ARISTOTLE UNIVERSITY OF THESSALONIKI (AUTH)DEPARTMENT OF CIVIL ENGINEERING DIVISION OF STRUCTURAL ENGINEERINGLABORATORY OF BUILDING CONSTRUCTION AND –PHYSICS (LBCP)

Professor DIMITRIOS K. BIKAS

Dipl.-Eng. Architect (AUTH)Dipl.-Ing (TU Berlin)Dr.-Civil Eng. (AUTH)

• Email: bikasd@civil.auth.gr• Telephone +30 2310 995763 / 99577

Teaching subjects

-Undergraduate Coursesrgraduate Courses

• Building technology• Building Physics• Industrialized building • Special topics of timber construction

-Postgraduate CoursesPostgraduate Courses

• Restoration of historic buildings• Sustainable Building

Research areas

• Thermal behavior of new and existing buildings

• Restoration of existing and historic buildings

• Environmental & Sustainability aspects in building construction

• Industrialized Building Systems and components

International programs

• CIB W 82- Future Studies in Construction

• GBC - Green Building Challenge • CRISP• LIFETIME• COST

– Action C 13– Action C 16– Action C 25

• ECTP–European Construction Technology Platform

CIB – W82

Future studies in construction

“Sustainable Development and the Future of Construction” P 225

National Report (Greece)

Kilkis Public Administration BuildingKilkis Public Administration Building

1. small canal around the building-water surface assisting evaporative cooling2. fountain3. trees for shading, evaporative cooling and relaxation of the employees4. grass assisting the drainage of storm water on the site5. passive solar systems on the south façade of the building6. atrium 7. translucent roof strips admit natural light8. windows overhangs providing shading

Project dataProject data  Building namePublic Administration BuildingBuilding type38 typical office rooms administration building with support areas

including library, cafeterias, conference room and storage spaces.LocationKilkis (1h north-west of Thessaloniki), Greece. CompletedNovember 2001OwnerKED (Ktimatiki Eteria Dimosiou) DesignersEKATER-P.Economides, N. ChrisomallidouSite area2530m2

Gross floor area2601m2

Typical building population143 BackgroundThe building was designed according to basic bioclimatic principles.Passive solar systems (rather advanced in comparison to current practice) areapplied in order to provide a low energy consumption building. Consumption of delivered energy for heating and cooling 236MJ/m2*yr Passive solar systems for heating and natural cooling (contribution of solar thermal gains estimated at 37%). Central heating and mechanical ventilation and cooling systems able to cover 100% of the building’s needs. Calculation of the thermal performance of structural elements (walls, floors and roofs), and at the level of each floor above and below grade, and at the level of the façades. Translucent roofing strips. Internal atrium (natural ventilation). South side overhangs and interior shading devices. Planting of trees and creation of water surfaces around the building, providing evaporative cooling. Embodied energy for structure and envelope 34MJ/m2

Most of the materials used in the construction came from local production industries and the transportation energy was minimized. There is no steel structural frame. 

Potable water consumption 12,4(m3/occ)yr Most of plant species do not require watering. Greenhouse gas equivalent emissions283kg/m2/yr Passive solar systems reduce fuel and electricity consumption by covering a big part of the building’s thermal and cooling needs.  Capital cost/gross floor area $5390Operating and maintenance cost/gross floor area$20The construction cost is close to the current practice, but the operatingcost is relatively reduced due to the passive solar systems (minimization of fuel and electricity consumption).

Measures taken to use materials efficiently   Recycled content of materials used Concrete 10%     Aluminum 50%   A large part of excavation material is used as fill or topsoil Measures taken to reduce the use of automobiles   The distance of the building to the likely residential area for the majority

of the occupants is about 1km so the employees arrive at work on foot. Measures taken to maximize the quality of the indoor environment  Daylight distribution from glass roof interior atrium and side windows is

carefully modeled.  Does not contain asbestos-containing materials or uncoated mineral

duct liners and does not use loose-mineral fiberin suspended ceilings used as plenums.

Interior and exterior shading devices to control glare.

RESOURCE CONSUMPTIONEnergy Energy consumption of the case study building is satisfactorily improved compared to the current practice due to the passive solar systems that contribute to the heating,cooling and ventilation of the building.LandThe site belongs to neighborhood where adequate supplies of moderate cost landfor mid-term development needs are availableEcological value is enhanced with plantingWaterLow water demand plantingBuilding reuse There was not an existing structure on the site and no salvage materials have been brought from off site sourcesNew materialsThe most of new materials are recyclable and are brought from local productionindustries.  

ENVIRONMENTAL LOADINGSGHG, AcidificationThere are no Greek regulations setting the relevant benchmarks.Solid wasteLarge part of solid waste is used as topsoil or fillEffluentA big proportion of the storm water is drained through the permeable area of the siteSide impactsAlthough the site has high performance, in most impacts the low daylight access leads to anunsatisfactory score 

Greek GBC Assessment and Vote Team

Dimitris Bikas, Professor, Team LeaderChristina Giarma, Civil EngineerTatiana Koimtsidou, Civil EngineerKarolos Kontoleon, Civil Engineer, Phd StudentEkaterini Efmorfopoulou, Assistant ProfessorDimitris Aravantinos, Assistant Professor

Design TeamEKATER-P.EconomidesN.Chrissomalidou, Professor (Bioclimatic study)

Direct gain from south openings in summerDirect gain from south openings in summer

Direct gain from south openings in winterDirect gain from south openings in winter The construction of the system and its operation in winter

The construction of the system and its operation in summer

INDOOR ENVIRONMENTAL QUALITYHigher than this of the current practice performance in all indoor environmental quality parameters. 

1.7

1.3

1.3

0.8

0.0

-2.0 -1.0 0.0 1.0 2.0 3.0 4.0 5.0

IAQ

Thermal Comfort

Illumination

Acoustics

EMF

Indoor Environmental QualityIndoor Environmental QualitySERVICE QUALITYVery satisfactory performance due to the careful design of the electrical and mechanical systems.

2.3

2.5

3.1

3.5

-2.0 -1.0 0.0 1.0 2.0 3.0 4.0 5.0

Adaptability

Controllability

Maintain

Performance

Amenity

Quality of ServiceQuality of Service

1.9

2.4

1.7

0.0

1.3

-2.0 -1.0 0.0 1.0 2.0 3.0 4.0 5.0

Energy

Land

Water

Building re-use

New Materials

Resource ConsumptionResource Consumption

-0.4

0.0

-0.8

1.9

1.7

-0.5

-2.0 -1.0 0.0 1.0 2.0 3.0 4.0 5.0

GHG

ODS

Acidification

Solid waste

Effluent

Site impacts

Environmental LoadingsEnvironmental Loadings

7

78

6

523

1

4

Professional Activities

• Design & projecting of more than 30 private and public building projects

• Editor-in chief

of the KTIRIO-Scientific Journal

RESTORATION OF AN OLD WAREHOUSE

  Creation of an atrium which will cut through all levels of the building and terminate in the skylights in the roof. This structure will contribute to the lighting, natural ventilation and passive cooling of the building, having a cumulative effect on the reduction of energy consumption.

  Positioning of sun shading devices over the external openings and/or moveable artificial shading systems.

  Positioning - installation of photovoltaic modules on the south side of the roof.

Year of comp. 1890

New Use = demonstration building

Floor num. = 2 + basement

TESCOP

Life cycle analysis of concrete products

With the use

of

SimaPro