12 L. Koskela, P. Huovila & J.

Leinonen

D 6 @ E : @ 5 7 ; 8

> >

# # " # #

1 (  !  % !   $  ! 

"

1 .   % /   )  * 

   

 

1 2 1  1 - $ 1 '  )  $


  

1 A  1 *  $

" # #

1 B 0 * % $

" " ,

1 C 1     '  )  $

3 4 5 6 7 8 9 : ; 8 : < 9 7 ; =

; ? 4 @ : ; 5 ; 9

> >

K  L    

         

" , " " #

' ( )  *  + )   $ 


L      

- % *  $

    !

         

' .  ! /  % ! 0  ! $ 1 )

" # " #

!  $ % & $  !

" #

 0 - 1 $ * % 0 ) 1 !  &  
         


   

' 2  ! /  % ! 0  ! $ 1 )

         

" #

 0 - 1 $ * ' &  )   !

F G H
4 I = 4 ; J 6 @ : 8 < <

>

"

(     !

" # #

.   $  -  % 1 $  ! 

M : 6 @ 7 9 4 : ;

 
   

>


  

 ( &  1 '  )  $

 . 0 1  ! $ 1  ! 1 '  )  $

Fig. 1. EcoProP framework (Leinonen and Huovila 2000).

Currently, such an analysis might easily lead to an unnecessary reduction of value,

since there is no clear understanding of what is important for the client.

6.6. Post occupancy evaluation

Post Occupancy Evaluation (POE) is a process of evaluating buildings systemati-
cally after they have been built and occupied (Preiser et al., 1988). POE is a method
for learning and using this cumulative knowledge to create better-performing build-
ings in the future. POE information can be used as feedback for problem solving,
fine-tuning the occupied building, and for documenting successes and failures in
order to improve the design criteria and guidelines (Preiser et al., 1988).
VTT Building and Transport, together with a large facility owner/developer, has
applied Post Occupancy Evaluations, which are made after the building has been
occupied for one year. Findings clearly show that POE measurements themselves are
not sufficient to have an impact on the project definition phase of future projects.
The organization has to give meaning to the results, i.e. has to discuss what the
implications are and explicitly state what should be done to avoid, in future projects,
deficiencies discovered (Kurki, 2000). For example, occupiers complained for several
years that large glass surfaces caused various problems like chill in winter, heat in
summer, draft and leakages. Nothing, however, changed until the people responsible
for setting requirements started to discuss this problem. Now the problem has been
acknowledged and the latest Post Occupancy Evaluations show that it no longer
occurs (Kurki, 2000).