En flytande fråga - Om dagvatten i plan- och byggprocessen

Sammanfattning: Many municipalities plan for urban infill development to fulfill the housing needs and diminish urban sprawl. Without a good planning approach, urban infill brings more impervious areas and smaller green areas that can take care of stormwater. This creates pressure on the existing drainage system when heavy rains fall. Thus, there is a risk for urban flooding if those aspects are not taken into consideration during the planning process. The municipalities' planning approach has been reviewed as a case study in three cities, as well as the role and conditions the other stakeholders hold through the construction process. A literature review of the process, from idea to functioning facility, has been conducted. An interview study has been conducted to produce a more complete picture of the collaboration process. The interview study showed that there is a lack of knowledge and a poor transfer of information and skills in many stages through the planning, design and management process. The process shows gaps in responsibility and skills when a construction project is handed over to the next stakeholder. Missing or faulty information during handover of a project is also common. To avoid these problems there should be guidelines, routines and checklists intended to clarify and facilitate cooperation. Municipalities should put greater effort on having enough resources and professionals.