Sybrand Tjallingii

Delft University of Technology | TU · Department of Urbanism

The two networks strategy is a guiding model for planning and design that takes the networks of water and traffic as carrying structures. Its origin is in the early 1990s when it resulted from research by design projects aiming at the generation of tools for making urban development and the urban landscape more ecological. Reviewing practical exper...

This chapter discusses planning strategies for the role of water in making urban development more sustainable. The first part analyses the most relevant flows in urban areas: rainwater, groundwater, river water, drinking water and wastewater. This leads to a focus on ‘closing the circle’ and ‘cascading’ as key guiding principles. Through the experi...

In this paper we look at relationships between design, science and deliberation in urban and regional planning. Each of these activities can be used to inform policy, either in isolation or in different forms of combinations. The combinations usually involve hierarchies, which use the framework of one activity to integrate the others. Such hierarch...

A case study of Utrecht demonstrates the application of Green Structure Plans in the Netherlands. At first the city's green areas department used strategic green structure planning as a defensive tool, but this had a limited impact. Operational planning tools were more successful in creating an important role for green areas in the city. Recently,...

Bij duurzaam stedelijk waterbeheer hoort schoon water; beperking van diffuse emissies speelt daarbij een belangrijke rol. Het Platform Diffuse Bronnen in de provincie Utrecht selecteerde een aantal voorbeeldprojecten en mogelijke maatregelen in de procesfasen ruimtelijke ordening, maaiveldontwerp, beheer openbare ruimte en materiaalgebruik op gebou...

The trends are world wide: people and goods are increasingly mobile, compact cities develop into urban networks, industrialising agriculture is becoming footloose, rural life becomes urban life in a green setting. Social segregation, traffic nuisance, urban sprawl and other unwanted impacts of these trends challenge urban and regional planners. The...

Het Milieukwaliteitsplan van het Regionaal Orgaan Amsterdam (ROA) speelt in op de nieuwe bestuurlijke verhoudingen in het ROA-gebied. Het geeft geen vaste doelstellingen waaraan iedere gemeente moet voldoen, maar is een instrumenteel en faciliërend kader voor uitwisseling van kennis en ervaringen, zodat initiatieven niet tot één gemeente beperkt bl...

As chairman ofthe Consultative Programming Committee for Spatial Research (PRO) it is a great pleasure for me to present to you this publication. The theme of this publication, sustainable urban development, is one ofthe major issues oft day. In its Vision on Planning Research in the 1990's, PRO has given priority to several aspects of sustainabili...

Urban and rural areas face growing water problems. Floods, droughts and pollution increase with urbanization and intensified land use. The Dutch, who have struggled against water throughout their history, are now forced to solve the problem of a shortage of good water. In The Netherlands groundwater withdrawal will surpass the yearly recharge in th...

Internal problems of water in the urban ecosystem are usually "solved" by increasing inflow and outflow. Thus problems of depletion may rise at the supply site and pollution and erosion may result at the discharge site. Landscape disturbance may occur on both sites. Water management in urban areas should therefore give priority to those sets of int...

1) Theoretical concepts, historical development of landscape ecology: information theory and landscape analysis. 2) Rural problems. 3) Urban-rural relation, the anthropocentric interpretation of landscape ecology preservation of natural, small-scale, landscape elements in man-dominated landscapes. Restoration of derelict land. 4) Natural areas, res...

In order to obtain ecological guidelines for the planning of nature conservation and nature design in the general framework of regional planning, landscape ecological investigations have been set up in the Kromme Rijn area (Fig.1). The main basical documents are the soil map and the vegetation map. Some backgrounds of these maps are described. Illu...

Een Rijke Bron bevat een selectie van de beste, recente stedenbouwkundige afstudeerstudies uit Delft, becommentarieerd door mensen uit de praktijk. Het gaat bijvoorbeeld om nieuwe rivieren die hoogwaterafvoer combineren met nieuwe waterfronten van steden langs de Maas en de Waal. Maar het gaat ook om naoorlogse wijken in de bestaande stad waar een...