Consulting Engineers

Projects

Over the years we have undertaken a variety of projects around the globe, and have engaged in a variety of international partnerships to deliver cost-effective and innovative solutions worldwide, that would change the life of many people.
Through this time traveling has contributed to the successful completion of our projects, and has helped us understand the common problems of each society we were trying to help.
The interaction with our partners and the societies abroad keeps rewarding us with invaluable memories, a diverse work experience, fuels us with creativity, helps us build on our culture and keeps us motivated

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Water management study for the water supply network and leakage control of the city of hrakleio (phase b’)

Country: Greece
Client: Ministry of Public Works
Year: 2006 - 2010
Funding: European Commission / Cohesion Fund
Contract Value: 248,640.00 € (340,636.00 USD)
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Water management study for the water supply network and leakage control of the city of hrakleio (phase b’)

Country: Greece
Client: Ministry of Public Works
Year: 2006 - 2010
Funding: European Commission / Cohesion Fund
Contract Value: 248,640.00 € (340,636.00 USD)

The contract dealt with the phase B of water control study of the municipality of Heracleio and other municipalities in the area which are going to be supplied with water from Aposelemis Dam. Phase “B” focused in the developing of a control system for the better operation of the water network of the total city area and reduce leakage which was estimated to be in the area of 50%. The city of Heracleio has a population that exceeds 305,000 inhabitants. Services included all strategic and analytical models, maps and GIS information, proposals on a replacement program of old pipes and valves of the network, proposals on leakage detection processes and illegal connections tracking, proposals on network monitoring, etc.

Hydroelectric power plant (hpp) on river trikeriotis, prefecture of evrytania and on rivers alfios and lousios, prefecture of arcadia

Country: Greece
Client: IBERINCO S.A.
Year: 2006 - 2007
Funding: Private Investment Fund
Contract Value: 230,000.00 (310,500.00 USD)
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Hydroelectric power plant (hpp) on river trikeriotis, prefecture of evrytania and on rivers alfios and lousios, prefecture of arcadia

Country: Greece
Client: IBERINCO S.A.
Year: 2006 - 2007
Funding: Private Investment Fund
Contract Value: 230,000.00 (310,500.00 USD)

The scope of these studies were the preliminary engineering design of three Hydroelectric Power Projects (HPP), with small, 10 m high dams on rivers Lousios and Alfios, and on river Trikeriotis, in West Greece. The catchment area of Trikeriotis at Geroborou bridge was 436.20 km². In order to assure a safe operation and guaranteed energy production for the HPP, a “Tyrolean type” water intake was inevitably recommended. The project was designed with partially or totally visible (surface) works (intake structure, settling basin and forebay tank, by-pass channel, power house and draft tubes) and underground works (power tunnel and surge tank and penstock). The Alfios HPP project is located west of Karytena village and consisted of water intake structures, power tunnel, surge tank, penstock and power station, all of them situated on the left river bank. The Lousios project powerhouse is located 5,5 km SW of the village of Stemnitsa (Hypsous) along the secondary road from Vytina to Karytena and consisted of water intake structures, power tunnel, surge tank, penstock and power station.

Technical consultant for assistance of service in water supply of patra from rivers peiros and parapeiros, phase b’ – stage of construction

Country: Greece
Client: -
Year: 2006 - 2010
Funding: -
Contract Value: -
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Technical consultant for assistance of service in water supply of patra from rivers peiros and parapeiros, phase b’ – stage of construction

Country: Greece
Client: -
Year: 2006 - 2010
Funding: -
Contract Value: -

Technical Consultant for the assistance of Ministry of Public Works in the water supply project of Patra includes construction supervision of: 1) An earth fill dam, 77 m high, in river Parapeiros and relevant works (tunnels, spillway, etc.). Reservoir’s volume: 40.000.000 m3. 2) The concrete dam for the diversion of river Peiros to river Parapeiros and relevant works. 3) The water supply pipe (steel), 10 km long, 1200 mm diameter and the relevant works (pumping stations, buildings, etc.) 4) Water supply and distribution network, downstream of the dam with 80 km pipe, DN1000 mm diameter to transfer water to the city of Patra (detailed design, tender documentation, supervision of construction). 5) Water treatment plant with a capacity for 22,120 m³/day of drinking water.The dam will be used to supply drinking water at villages and small cities in Achaia Prefecture, including the city of Patra. The Consortium was responsible for the management of the construction of the system for the water supply of the greater area of Patra city (the 3rd largest city in Greece). The contract included the review of all the detailed design submitted by the Contractor. Specifically for the spillway (Q = 1700 m³/sec), a new design was executed by the Consultant. The scope of the Contract included also the on site supervision. A team of five on site engineers, geotechnical engineers and geologists was provided by the Consultant for all the duration of the construction.
Technical Consultant for the assistance of Ministry of Public Works in the water supply project of Patra includes construction supervision of: earth fill dam 77 m high, concrete dam for the diversion of river Peiros to river Parapeiros, water supply system 90km long, Water treatment plant with a capacity for 22,120 m³/day. A team of five on site engineers, geotechnical engineers and geologists was provided by the Consultant for all the duration of the construction.

Preliminary study for the potentiality of hydroelectric power plants construction in evros prefecture, thrace, north greece

Country: Greece
Client: -
Year: 2006 - 2006
Funding: -
Contract Value: -
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Preliminary study for the potentiality of hydroelectric power plants construction in evros prefecture, thrace, north greece

Country: Greece
Client: -
Year: 2006 - 2006
Funding: -
Contract Value: -

The project involved the feasibility study for the development of small hydroelectric plants in Evros prefecture and especially in the administrative boundaries of the municipalities of Didimoticho, Metaxades and Orfeos. The following criteria were assessed: (a) the surface of the dam’s lake, (b) the emerging hydraulic drop between abstraction and station, (c) the length of the pipeline transportation, (d) the installed capacity and produced energy, (e) the construction cost and (f) the environmental commitments. Eight (8) locations were identified which met the above criteria.All sites have been examined both with desk and field work and a feasibility study report was submitted to the Client.
The project involved the feasibility study for the development of small hydroelectric plants in Evros prefecture. The following criteria were assessed: the surface of the dam’s lake, the emerging hydraulic drop between abstraction and station, the length of the pipeline transportation, the installed capacity and produced energy, the construction cost and the environmental commitments. Eight (8) locations were identified which met the above criteria.

Consulting services for the unification of the water supply and sewerage councils in the cities of nicosia, limasol and larnaca (contract no: 19/2005)

Country: Cyprus
Client: -
Year: 2006 - 2008
Funding: -
Contract Value: -
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Consulting services for the unification of the water supply and sewerage councils in the cities of nicosia, limasol and larnaca (contract no: 19/2005)

Country: Cyprus
Client: -
Year: 2006 - 2008
Funding: -
Contract Value: -

Basic aim of the project/study is the creation of a single organism in Nicosia, Limasol and Larnaca which will provide the services of water supply and sewerage in the wider urban regions. The main objectives of the study included: 1) Study and analysis of: the structural and managerial status of each Council , the financial position/information and financial management of each Council, Human Resources issues , the existing organizational frame and labor regulations and procedures that are in effect and are applied, in each one of the six Councils, the legal framework governing each Council, the existing technical operation of each Council, 2) Preparation of proposals and reports concerning: the financial management , the organization structure , the new institutional frame and operation regulations, the final preliminary draft of the new legal framework , the technical operation of the unified Councils, the reconcilement to the technical and environmental requirements 3) Preparation of feasibility study for the estimation of profits/advantages/disadvantages 4) Examination of technical issues, human resources issues, financial issues and, finally, preparation of a draft law for the unification of the Councils as well as draft regulations for the operation of the new organizations.
Basic aim of the project is the creation of a single organism in Nicosia, Limasol and Larnaca which will provide the services of water supply and sewerage in the wider urban regions, including: analysis of the structural and managerial status, financial management, organization structure, new institutional frame and operation regulations, technical operation of the unified Councils, estimation of profits/advantages/disadvantages, human resources issues and financial issues.

Technical consultant for construction supervision of a system of water supply, sewerage and wwtp in eressos – antissa municipality, lesvos island

Country: Greece
Client: -
Year: 2005 - 2010
Funding: -
Contract Value: -
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Technical consultant for construction supervision of a system of water supply, sewerage and wwtp in eressos – antissa municipality, lesvos island

Country: Greece
Client: -
Year: 2005 - 2010
Funding: -
Contract Value: -

Eressos – Antissa Municipality is located in Lesvos Island, North Aegean Sea. The project concerned the construction supervision of water supply and distribution networks of eleven (11) villages of the Eressos – Antissa Municipality, along with the sewerage networks. Also it involved the study of six (6) waste-water treatment plants with the disposal pipelines. Since September 2005, Z&A acted as the Technical Consultant for Construction Supervision of this project. Project activities included: (a) Supervision of construction works on site, (b) Implementation of the project, (c) Technical Assistance to local Services on design, construction and financing issues, (d) Supervision of finance procedures from European Commission and (e) Technical Assistance on Contractor’s claims. The water supply transmission and distribution network was consisted of HDPE (3rd generation) pipes DN500 of approximate 64,230 m. The sewerage network was designed as HDPE (3rd generation) network of approximate 35,375 m pipes DN110 – DN250. The six (6) wastewater treatment plants (WWTP) were designed to serve approximate 8,600 PE.
Eressos – Antissa Municipality is located in Lesvos Island, North Aegean Sea. The project concerned the construction supervision of water supply and distribution networks of eleven (11) villages of the Eressos – Antissa Municipality and the respective sewerage networks along with six (6) WWTP with the disposal pipelines.

Determination of hydraulic characteristics of flood event on december 01, 2005 on metsovitikos river, epirus prefecture, north greece

Country: Greece
Client: -
Year: 2006 - 2006
Funding: -
Contract Value: -
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Determination of hydraulic characteristics of flood event on december 01, 2005 on metsovitikos river, epirus prefecture, north greece

Country: Greece
Client: -
Year: 2006 - 2006
Funding: -
Contract Value: -

This study was commissioned by the construction J/V of the Metsovitikos HEP in order to support a legal insurance claim after suffering damages on the J/V worksite and equipment following a flood event on Metsovitikos River on 1.12.2005. The study estimated the magnitude of the flood event and its frequency, based on available data. The flood peak rate was estimated with the slope-area method after surveying suitable cross-sections of the affected river reach. Local hydrometry data collected at the Meg. Peristeri gauging station was used in the assessment. The flood peak rate was determined to be 265 m³/s and the flood event return period as 25 – 30 years. The theoretical 20-yr flood event was calculated using soil cover and land use data on the catchment and via modeling with the SCS method. The storm design depth was adopted from the IDF relationship of the nearby Mik. Peristeri station. The calculation showed that even assuming very conservative values for the modeling parameters, the theoretical 20-yr flood event peak rate was lower than the estimated at-site, exceeding the limit which the client was insured against.
The study estimated the magnitude of the flood event and its frequency, based on available data. The flood peak rate was determined to be 265 m³/s and the flood event return period as 25 – 30 years. The calculations showed that even assuming very conservative values for the modeling parameters, the theoretical 20-yr flood event peak rate was lower than the estimated at-site, exceeding the limit which the client was insured against.

Technical consultant of ministry of public works for flood protection projects in several places inside greece territory.

Country: Greece
Client: -
Year: 2006 - 2009
Funding: -
Contract Value: -
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Technical consultant of ministry of public works for flood protection projects in several places inside greece territory.

Country: Greece
Client: -
Year: 2006 - 2009
Funding: -
Contract Value: -

Until today, there have been serious problems created by flooding. The prioritization of solutions was based primarily on the size of the problems that appear. Z&A through this study, developed flood management models which will provide a convenient tool for prioritization in particular as regards access to funding from E.U. resources. The project included the following: (a) selection of important streams to be included in the management plan, (b) appropriate mapping of relevant catchments, (c) description of the necessary studies for each stream (flood plain, hydraulic studies, etc). Registration of flood protection works or/and settlement in obstructing of streams and (d) proposals on necessary land use changes to achieve the flood protection goals. The projects that were supervised by Z&A were the following:1. “Stabilization of natural slopes and arrangement of river bed of Pamisos stream in Mouzaki Municipality, Karditsa Perfecture”, 2. “Arrangement works on Saint George stream of Dramiziotis river in Trikala Prefecture” 3. “Recreation and environmental protection of Dipotamia river in Kastoria Prefecture” 4. “Arrangement works on Baggo stream of Anthiriotis river in Karditsa Prefecture” 5. “Flood protection works on river Asopos in East Attica Prefecture”.
Z&A through this study, developed flood management models which will provide a convenient tool for prioritization in particular as regards access to funding from E.U. resources. The project included the following: (a) selection of important streams, (b) appropriate mapping of relevant catchments, (c) description of the necessary studies for each stream (flood plain, hydraulic studies, etc). Registration of flood protection works or/and settlement in obstructing of streams and (d) proposals on necessary land use changes to achieve the flood protection goals. The projects that were supervised by Z&A were the following:1. “Stabilization of natural slopes and arrangement of river bed of Pamisos stream in Mouzaki Municipality, Karditsa Perfecture”, 2. “Arrangement works on Saint George stream of Dramiziotis river in Trikala Prefecture” 3. “Recreation and environmental protection of Dipotamia river in Kastoria Prefecture” 4. “Arrangement works on Baggo stream of Anthiriotis river in Karditsa Prefecture” 5. “Flood protection works on river Asopos in East Attica Prefecture”.

Detailed design of works necessary for the environmental protection of kotychi lagoon, elia prefecture, peloponesse, south greece

Country: Greece
Client: -
Year: 2006 - 2006
Funding: -
Contract Value: -
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Detailed design of works necessary for the environmental protection of kotychi lagoon, elia prefecture, peloponesse, south greece

Country: Greece
Client: -
Year: 2006 - 2006
Funding: -
Contract Value: -

Soil loss using RUSLE from the Kotychi basin was estimated using GIS software resulting in a spatial representation which enabled targeting of particular streams and areas of high contribution to the lagoon’s sedimentation problem. The targeting of areas informed the design of specific hydraulic works to allow the diversion of freshwater into the lagoon during low flows while at the same time diverting away sediment-laden floodwaters during the rainy season. This arrangement helps in the management of the lagoon’s salinity levels and at the same time provides relief from excessive sedimentation.
The main objective was to protect the lagoon from sedimentation. Soil loss using RUSLE from the Kotychi basin was estimated using GIS software resulting in a spatial representation defining areas of high contribution to the lagoon’s sedimentation problem. Specific hydraulic works were designed to allow the diversion of freshwater into the lagoon during low flows while at the same time diverting away sediment-laden floodwaters during the rainy season.

Water resources management of acheloos river and modifications of the enviromental impact assesement study for the diversion of the river

Country: Greece
Client: -
Year: 2006 - 2006
Funding: -
Contract Value: -
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Water resources management of acheloos river and modifications of the enviromental impact assesement study for the diversion of the river

Country: Greece
Client: -
Year: 2006 - 2006
Funding: -
Contract Value: -

The study was carried out in four (4) parts as follows: Part A: “Water Potential” examines the natural availability of water in the Acheloos river basin, Part B: “Water Needs” examines water demand from domestic water supply, irrigation, industry and livestock as well as tourism demand. Also the future demand was assessed based on proposed projects and future development. Part C: “Environmental Issues” where the environmental impacts of the Acheloos diversion were analysed and Part D: “Management Model”, where a water management model was configured and calibrated and used to assess the water resource system under different scenarios of water use. The project aims at integrated water resources management of the area of interest and the development of the appropriate management tools. It was elaborated in order to assist the Ministry of Public Works in the implementation of the Water Framework Directive (2000/60). The project includes the following 1) Collection of all the relevant information, 2) Development of an integrated database and presentation of all the relevant data on maps (GIS), 3) Recording of all activities related to water use, 4) Water Demand assessments, 5) Use of simulation software, 6) Analysis of developing projects in the greater area 7) Development of a management model, 8) Gathering of economic information, 9) Development and evaluation of an Economic Model.
The project aims at integrated water resources management of the area of interest and the development of the appropriate management tools in order to assist the Ministry of Public Works in the implementation of the Water Framework Directive (2000/60). The project includes the following: data collection, development of GIS, water demand assessment, modeling, economic analysis, proposed projects.

Detailed design study for the allignment and regulation of the pikrodafni stream, agios dimitrios municipality, athens, greece

Country: Greece
Client: -
Year: 2004 - 2009
Funding: -
Contract Value: -
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Detailed design study for the allignment and regulation of the pikrodafni stream, agios dimitrios municipality, athens, greece

Country: Greece
Client: -
Year: 2004 - 2009
Funding: -
Contract Value: -

This study concerned the detailed design for the arrangement of the Pikrodafni stream from Ag. Dimitriou Avenue to Vouliagmenis Avenue (1.813 m long).
This study concerned the detailed design for the realignment of the Pikrodafni stream from Ag. Dimitriou Avenue to Vouliagmenis Avenue (1.813 m long).

Feasibility, preliminary and detailed design study on the transport and distribution of water from river nestos to the plains xanthi and komotini

Country: Greece
Client: -
Year: 2004 - 2008
Funding: -
Contract Value: -
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Feasibility, preliminary and detailed design study on the transport and distribution of water from river nestos to the plains xanthi and komotini

Country: Greece
Client: -
Year: 2004 - 2008
Funding: -
Contract Value: -

The scope of the project is the management of the water resources of the Nestos River catchment. The target is to transfer and distribute irrigation water using the available surface waters and protect the underground resources. The WRM study collected all the available water data to establish the water balance of Nestos river catchment and determine the available quantities for irrigation, hydropower generation and environmental flow requirements. The feasibility study involved a total area of more than 100,000 ha and included also the feasibility design of four dams. Following the above proposals, the Ministry assigned the preliminary design of the water supply and distribution network for the irrigation of Xanthi plain from Nestos river. The total length of the water supply system was approximately 155 km with diameters from D2000 to D400. The area under study was approximately 30,500 ha. Following the preliminary design for the total network of the Xanthi plain irrigation scheme, the Ministry assigned the detailed design of the water supply system for the irrigation of approximately 5,730 ha. The distribution network was also designed.
The scope of the project is the management of the ground water in the valleys of Ksanthi and Komotini by using the water from Nestos River. All required quantities for irrigation, hydropower and environmental flow were estimated. The feasibility study involved a total area of 100,000 ha, 30,000ha in Ksanthi and included also the feasibility design of four dams. The preliminary and the detailed design of the water supply and distribution network for the irrigation of Xanthi plain covered 5,730 ha.

Completion of hydraulic studies in the new high speed railway line between towns kiato and patra, peloponnese, greece (i.d. 440)

Country: Greece
Client: -
Year: 2004 - 2009
Funding: -
Contract Value: -
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Completion of hydraulic studies in the new high speed railway line between towns kiato and patra, peloponnese, greece (i.d. 440)

Country: Greece
Client: -
Year: 2004 - 2009
Funding: -
Contract Value: -

The detailed design of the water drainage system of the railway line , along with the service road drainage system, the flood protection system from surrounding catchment areas with the necessary hydraulic structures (ditches, culverts, etc). The contract also involved the restoration of the existing irrigation networks. All the above studies were applied to sections from STA. 0+000 to STA. 20+000, STA. 40+000 to STA. 92+500 and STA. 111+500 to STA. 113+000 of the new railway line.
The detailed design of the water drainage system of the railway line, along with the service road drainage system, the flood protection system from surrounding catchment areas with the necessary hydraulic structures (ditches, culverts, etc). The contract also involved the restoration of the existing irrigation networks. All the above studies were applied to sections from STA. 0+000 to STA. 20+000, STA. 40+000 to STA. 92+500 and STA. 111+500 to STA. 113+000 of the new railway line.

Detailed design of a wwtp installation in sarakakis industrial area

Country: Greece
Client: -
Year: 2004 - 2004
Funding: -
Contract Value: -
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Detailed design of a wwtp installation in sarakakis industrial area

Country: Greece
Client: -
Year: 2004 - 2004
Funding: -
Contract Value: -

A separate WWTP installation for disposal and treatment of industrial waste water was designed at the Sarakakis Industrial Area, in Athens.The object of this study involved full hydraulic and structural analysis, calculations, the relevant geotechnical study, the detailed design of the WWTP and preparation of the tender documents. Construction supervision was implemented through out the total construction period and after the completion of the project, initial testing was carried on. WWTP installation was implemented at the backside of the main building of Sarakakis Bro. S.A. and designed to accommodate the higher organic strength and solids content in the water. The installation was designed to serve the 650 employees of the company, one truck painting factory and one truck repair workshop.
A separate WWTP installation for disposal and treatment of industrial waste water was designed at the Sarakakis Industrial Area, in Athens.The object of this study involved full hydraulic and structural analysis, calculations, the relevant geotechnical study, the detailed design of the WWTP and preparation of the tender documents. Construction supervision was implemented through out the total construction period and after the completion of the project, initial testing was carried on.

Technical consultant for assistance of service in the planning, studies and construction of works for water supply of athens and other works

Country: Greece
Client: -
Year: 2004 - 2010
Funding: -
Contract Value: -
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Technical consultant for assistance of service in the planning, studies and construction of works for water supply of athens and other works

Country: Greece
Client: -
Year: 2004 - 2010
Funding: -
Contract Value: -

The contract involved the following studies and services for the water supply modernization of Athens network: 1) Increase the technical and institutional capacity of the Client in managing the water supply system of the greater Athens area, consisting of an aqueduct of about 300 km long, 2) Upgrading, modeling and redesigning of the Unified Aqueduct of Athens, 3) Development of the Water Supply Master Plan of the Greater Area of Athens 4) Feasibility study for the completion of the aqueduct Marathona – Yliki – Mornos (section Klidi – Dafnoula), 5) Feasibility study for the additional aqueduct from the exit of Kithaironas tunnel up to Acharnes D2000, 6) Completion of the detailed study of the last part of the repaired chlorination aqueduct in Helidonou area and construction of new bypass, 7) Feasibility study for the construction of a chlorination reservoir and a pumping station for water transfer from lake Marathonas in the region Helidonous, Acharnes, Athens, 8) Water Resources Management study for the Evinos river basin and for the total area of Etoloakarnania Prefecture and Water Resources Management study for Mornos river basin and for the total area of Fokida Prefecture,9) Environmental studies for all the above and hygiene education training programs for the Service.
The contract provided technical assistant to the client regarding the water supply of greater Athens area, about 300 km long. During the services the following activities were conducted: Water Supply Master Plan and Model, feasibility study and detailed design of several subsystems of the network, Water Resources Management study of Etoloakarnania and Fokida Prefectures, Environmental studies and hygiene education training programs for the Service, increase the institutional capacity of the Client.

Development of system and tools for water resources management of the water districts of attiki, sterea ellada, epirous and thessalia districts

Country: Greece
Client: -
Year: 2003 - 2008
Funding: -
Contract Value: -
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Development of system and tools for water resources management of the water districts of attiki, sterea ellada, epirous and thessalia districts

Country: Greece
Client: -
Year: 2003 - 2008
Funding: -
Contract Value: -

The project aims at integrated water resources management of the area of interest and the development of the appropriate management tools. It is elaborated in order to assist the Ministry of Development in the implementation of the Water Framework Directive (2000/60). The project includes the following: a. Collection of all the relevant environmental, hydrological and hydro geological information, b. Development of an integrated database and the presentation of all the relevant data in maps (GIS),c. Recording of all activities related to water use d. Use of simulation software (MIKE BASIN & MIKE SHE), e. Water demand assessments and management,f. Analysis of developing projects in the greater area and determination of current and future needs g. Development of a management model and its application to the specific River Basin District, h. Gathering of economic information related to developing activities in the area,i. Development and evaluation of an Economic Model, j. Development and evaluation of transboundary river basin development projects for Aoos and Drinos rivers along the borders with Albania, k. Dissemination actions: workshops, training courses, internet site, documentation, manuals and capacity building, awareness creation, education courses and training on water saving methods.
The project aims at integrated water resources management of the area of interest and the development of the appropriate management tools. It is elaborated in order to assist the Ministry of Development in the implementation of the Water Framework Directive (2000/60). The project includes the following: data collection, GIS development, recording of all water use activities, water demand assessments, developing of a model, economic assessment, river basin development projects etc

Hydroplan e.u.

Country: Greece
Client: -
Year: 2003 - 2006
Funding: -
Contract Value: -
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Hydroplan e.u.

Country: Greece
Client: -
Year: 2003 - 2006
Funding: -
Contract Value: -

The global objective of the project is to demonstrate and disseminate a European knowledge management framework, for a procedure (HYDROPLAN) on sustainable asset management with integrated links to best available technologies. The target is to provide a comprehensive framework tool to share knowledge and collaborate in the development of best management practices and technologies. These practices will then be taken into consideration for pragmatic, cost effective and objective master planning decisions in the European sewerage sector.In Greece the life cases were in Athens (EYDAP) and Thessalonica (EYATH) where the HYDROPLAN methodology was implemented. The objective is to develop an advanced management tool, which will be used in order to take cost effective and pragmatic decisions for the network of the pilot area. With the use of the management tool the Sewer Authorities are planning to improve the functionality of the network and program future investments with the best cost effective way.
The global objective of the project is to demonstrate and disseminate a European knowledge management framework, for a procedure (HYDROPLAN) with integrated links to best available technologies. In Greece the pilot cases were in Athens (EYDAP) and Thessalonica (EYATH). The objective of this assignment is to develop an advanced management tool to be used to cost effective and pragmatic decisions for the network and help the Authorities to program the future investments.

Detailed design for re-establishment of problematic sections of national road tripoli – kalamata, peloponnese, greece (sta. 9+600 to sta. 15+000)

Country: Greece
Client: -
Year: 2004 - 2005
Funding: -
Contract Value: -
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Detailed design for re-establishment of problematic sections of national road tripoli – kalamata, peloponnese, greece (sta. 9+600 to sta. 15+000)

Country: Greece
Client: -
Year: 2004 - 2005
Funding: -
Contract Value: -

The project involed the design of the water drainage system of the part of the new national road to Tsakona that was redesigned after the geological and geotechnical failure that caused the closure of the road. The new design of the road was altered involving a new tunnel and a valley bridge. Z&A was responsible for the hydraulic design of the project which included the water drainage system of the road and the storm water sewerage to prevent flooding from upstream catchments along with the design of the necessary hydraulic structures (ditches, culverts, etc).
The project involed the design of the water drainage system of the new national road to Tsakona that was redesigned after the geological and geotechnical failure that caused the closure of the road. The new design of the road was altered involving a new tunnel and a valley bridge. The hydraulic design of the project included the water drainage system of the road and the storm water network.

Water management study for the water supply network and leakage control of the city of hrakleio (phase a’)

Country: Greece
Client: -
Year: 2003 - 2005
Funding: -
Contract Value: -
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Water management study for the water supply network and leakage control of the city of hrakleio (phase a’)

Country: Greece
Client: -
Year: 2003 - 2005
Funding: -
Contract Value: -

Hrakleio is a city located in Crete island with a population of 305,000 people. DEYAI is the public (municipal) organization responsible for the water distribution and the sewerage networks of the greater Iraklio area. The main task of the project was the improvement of the financial and operational performance of the organization, especially concerning the department of the organization that is responsible for the water distribution networks. Detailed analysis and technical assistance were provided in terms of improving the management and business administration of DEYAI including advanced organization charts, implementation of new technology, human resources reformations, financial plans etc. Also technical assistance was provided including diagnostic assessment of the water distribution network, development of a full GIS with all the appropriate databases and development of detailed hydraulic models for the entire network. Finally technical assistance was provided concerning the adaptation of new technologies (new software and hardware, pipe detectors, leakage control instruments, SCADA systems, etc.) for improving the operation and control of the water distribution networks, including all the appropriate training of the employees.
The main task of the project was the assessment of the distribution network, development of a full GIS and development of detailed hydraulic models for the entire network of the city. Additionally technical assistance was provided concerning the adaptation of new technologies (new software and hardware, pipe detectors, leakage control instruments, SCADA systems, etc.) for improving the operation and control of the system, including all required training of the employees.

Detailed design for the drainage of venetikos tunnel, egnatia motorway, grevena prefecture, west macedonia, north greece

Country: Greece
Client: -
Year: 2003 - 2004
Funding: -
Contract Value: -
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Detailed design for the drainage of venetikos tunnel, egnatia motorway, grevena prefecture, west macedonia, north greece

Country: Greece
Client: -
Year: 2003 - 2004
Funding: -
Contract Value: -

The diverse terrain crossed by the Egnatia Motorway together with the special environmental conditions encountered imposed the construction (provision for) 73 twin-bore road tunnels of an overall combined length of 100km (measured as single carriageway) measured at 50km of single carriageway. Veneticos tunnel was a 700 m long double bored tunnel lying immediate afterwards the Veneticos Bridge. The hydraulic design included the following: (a) surface road drainage and (b) drainage system to prevent flooding from upstream catchment areas along with the design of the necessary hydraulic structures (ditches, culverts, etc).
Veneticos tunnel was a 700 m long double bored tunnel lying immediate afterwards the Veneticos Bridge. The hydraulic design included the following: (a)water drainage system of the Venetikos tunnel (b) drainage system to prevent flooding from upstream catchment areas along with the design of the necessary hydraulic structures (ditches, culverts, etc).