To give an impression of the aspects involved in the study of body spaces in toilet environment. There are only a few anthropometrical sources about elderly and disabled people. For the purpose of toilet environment this is even rarer. First a new measurement study was prepared within the consortium to fill the gap. But after reconsideration of the time, budget and available human resources the plan was changed in using existing resources in close relation with observational studies. The data from the Geron-project (1993-1998) in Delft have mainly been used as a basic source of raw data. This seemed very relevant for this project and as a next step this knowledge was completed with the quantified usage studies done within the FRR-project in the laboratory at TU Delft but also at a selection of sheltered homes in the Netherlands. To set up an anthropometric study within a consortium of partners in different countries seems only possible if the main goal of the budget is to study anthropometry like in the Caesar-project. If as in this FRR-project anthropometry is only one of the aspects - though an important aspect - within the product development project, then it is better to integrate existing raw data with the results of observational research continuously during the development process.