inženjerski projektni zavod d.d. prilaz baruna filipovića...

More than 60 years of experience in infrastructure engineering design!

Inženjerski projektni zavod d.d.Prilaz baruna Filipovića 21, 10000 ZagrebPhone: 00385 1 3717 300Fax.: 00385 1 3717 309E-mail: [email protected]

7,200

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 Croatia 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

studies, conceptual designs, investment programmes, preliminary, main and capital investment designs, expert opinions and other pieces of technical documentation.

// Company Profile02 03

1993.

Vrbovec

Sv. Helena

Gornja Ploča

Gračac

IPZ has designed more than 50% or all roads and 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 of kilometres of water supply and sewer systems, hundreds of water tanks, etc.

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.


14.000.000.00 €

12.000.000.00 €

10.000.000.00 €

8.000.000.00 €

6.000.000.00 €

4.000.000.00 €

2.000.000.00 €

0.00 €

2000

2001

2002

2003

2004

2005

2006

2007

2008

2009

6.58

7.32

0,85

€

6.39

5.04

9,58

€

10.5

06.1

84,9

8 € 13

.520

.352

,80

€

10.9

18.2

37,7

4 €

12.3

06.3

66,1

5 €

11.9

48.0

54,2

7 €

11.1

31.1

72,2

2 €

12.1

97.5

07,0

4 €

11.8

31.4

64,7

8 €

In terms of results, human resources, technical equipment and implementation of cutting-edge approaches and solutions in design and supervision, IPZ is today a leading Croatian company for infrastructure engineering design. Our team of almost one hundred specialists, experts and other staff members represents our main value and IPZ is able to realize the most complex tasks in designing roads, bridges and water engineering facilities.

EMPLOYEES

INCOME

Production employees

90%

51

16 10

17

10%

Certified Engineers

Graduate Engineers

Civil Technicians

Draftsmen Other photocopier attendants, accounting, administration

Engineers-in-training

2000-2009 Annual

Revenues Review

Administrative employees

43%

8%


HEAD OF ROAD DEPARTMENT C-2

ASSOCIATE DESIGN ENGINEER

HEAD OF URBAN TRAFFIC DEPARTMENT

HEAD OF WATER ENGINEERING

DEPARTMENT V-1

HEAD OF BRIDGE DEPARTMENT M-3

HEAD OF WATER ENGINEERING

DEPARTMENT V-2

ACCOUNTING TECHNICAL SERVICES

MAINTENANCEHUMAN RESOURCES

GENERAL, ADMINISTRATIVE AND TECHNICAL SERVICES

RECORDS OFFICE



TECHNICIANCERTIFIED DESIGN

ENGINEER

DRAFTSMAN

BOARD OF DIRECTORS

MEMBER OF BOARD OF DIRECTORS

MEMBER OF BOARD OF DIRECTORS

PRESIDENT OF BOARD OF DIRECTORS

As an integral design unity we are organized in nine departments, as follows:

Three departments for road design

Two departments for bridge and engineering structures design

Two departments for water engineering facilities

One department for urban roads and

One department for general, administrative and technical services.

ORGANIZATION

HEAD OF BRIDGE DEPARTMENT M-2

CERTIFIED DESIGN ENGINEER





































TECHNICIAN

TECHNICIAN

TECHNICIAN

TECHNICIAN

TECHNICIAN

TECHNICIAN

TECHNICIAN

TECHNICIAN

TECHNICIAN

TECHNICIAN

TECHNICIAN

DRAFTSMAN

DRAFTSMAN

DRAFTSMAN

DRAFTSMAN

DRAFTSMAN

DRAFTSMAN

DRAFTSMAN

DRAFTSMAN

DRAFTSMAN

PARTNERS

Traffic signalling and road furniture designs.

Designs of electric power supply, illumination and all electrical and TC installations.

Topographic survey and land acquisition studies.

SOFISTIC Software RM Bridge V8i Software

// Company Profile

The organizational structure of our company is based on the specialized departments, whose specialist know-how is best manifested in teamwork and in the cooperation both within the company and with other companies. The solutions we in IPZ offer to our clients are based on our own experience and know-how and on the cooperation with our strategic partners and are therefore able to deliver complete and comprehensive designs.

In our work we are using the state-of-the-art equipment and software: for road design we use Plateia, CARD/1 and Vestra software and AutoCAD Civil3D tool for interactive modelling. Noise protection on the roads is designed in the SoundPLAN software. For design of water engineering facilities we use Hydra, Canalis, Aquaterra and WaterCAD programmes. For structural engineering we use structural analysis tools Sofistik, RM Bridge V8i, Allplan and SCIA. For reinforcement calculation and drawings we use ArmCAD and ArmCAD 2000.

09

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.

REDUCTION OF WIND SPEED BEHIND THE WINDBREAK


// Company Profile

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.

SUPERVISORY BOARD

BOARD OF DIRECTORS

Chairman

Member

Member

Member

Member

Josip Sekopet

Dragutin ©poljar

Damir Gracin

Stjepan ©torga

Ivan Dumbović

President of the Board of Directors

Member and Head of Road Department C-3

Member and Head of Construction Department M-2

Mario Erdelji

Irena Kršinić

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.

In short: IPZ has tradition, know-how, professional skills and state-of-the-art equipment, as well as ability and need to cooperate with high quality partners.

12 13

IPZ’s business activity mostly includes civil infrastructure engineering:

ROADS MotorwaysNational roads and lower rank roads

Intersections - Interregional intersections of two motorways or express roads

- Trumpet interchanges - Motorway entrance/exit

Toll Stations Closed Toll System

- Frontal

- On intersections

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

A1_Stretch of the Motorway around the City of Otočac

A5_Intersection Sredanci of roads A3 and A5

A6_Intersection Bosiljevo of roads A1 and A6 in hilly terrain A2_Intersection Krapina


Tunnels- Tunnels in unfavourable materials (pipe roof)

- Tunnels in stone material

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)

Roadside Service Facilities - Roadside rest areas including various facilities (gas station, car park, restaurant, motel)

Roadside Maintenance and Traffic Control Centre- Winter maintenance service- Remote traffic control

A1_Tunnel Plasina A1_Roadside rest area Dobra

A1_Roadside Maintenance and Traffic Control Centre ©ibenik

A3_Roadside rest area SpačvaA6_Tunnel VrataA3_Tunnel Levačica A2_Roadside Maintenance and Traffic Control Centre Varaždin


URBAN ROADS

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

BRIDGES AND VIADUCTS

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


Bridge over the Krka river at Skradin Gacka Bridge

Maslenica Bridge Viaduct Limska Draga

Most Slobode bridge in Zagreb Viaduct Dubračina in Crikvenica The bridge over the Sava River in Zagreb

Steel Bridges and ViaductsThe following pages show photographs of various systems of steel bridges.

Steel Arch bridges

Steel Girder bridges


Bridges and Viaducts of Reinforced Concrete 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 SUPERSTRUCTURESDevelopment of cross sectionUp until a few years ago almost all bridges and viaducts with standard span lengths in the motorway route were prefabricated bridge superstructures.Depending on the soil type their foundation was either shallow or drilled piles. The substructure is mostly entirely monolithic (only pier heads were sometimes constructed as semi-prefabricated). Bridge superstructures were always realized of prefabricated prestressed girders of reinforced concrete that were mostly erected by launching truss, rarely by cranes. The length of prefabricated girders ranged from 25 m to 40 m and span lengths of individual fields of such structures corresponded to the length of prefabricated girders. Span lengths of individual fields exceeding 50 m were reached only rarely, by construction

of cantilever overhangs on pier heads, into which the prefabricated girders were subsequently inserted. Initially only girders with I-shaped cross sections were used. Following the erection they were connected in the cross direction by in situ execution of joints in the upper chord level of prefabricated girders. The durability and the transversal rigidity of the integral superstructure constructed by such cross-connecting of prefabricated girders was insufficient. Transversal rigidity may be improved by subsequent implementation of rigid cross girders, but this design of structures was abandoned due to the fact that the durability of this type of connection is not satisfactory.

A significant improvement of durability has been achieved by construction of 20 - 25 cm thick slab of reinforced concrete above 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 dispositionIndividual fields of the so constructed superstructures were usually connected in longitudinal direction by continuity slabs providing continuity without expansion joints along the entire 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.

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.

Limitations of the application of prefabricated girders

DEVELOPMENT OF PREFABRICATED BRIDGE SUPERSTRUCTURES

Viaducts Osojnik and Severinske Drage Viaduct Stara Sušica

Bridge Dobra Viaduct Golubinjak Viaduct Vršci and tunnel Plasina


EXAMPLES OF LONGITUDINAL DISPOSITION

MONOLITHIC SUPERSTRUCTURESThe decreased share of price of human labour in the overall price of the structure is a result of modern technologies for construction of monolithic superstructures, in the first line the incremental launching method and construction on self-supporting floating scaffold. Considering the fact that the prices of the equipment for the above construction methods have dropped significantly, the construction of monolithic superstructures is able to compete with the technology of prefabricated girders. Our designs including construction on self-supporting floating scaffold were not realized; however, the incremental launching method was applied in the construction of many long and high bridges and viaducts.

Incremental Launching TechnologyStructures with span lengths ranging from 30 m to 50 m, their overall length ranging from 300 m to as much as 940 m and their construction was even less expensive then the construction with prefabricated elements would be. As a rule, the cost effectiveness of structures constructed by incremental launching method increases with increasing span lengths, whereby the spans of 50 m are standard and economical. The expense of procuring steel nose, launching presses and braking system is soon recovered through lower cost of construction. Structures realized by this method are exceptionally durable and the closed box beneath the deck slab is favourable in case of frost.

MONOLITHIC SUPERSTRUCTURES

EXAMPLES OF INCREMENTAL LAUNCHING

Viaduct Most Bajer

Viaduct Hreljin Viaduct Rašćane Viaduct Zečeve Drage


Designs under development and tender documents

Incremental launching method for composite superstructureMain 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.

01.

02.

03.

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 European corridor VC has been completed. Procedure for obtaining building permit is underway. The overall length of the bridge is 660 m and the main span is 130 m.

Cross section and longitudinal section of the bridge over the Sava river at Svilaj, on the European Corridor VC.

Elaboration of the conceptual design

of the bridge over the Sava river at Jarun Lake

Elaboration of the conceptual design of the bridge over the

Sava river at Bundek Lake

05.

04.


WATER ENGINEERING FACILITIES WATER SUPPLY SYSTEMS Intakes and water plants

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


WATER ENGINEERING FACILITIES WASTEWATER DISPOSAL AND RAINWATER

DRAINAGE SYSTEMS

Urban sewage disposal systemsSewage collection facilitiesPumping stations and pressure pipelinesWastewater Treatment PlantsOffshore 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


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