English Abstract One of the aims of the project Environment and Economy
at the National Institute of Public Health and Environmental Protection
(RIVM) is to develop a model which can transform monetary units into fysical
units. This model is used for the National Environmental Outlooks. The
model (the so called 'transformation model') is developing continuously.
The Environmental Forecasting Bureau (MTV), part of the RIVM, wants to
review the assumptions which are used to model the fysical inputs and
outputs of the building industry sector of the Dutch economy. This study is
the result of that intention. The main results of the study are: The
fysical growth rate of cement is considered to be representative for the
whole fysical input of the building industry sector. The reliability can be
improved by taking more variables into account. The growth rate of the
outputs depend on the planned construction activities. The main proposed
improvement is to divide the forecasting time horizon in
parts.
