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BUILDING-INTEGRATED
VEGETATION IN CONSTRUCTION
PROCESSES
Marja MesimäkiUniversity of Helsinki
Green Building – Building Green in Cities25.8.2016, Helsinki
Hanna NieminenFinnish Environment Institute
CONTENTS• Case-study – two construction processes• Key factors in the processes • Recommendations
Photo: Niina Ala-Fossi
CASE-STUDY
REVEALED CHALLENGES AND OPPORTUNITIES OF APPLYING BUILDING-INTEGRATED VEGETATION IN CONSTRUCTION
• How were green roofs adopted and realized in two construction processes in Finland?
• What kinds of constraints or facilitating agents there were in the process?
Elderly people’s home area, Tampere
Lentokuva Vallas Oy/ Hannu Vallas. SRV Rakennus Oy
THE CASES• Large projects with various stakeholders and actors• Different locations, times of construction, purposes of the
buildings and establishment method of the green roofs• Private & public projects
Derby Business Park, Espoo
PUBLIC PROJECT (city of Tampere)
New building for catering services in a culturally valuable area• Finished 2008• Seeded meadow-roof• Primary motivation:
architectural solution (landscaping with the green roof)
Hanna Nieminen
Hanna Nieminen
Oy ViaPipe Ab & Rumtec Oy. Asiakaslehti Nro 1 / 2012
Leena Manner, SRV Rakennus Oy
PRIVATE PROJECT
Center of three office-buildings• Constructed 2012/ 2013• 3 sedum-roofs
(ready-made mats)• Primary motivation:
LEED-certification (platinum)
Backtracking the processes step by step, actor by actor
FOCUS IN THE PROCESSES
Finding key themes & actors detailed description of the processes
HOW WAS THE IDEA OF A GREEN ROOF CONCRETIZED THROUGH THE PHASES OF PLANNING AND CONSTRUCTION
IDEA?New purposes & aims for the roof construction
Local context
Features of vegetation as a benefit
MANY ACTORS – MANY AIMS
Different expectations for the green roofs
Landscaping the roof with living, verdant, green nature
Communicating environmental responsibility
Constructing ’Green image’
Experimenting, piloting something new
Vegetation as aesthetic and ’softening’ element in the urban scenery
Trendsetting, pioneering
Different actors – different meanings for the expected solution (e.g. maintenance)
”Natural grass” ”Meadow”
”Neat and even lawn”
WHAT KIND OF GREEN?
THE REALITY OF CONSTRUCTION
PROCESSES
Avoiding/ minimizing risks
STARTING POINTS FOR PLANNING
Economic efficiency
EVALUATION: risks vs. costs vs. benefits
GREEN ROOFS AS INVESTMENTS
Economically beneficial or not?Technical risks?
suspection, uncertainty
VARIOUS LIMITATIONS FOR THE GREEN ROOF
SOLUTIONS
Light-weight Inexpensive
Reliable Simple and
easy
CONVENTIONS AND TRADITIONS
General standars and norms + routines
Chopped construction: several sub-projects and stages
Roles, authority and responsibilities
Knowhow and experience
GREEN ROOF IS A CHALLENGE TO THE TRADITIONAL WAY OF CONSTRUCTING BUILDINGS
Squeezing in/ glueing on the traditional roles and ways of acting
Using conventional standards and norms
Relying on familiar ’tools’
SOLUTION: BUSINESS AS USUAL
WHERE IS THE GREEN?
E.g. load capacity – enough for the desired vegetation?
The central role: structural engineers – avoid risks
vegetation: from benefit to risk
Designing GREEN was not integrated in the process
WHERE IS THE LANDSCAPE DESIGNER
”Landscape designers do not design green roofs”
(quote from an interview)
FINAL SOLUTION – A FAILURE?Not a verdant, GREEN green roof
Living, ever-changing, unpredictable, stubborn element…
NATURECOMBINED WITH relatively conservative CONSTRUCTION field - technologies, techniques and procedures change slowly
OVERCOMING THE
CHALLENGES
Photo: Taina Suonio
RECOMMENDATIONS1. Integrate GREEN roof into different phases
and roles of the process
From planning to maintenance
CHANGE THE ROUTINES!
DISCUSS, COMMUNICATE, COOPERATE!
2. Integrate different AIMS AND MEANINGS related to green roof
RECOMMENDATIONS
Enhance discussion and cooperation between actors with different roles in the process
Share and negotiate meanings and aims for the green roof
THE KEY IS MULTISECTORIAL AND
INTEGRATIVE PLANNING
From the beginning to the end
To bring reassurance, add know-how and courage to customize diverse green roof solutions – for different aims and visions in the local context
Various kinds of norms, standards and model solutions (examples of functioning green roofs) MORE ALTERNATIVES
PRACTICAL TOOLS
Solutions that fit in the ’roofing norms’
TAKE BABY STEPS
For example to develop light-weight solutions, e.g. moss green roofs
paving the way to more diverse solutions
Tiedeartikkeli (Mesimäki & Nieminen ja Lehvävirta 2015)UUDENLAISEN VIHREÄN INFRASTRUKTUURIN TOTEUTUMISEN REUNAEHDOT RAKENTAMISEN PROSESSEISSA – tapauksena viherkatotYhdyskuntasuunnittelu 2015:3
Pro gradu (Hanna Nieminen, Tampereen yo, Johtamiskorkeakoulu)VIHERKATTOJEN TOTEUTUMISEN LIIKKUMAVARA OSANA RAKENTAMISEN PROSESSEJA – tasapainoilua kaupunkirakenteen ja -luonnon rajapinnoilla
Kaksinkertainen vuoden gradu 2015
Yrjö Haila -palkinto (YHYS) &
Suomen Suunnittelevien
Maantieteilijöiden liitto SUM ry)
MORE INFORMATION (in Finnish)
Raportti (Laurila et al. 2014)NORMEJA VIHERKATOILLE - PERUSTEITA KEHITTÄMISEEN
MORE INFORMATION (in Finnish)
Tiedeartikkeli (Kallio Pasi, Mesimäki Marja, Lehvävirta Susanna 2014) MONITOIMINNALLISET VIHERKATOT JAMAANKÄYTTÖ- JA RAKENNUSLAKI. Ympäristöjuridiikka 2/2014. Suomen ympäristöoikeustieteen seurHanna
www.luomus.fi/viherkatot
