost of construction. Structures realized by this construction on self-supporting floating scaffold were not method are exceptionally durable and the closed box beneath realized; however, the incremental launching method was the deck slab is favourable in case of frost. applied in the construction of many long and high bridges and viaducts.

Viaduct Most Bajer

Viaduct Hreljin Viaduct Rašćane Viaduct Zečeve Drage 26 // Company Profile 27

Designs under development and tender documents

01. Incremental launching method for composite superstructure Main design of composite structure has been designed that included incremental launching of the steel structure and subsequent construction of concrete deck slab on the floating scaffold for a viaduct with individual span lengths of 62.5 m and overall length of more than 900 m. This design has not yet been realized.

02. Double composite superstructure of the bridge over the river Sava on the corridor VC Main design of the continuous double composite girder bridge over the river Sava on the Elaboration of the European corridor VC has been completed. Procedure for obtaining building permit is conceptual design underway. The overall length of the bridge is 660 m and the main span is 130 m. of the bridge over the Sava river at Jarun Lake

03.

04. Elaboration of the conceptual design of the bridge over the Sava river at Bundek Lake

05.

Cross section and longitudinal section of the bridge over the Sava river at Svilaj, on the European Corridor VC. 28 // Company Profile 29

WATER SUPPLY SYSTEMS Intakes and water plants WATER ENGINEERING FACILITIES Potable water conditioning plants Water tanks Regional and interregional water supply systems Water supply networks and pipelines Submarine pipelines

Control room Portable water treatment plant 1,0 m3/s Pumping station intake

Submarine pipeline

Sedimentation tank Water tank Laying Pipe 30 // Company Profile 31

WATER ENGINEERING FACILITIES WASTEWATER DISPOSAL Urban sewage disposal systems AND RAINWATER Sewage collection facilities Pumping stations and DRAINAGE SYSTEMS pressure pipelines Wastewater Treatment Plants Offshore Outfalls

Wastewater treatment plant ES 1 200 000

Watercourse regulation along the motor way route

Treatment of rain water from the motor way Sea coast improvement Construction of collector