the rain is coming - Heimdalsgade

In 2015, an exhibition at the Danish Architecture Centre - The Rain is Coming - set out the repercussions for the city from major changes in climate.

One obvious problem, already experienced in the city, is that sudden and heavy rain storms overwhelm the drainage system, so streets are inundated with water, traffic is severely disrupted, property damaged and drains and sewers broken or polluted water surges out into the Sound.

Since that exhibition, several extensive drainage and landscape schemes have been completed to cope with these sudden rain storms and the most recent is in Heimdalsgade in the city district of Nørrebro where innovative climate tiles for paving have been installed.

Design work was by Tredje Natur … an architectural and design studio founded in 2012 by Flemming Rafn Thomsen and Ole Schrøder with offices nearby. They undertook extensive research and development for the project over three years that was supported by funds from Realdania and Markedsmodningsfondenover.

Their new system manages both surface water and rain water from the roofs of the buildings along the street by taking it down through holes in the paving slabs and into a series of vertical and horizontal pipes, below the pavement, that control and direct rain water either to temporary storage before it is released in a controlled way into the drains or it is diverted into areas of planting.

Plugs within the pipes can change the configuration but can also transmit data for water management … controlling flow or in winter detecting that pavements have been salted so water cannot be directed to irrigation. These schemes have to protect sewers and stop contaminated surface water polluting water in streams, lakes or the Sound.

These plugs can also be adapted as sockets that take street furniture such as signs, lights and plant boxes.

Work was undertaken to coincided with work to replace pipework for the area heating system so it minimised extra road works and disruption.

The new climate paving can be seen along Heimdalsgade for 50 metres from the end furthest from Tagensvej … so at the corner with Overskæringen, outside the café at Heimdalsgade 22. With a new area of planting taken out into the road, this has meant a new if narrow but shielded public space that has already been colonised with tables and chairs from the cafe.

Tredje Natur