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Brief Profile:

Paul Chatzigrigoriou entered the five (5) year duration Polytechnic School in 1993 (second in order) and graduated in 1998. From 1998


to 2000 he was in service for the Greek Army. The 7.1R. earthquake


in Athens in 1999, was the reason that the army recruited him to assess the pathology and the danger of greek military buildings in

Athens. There he studies and records seven (7) camp buildings and the building of the military law school. In 2000 he was given the honors diploma for good service, by the greek army.

In 2001 he founds the technical office “Vesta Engineering”, with two employees. He starts working in a restoration project and at the same time he was accepted to MSc (2 years course) on Conservation, Restoration & Protection of monuments and historic cities in school of Architecture in Thessaloniki (A.U.Th.).

In 2002 he graduates the MSc (with grade 9.00/10.00) and he follows the opportunity for a position in the Historic City of Hermoupolis, in Cycladic island of Syros. There, he was immediately in charge of four major projects: The Urban Planning of the historic city of Hermoupolis, the reconstruction of a primary school, the construction of a suburban road over a water stream and the designing of a Stadium for 3.000 spectators.

At the same time he starts a PhD in National Technical University of Athens, developing a multi-criteria model for management of the Historic Centre of Hermoupolis. The research started in order to cover the need of conservation and advancement of historic buildings.

In 2009 after a successful career in Project Management, he was promoted as Head of the department of Planning and Development of the City of Hermoupolis. In 2010 the Municipality was merged with two other municipalities in the island and the department of Planning and Development was in charge for the merging plan. In 2011 the new Municipality of Syros-Hermoupolis, was funded with 3.220.000 euros after a project (proposed and developed by the Planning Department) to E.U.Fund.

In 2012 he finished his dissertation, and at the same time his second MSc in Environmental Planning. He is now Head of the Department of Planning and I.T. in Municipality of Syros-Hermoupolis.

In October 2013 he presented his PhD research in a big International event “Digital Heritage 2013” in Marseille, Cultural Capital of Europe 2013. His paper was awarded with “Best Paper Award” between 350 presentations.

Since September 2013 Pavlos is in charge of the bigger project ever run in Syros, the “2021 Cultural Capital of Europe” proposal.

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“I have successfully organized and managed three scientific seminars (duration

one week each) and a Festival Laboratory for Sustainable Culture.” “In October 2013, in Marseille (Cultural Capital of Europe), I presented a full paper of my scientific research, in “Digital Heritage Conference” “I am an expert AutoCAD user (2D and 3D), GIS ESRI and MAPINFO user. I have basic Visual-Basic knowledge, SPSS, MS Office, Access, MS Project, Primavera and I am a MAC OS user. I am really a fast learner on any software or IT. “

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Environmental Planning Environmental interventions to an existing school yard

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The municipality asked for environmental interventions to an existing school yard in order to develop a friendly to the environment space but also a functional yard for the kids. The approach was holistic. First a study was conducted examining the various activities and needs of the pupils. Then I studied the bioclimatic issues of the yard and spotted the problems. At the end, the surrounding area was analyzed and the spatial relation between the school and the neighbourhood was studied. The school had an old tower-clock in the yard were pupils usually play and gather The front yard was a huge, not organized, area for break time There wasn’t any plants or trees in the front yard The big veranda of the building was not in use The kids couldn’t sit anywhere in the yard

After studying the sun and the shadows on the yard, in 21 of June and 21 of December, the wind flow and the climate in the area of the school yard, conducted a new proposal for the school including: a small open greek theater near the tower clock, trees and various plants, an open cafeteria with tables and chairs on the veranda, open organized space for traditional games. Also, demolishing an abandoned building near the school yard was proposed, in order to create an open space for planting. In that space, a small greenhouse will provide education on planting and harvesting but also healthy vegetables for the kids.

Environmental Planning Environmental

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interventions to an existing school building


The municipality asked for environmental interventions to an existing school building in order to reduce the oil and electricity energy consumption and utilization of solar and wind energy. The approach was again holistic. First a study was conducted examining the various activities and needs of the pupils, using a questionnaire addressed to kids and teachers. Second step was spotting the bioclimatic issues of the building. At the end, the surrounding area was analyzed (microclimate, buildings, yard, solar light, wind flows etc)

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Proposal Taking under consideration the depth of the natural light in the classroom, proposed a sunshade in front of every window, in order to reduce the heat during spring/summer. Also, a solar chimney, alternating the central staircase, can reduce the need for heating during winter and cooling during summer.

Environmental Planning Environmental proposal for an existing central pedestrian street The municipality asked for environmental interventions to an existing pedestrian street in the center of the historic city. The way the different pedestrians walk and move in the city center was studied. Then sketched a 3D modeling of the street with the wind and the sun flow. The primary problem were the lack of shadow during summer in combination with the white marbles (extra light). People didn’t use the pedestrian street because of this microclimate.

Proposal Having in mind the above mentioned

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problems, the proposal had the following ideas: With a tradition way, proposed a number of sunshades with local flowers like Bucamvilia. Also, a lot of aromatic plants were planted in the street, creating an aromatic walk through the city.

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* Designing and Proposing an “Environmental Research Centre� in Syros

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Environmental Planning Environmental interventions to main square of Hermoupolis

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The square is divided in three (3) different zones:


Zone (A) with a lot of trees, vegetation and water element. In this zone we are using the main staircase of the historic municipality building as Îą theatrical stage for shows


Zone (B) is a huge pedestrian walking zone, free of obstacles, in order to let children play, run, bike.


Zone (C), is a covered area used by coffee shops for people to sit and relax.

! ! ! Environmental Urban Planning Analyzing environmental aspects of the city and its buildings is “step one� in Urban Planning. In this study, all the wind flows, the clime and the natural environment of this historic city are analyzed. Then the buildings behaviour, materials and construction methods are recorded and cataloged. The various details and conclusions were discussed with the team, in order to continue to phase B in Urban Planning of the Historic City of Hermoupolis

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Urban Planning



Analysing space consumption using G.I.S.

1. Building a GIS map Using ArcGIS by ESRI, a map is created with an ortho satellite image of 2010

2. Digitising and aerial photo An air photo of 1945, shotted by German army, is inserted in GIS. Then with tools, the air photo is redacted to fit the current satellite image.

3. Digitising space In both cases (1945 & 2010) the open space is measured and digitized.


The tool is used to calculate the space consumption rate in the Historic City.




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Buildings are pushing the Free Spaces of the City. In 60 years, the buildings are doubled but the population is the same. Are we using “space� correctly?


Urban Planning

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Urban Plan for an old Army Camp


1. Studying the area First step was to study the area. Surveying the area, recording old buildings and assessing the natural environment helped to start planning.


2. Proposing a new urban plan With the conclusions of phase one, a new plan was proposed. Using the urban standards for the area and protecting the natural environment were essentials for the plan that I proposed. A new botanic park will be created inside the area and the local University will use the existing buildings after the restoration. Part of the area will host the New Municipality Stadium.

Urban Planning Urban Plan for the historic center of Hermoupolis


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One of the most important projects in the island. A proposal of the our department that is financed by EU funds, with 3.000.000 euros. It includes 18 different sub-projects all of them in restoration, conservation and protection of the city’s physiognomy. Environmental planning is a major factor in this project. For the first time in history, the city will have bicycle lanes, a pedestrian network and outside the city parkings. Open spaces are developing to real action and entertainment hot spots, and kids will find at least three different areas for playing.

Planning and constructing a two way road near a water stream

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1. The challenge

An existing water stream at the end of the city, was the only open space in order to connect the two cities in the island: Ano Syros and Hermoupolis.

The challenge was the construction of a safe road, without changing the habitat and in respect with the natural and architectural environment.


2. The old hammam

During the surveying and planning, an old monument from 16th century was discovered. The old Hammam (steam bath) changed the plans in order to keep safe distance from it.


3. The construction

The construction phase was not easy. Seven meters high concrete walls were constructed, the water stream slightly changed direction and at the end 2.000 m3 ground was used to fill the concrete box of the road, compressed with care. At the end, external stone walls (using local stones that were excavated) were built for 1.000 meters length and 7 meters high.

Planning a Stadium for 3.000 spectators

Study & Design


1. The challenge

The challenge was the construction of a stadium, capable for hosting international sports events, with 3.000 spectators. In a dense urban plan, finding and using an open space for this purpose, was a challenge on its own.


2. The old Army Camp

An old army camp had the open space but fitting the stadium in this space was not easy. The stage for the spectators curved slightly in order to maximize the viewing field for the spectators.


3. The Planning

The stadium was planned with the Olympic Standards.

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Planning and supervising the construction of a cultural rout

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4 km length, inside the historic center of the city. A cultural rout, passing by important factories, old historic houses, view points and the most important historic cemetery in Greece.


Planning and supervising the restoration of an existing open space


An open space inside the Sport Center of the city, was restored and a conservation of the existing materials took place. We created new resting points, relaxing areas and activities fro kids inside the S.C.

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Conservation of Historic Buildings using DBMS and GIS

The case of Hermoupolis

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The purpose of the present research is to articulate a strategic approach for the protection, preservation and restoration of a historic building stock. Within this frame, a multivariable model has been developed for the assessment and monitoring of historic building’s pathology and architectural quality. The system is based on two pillars: the Database System (DBMS “Hermes”) and the Geographical Information System (GIS “Hermes”), which are

Part of a GIS map and example of implementation. Of the total 924 historic buildings, the 160 buildings at risk of collapse are selected by the system. The algorithm that was developed, rates with technocratic, architectural and social criteria these buildings. The buildings that are rated the highest, are included in the financial planning of the municipality for restore interventions. The first implementation gave encouraging results with minimal cost (5-10000 euro / building). Today, the city continues to make rescue (reversible) interventions.

addressed the concern and for reliability and objectivity of the data, with the development of two specific internal control procedures. The second pillar (GIS “Hermes”) enables spatial search across historic buildings. In this way, one can use different variables and criteria for composing complex questions. An important question is the ranking of dangerous buildings, reliably and objectively, in order to make the necessary lifesaving innervations. This multi criteria decision-making tool depends on the weight of different variables. After identifying these variables, a team of expert was asked to rank them with an online questionnaire. The resulting ranking was used to weight and assess the risk of the dangerous buildings.

Why is this important?

With economic crisis, especially in Greece, thousands of monuments are in danger in lack of any kind of restoration. Having limited budget in the City, making smart, cheap and efficient restorations will save historic buildings life.

That’s why this research is so important.

interconnected. The first pillar

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Introduction to main Research

One can take great pleasure in observing a city. This is the pleasure where an essential part of the industry of tourism is based upon. All cities may be characterized as large scale “works of art”. However, this kind of art has a temporary nature, it cannot be controlled and does not progress in the rhythm that other form of arts can, such as music for example. In the course of time, various people may experience a city in totally different ways. Ingold, professor of Anthropology in the University of Aberdeen mentions in his book “The Perception of the Environment: Essays in livelihood, dwelling and skill” that “building is a constantly continuing process, for as long as people inhabit a certain space. It doesn’t have a clear starting point based on a design that we have previously fashioned and it doesn’t conclude in a ready object. The “final form” is only momentary….” (Ingold, 2000). Since human beings reside in a city only for a really brief period of time compared to the lifespan of the city itself, they should not impose predetermined schemes on it and its environment, rather, they should integrate to the city, develop it according to the environment’s demands and inherit it to succeeding inhabitants. Buildings express the society and people that constructed them. They are testimonies of the cultural and social changes; the way and the time that buildings were designed, constructed, used, abandoned and ultimately destroyed indicate the prime and decline of a society. In that sense, the conservation of buildings as part of the cultural inheritance of a place is of crucial importance because it helps us arrive to many conclusions about the development of our civilization. Every facet of human activity has its monuments charging them with important historical memories. Therefore, monuments may appear as formations in time (buildings, cities, natural elements, or even music works), as points of reference (e.g. March 25th, 1821), or even as prescribed behaviours (e.g. the New Year’s Gala in Vienna). However, when it comes to structured environments, a monument has an even more essential role, which is to stimulate people’s memory and to function as a connecting link between the past and the future. Indeed, this role is dual, since the monument provides answers to problems of the present, while retaining the memories of the past. When the monument is placed in an urban area, it charges memories, excites imagination, and creates a certain mindset to human beings (Stefanou, 1985), (Papalexopoulos et al., 2002). The monument as a work of art is perceptible only in a specific cultural milieu, not everywhere and always, and certainly not by everybody. Heidegger uses the word “Bewahrung”, which means “conservation”, but shares the same root with the word “Warheit”, which means “truth”, denoting in the term conservation the conservation of the “truth” of the monument (Lefas, 2008). Buildings have their own circle of life; they get older, have their own pathology, are restored (sometimes poorly), abandoned and ultimately-at the end of their life- they collapse (Brand, 1995).

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Buildings have three different ages: The age based on the date they were built, the age based on their materials condition and the age based on economic and service factors (Levy and Salvadori, 2002). The ageing/deterioration process of buildings is a complicated procedure where a lot of research is taking place. Samuel Harris in his book “Buildings Pathology” (pages 16-23) in order to describe the deterioration mechanism, is viewing the building as an energy model and the he uses the Second Law of Thermodynamics: Energy flows from higher (ordered) state to a lower (random) state, increasing its “entropy”. Keeping in mind the First Law of Thermodynamics (the building is a “closed” energy system), Harris is proposing that the deterioration mechanism is inherently an exothermic process and the deterioration is entropic (Harris, 2001). To predict the life span of a building , one should be able to identify with certainty all the variables involved in the deterioration model. Considering that it is simple to identify the properties of a single material, one realizes the complexity of the issue when in buildings hundreds of different materials are involved. It is also very likely in the same building to evolve two and more deterioration mechanisms simultaneously, which further complicates the prediction process. Therefore, identification of materials, their properties and damage suffered buildings from the environment is the first step to approach a complex interdisciplinary problem as that of determining the mechanism of deterioration and collapse of buildings. This matter concerns the engineers of all disciplines. With regard to the issue of rescuing interventions, building pathology as well as the monitoring of building pathology, are of major importance. It’s a fact that when a building is abandoned it runs into trouble. The first signs of humidity activate dozens of wearing / erosion mechanisms on the building materials. Shortly after, they all start to rot and collapse, one after the other. As soon as a building is categorized as “dangerous” in the consciousness of the neighbourhood tenants, it becomes a target for demolishment (Brand, 1995). This practice has been confirmed on many different occasions also in the present study. Therefore, the objective is to monitor the pathology of buildings – monuments, and to primarily help the ones that are in the process of being stigmatized as dangerous. The use of the Information and Communication Technologies can be decisive towards that direction. On a scientific level of the protection of architectural inheritance, the contribution of information science was and continues to be of outmost importance. It provides us with answers and solutions for the difficulties and problems that arise during the evaluation process of the subordinate state of buildings, as well as their monitoring and managing. From the relevant theoretical overview, it is concluded that Planning Support Systems infiltrate remarkably slow mainly due to their limited dissemination, their weakness in the choice of appropriate tools, their incomplete -for their ability- update and the non-projection of good practices. This is a phenomenon that can be traced in general in the distribution of new

technologies ((Darzentas et al., 1997, Vonk et al., 2006). The main objective of this research is to evaluate the vulnerability of historic buildings and propose a decision-making model ranking the need of intervention in a historic building stock. In order to achieve this, it is essential to design a database system that enables the recording and indexing of the historic buildings pathology profile. Apart from pathology data, historic buildings are classified in terms of architecture style and type, historic importance and spatial data (position in the city). Monitoring building’s pathology profile has many positive impacts, such as knowing the building’s conservation status, the need for intervention, and the risk of collapsing. In a historic building stock, the safety assessment of buildings is a major research goal. It needs a rational and quantitative evaluation, which usually involves six steps: information acquisition, data processing, numerical modeling, evaluation of potential scenarios, risk analysis, decision-making (Zonta et al., 2008). The city of Hermoupolis was chosen because of its uniqueness that can be traced on its intact conservation almost as a hole until today. In Greece, there are only a few cities that have managed to remain unharmed and even less are those that have endured the unbearable pressures of “land granting”. In addition, the global interest for this city by dozens of travelers for over 200 years, has maintained its physiognomy alive through a number of literature works and manuscripts, which served as a protective shield for its uniqueness. This protection endures until today in the consciousness of the inhabitants as well as the visitors of Hermoupolis, and has produced many supporters of its physiognomy ready to take action in case of its endangerment. Therefore, it should come as no surprise that Hermoupolis presents a uniform image that cannot be found anywhere else in Greece (Travlos & Kokou, 1980).

Organising Seminars

! ! ! ! ! ! ! ! !! In September ! 2013, ! Axem” with “Ad ! a two day organised Festival!Laboratory ! (6) Cultural where six ! Organisations ! exchange ideas on ! Sustainable Culture ! Management ! ! ! ! ! ! ! ! ! ! ! ! ! ! !

Organising successfully for three years in a row, the International Summer Course of Sustainable Culture & Traditional Development.




28 August

22 July

25 August

2 September

27 July

15 September

2 September

28 July

And we are planning more courses, seminars and events next year.

Seven day Seminar (summer course) Vice-president of Organizing Committee

Seven day Seminar (summer course) President of Organizing Committee

Presenting Paper “e-Management and Advancement of Historic Buildings”

Teaching Course “e-Culture”

Teaching course “Digital Heritage”

Presenting Paper “Monument’s Pathology and eManagement of Heritage”

Seven day Seminar (summer course) President of Organizing Committee

Two day FEST LAB President of Organizing Committee

! In the middle-aged city of Upper Syros, a 15th century Monastery is used for hosting Seminars, Round tables, Workshops and Courses on Urban Planning, Sustainable Development, Traditional Environmental Friendly Methods and Cultural Events.


The Monastery is at the top of the hill. It has four floors, with 14 double bed rooms. It has one big room for presentations and two smaller rooms for workshops. The atmosphere is unique.


For three (3) years in a row I was part of Organizing Committee, and Instructor in three courses.


tel +30-2281361001 (in Greek or in English language)

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SERRAOS KOSTANTINOS Associate Professor at the Department of Urban Design at National Technical University of Greece,

+30-2105241903 or +30-6975409608 (in Greek or in English language)

LETTINGA GATZE Professor Gatze Lettinga, Emeritus professor Anaerobic Treatment and Reuse Technologies, LeAF Institute, Netherlands

tel+31-204198850 (in Dutch or in English language)

STEFANOU JOSEPH Professor at the Department of Urban Design, at the National Technical University of Greece

tel.+30-2107723800 (in Greek or in French language)


BIKAS DIMITRIS Professor at the Department of Construction Technology (Aristotle University of Thessaloniki) option,com_contact/task,view/contact_id, 91/Itemid,/lang,en/

tel.+30-2310995763 (in Greek or in English language)





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2000, “Research on he Labor Market in the Prefecture of Thessaloniki”, Field researcher 2001, “Creating travel guide”, member of Research Team 2001, “Information Systems for travelers and transportation: How to improve integrated systems for information”, member of Research Team 2002, “System Driver Training and Assessment using Interactive Evaluation tools and reliable methodologies”, member of Research Team 2002, “Software development for management of the historical buildings in Syros island” 2002, “Urban Planning of the Historic city of Hermoupolis”, Supervisor of the Research conducted by National Technical University of Athens 2003, "e-Monitoring and e-Management of important monuments", paper presented in National Conference in Andros 2011, Seminar (7 days) on “Protection and Projection of Historical Culture; Architecture and Constructions”, Vice president of Organization comity 2011, “e-Management and Advancement of Historic Buildings”, paper presented in international seminar in Syros 2011, Teacher in Workshop for “Digital Heritage”, International Seminar in Syros, Greece 2012, “Multi-criteria tool for pathology and architectural assessment and monitoring of historic buildings: The case of Municipality of Hermoupolis”, paper presented in international conference in Ferrara, Italy 2012, Seminar (7 days) on “Sustainable Cultural Development and Tradition”, Scientific Program Manager 2012, “Monument’s Pathology and eManagement of Heritage”, paper presented in international seminar in Syros, Greece 2012, Teacher in Workshop for “e-Culture”, International Seminar in Syros, Greece 2013, “City Physiognomy and Digital Culture”, paper presented in a Day Conference in Paros, Cyclades, Greece 2013, “Digital Culture & Social Media”, teacher at workshop in Summer Course “Sustainable Culture & Tradition”, Syros Institute 2013, “Smart Cities”, paper presented in Summer Course, Syros Institute 2013, “Saving Historic buildings with multicriteria GIS tool“, full paper presentation in International Conference “Digital Heritage”, Marseille, France

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+30 2281361004

! Pavlos Chatzigrigoriou

+30 6974424174

! pavlos.chatzi


! See my vizify bio!



Dr Pavlos Chatzigrigoriou Head of Planning & IT Department in Municipality of Syros-Hermoupolis Civili Engineer MSc Cities and Monuments Conservation & Protection MSc Environmental Cities and Buildings Planning PhD Buildings Pathology, Protection & Urban Planning using GIS


Municipality of Syros-Hermoupolis

Miaouli Square 1

Hermoupolis, Syros

84100 Greece

! Where am I ? (click to find out)



37° 26.688', 24° 56.567'