Sankt Kjelds Plads and Bryggervangen climate-change scheme - winner of the Arne Prize 2020

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On Friday, it was announced that the climate-change scheme for Sankt Kjelds Plads and Bryggervangen by SLA architects and the engineering company NIRAS has been awarded the Arne Prize for 2020 …. the major annual award from the Danish Association of Architects.

The selection of a climate-change project for the Arne Prize has, if anything, more significance because this year there was a short list of six projects that included very strong contenders for the prize with the extensive work on Karen Blixens Plads - a huge project by the architects COBE that is at the centre of the south campus of the university - and the stunning stations of the new line of the Metro that opened in September.

Sankt Kjelds Plads is at the centre of a densely-built residential area immediately north of Fælledparken so it is about 4 kilometres north of the centre of the city. Most of the apartment buildings here date from the first half of the last century with most buildings of five storeys around attractive but enclosed courtyards and with wide but slightly bare and bleak streets.

Storms with sudden and increasingly severe rain have meant severe threats from flooding both as drains block and streets flood but also as rain-water floods down from the roofs.

This extensive and essential scheme to control storm water in the area was designed in 2015 with construction work and then planting undertaken between 2016 and 2019 and had to include extensive and disruptive engineering works for new drains and for sunken holding areas for water so sewers are not overwhelmed with cloud bursts.

A crucial part of the scheme was to rationalise on-street parking for cars and to reduce and slow down through traffic so large areas of what had been tarmac could be replaced with pedestrian areas with seating and with dense planting more like urban woodland than simply shrubbery around newly excavated hollows that act as temporary water-holding tanks but are otherwise planted with vegetation that can withstand occasional flooding.

Shale has been used around water pipes to slow the water that cascades from down pipes in a storm and there are large domed sumps with wide vertical drops to deal quickly with water from street gulleys.

What is already clear is that there has been major social gain from the work with new cafes and new businesses attracted to the square and to the nearby and related climate-change scheme for Tåsinge Plads just 80 metres to the east of Sankt Kjelds Plads.

initial assessment posted to Danish Design Review in April 2019
Tåsinge Plads

 
 
 
 
 

note:

Each year, alongside the main Arne Prize, there is a second award - the Lille Arne or Little Arne Prize - that recognises excellence across a broader range of work associated with architecture. This year the Lille Arne was awarded to Sydhavnens Folkmøde that provides a platform for local residents to have a democratic involvement in the on-going development of the south harbour.

Sydhavnens Folkemøde

 

update - Sankt Kjelds Plads - climate change landscape

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Sankt Kjelds Plads in July 2018 - looking towards Hahnemanns Køkken - the cafe on the north side of the square

 

the same view in April 2019

Sankt Kjelds Plads is in a densely-built area of older apartment buildings about 4 kilometres directly north from the city hall.

Many of the buildings here date from the 1930s but there are large modern office buildings and large and relatively recent industrial buildings and a large supermarket to the west.

The area has a distinct urban character with relatively wide streets but little planting and not just on street parking but also fairly heavy through traffic. From the air you can see that most of the large apartment blocks have extremely pleasant courtyards with planting but the real problem for this area is that climate change has meant occasional but very destructive flooding from sudden rain storms with traditional street drainage unable to deal with surface water on the streets and with rain running off the roofs of the large buildings.

The solution has been to put in fast-flowing storm drains, surface channels to take water away to tanks or sumps where it can be controlled, and, where necessary, filtered and then released into the drainage system but at an appropriate rate. These sudden storms may last for only an hour but in that time there can be a depth of 30 centimetres of water across the road that stops traffic, floods basements and ground-floor apartments and businesses and takes road-level pollution through the drains and to the harbour and the sound.

Along with this hard landscaping of drains and surface gullies, the other solution is extensive planting that absorbs rainfall - apart from the most severe storms - and adds considerably to the amenity value of the street scape.

Here at Sankt Kjelds Plads, seven roads converge at what was a very large traffic round-a-bout. That was planted with shrubs and trees but it certainly was not a place to sit. In fact, with the heavy traffic, it was not a place where many people even cut across.

With the current scheme, small areas of pavement in front of the buildings have been pulled forward and the traffic discouraged and the round-a-bout reduced significantly in size. The new areas are densely planted and have pathways curving through them with seats . Sunken areas will flood when there are storms, to act as holding tanks, but have planting that will cope with short periods of partial submersion.

This will be the first full growing season for the trees and shrubs and ground cover so it is not fair to judge the scheme until everything becomes more established but already the transformation is obvious.

This large open space links through with the climate-change landscaping of Tåsinge Plads, about 85 metres away to the east, and the main north south road through Sankt Kjelds Plads - Bryggervangen - is also being planted to form a green corridor from the large park - Fælledparken - to the south and continuing through to an open area and pond to the north beyond Kildevældskirke.

more images and map

post on Sankt Kjelds Plads July 2018
post on Tåsinge Plads July 2018

looking across Sankt Kjelds Plads from the south side - although it is hard to see through the new planting, the traffic island is still at the centre but has been reduced significantly in size

 

aerial view of Sankt Kjelds Plads after the main landscape work on Tåsinge Plads had been completed - the thin triangular street space on the right towards the bottom - and just before construction work on Sankt Kjelds Plads began so this shows the original traffic island and areas for people to walk kept to the edge immediately in front of the buildings

the rain is coming - Sankt Kjelds Plads

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Sankt Kjelds Plads looking south from Æbeløgade and the view up Bryggervangen towards the Plads with the new areas for planting under construction in July 2018

new storm drains going in along the road edge (above)
drawing from SLA showing the extent of the scheme from Sankt Kjelds Plads and north and south along Bryggervangen  (below)

 

Less than 100 metres from Tåsinge Plads is Sankt Kjelds Plads - a second phase of work for new drain systems with hard landscaping and appropriate planting to cope with the inundation of water from rain storms. 

Here there is a large traffic intersection with Bryggervangen running through from north east to south west and three other roads - Nygårdsvej from the east, Æbeløgade from the north west and Sejrøgade from the south west - meeting at a large space that was until recently laid out as a large traffic round-a-bout.

A new scheme with holding tanks for rainwater, new storm drains and a series of water features and extensive planting have been designed by SLA.

New areas of paving and traffic calming with new marked bays to control car parking is well in hand.

It is not just the road intersection that will have new planting but the long diagonal run of Bryggervangen is part of the work and this will form a new green corridor from a small lake and open ground several blocks to the north at Kildevældssøen and continuing south towards the open space of Fælledparken.

the new climate district - by Tredje Natur

 

A local store has a window covered with a huge illustration of the finished scheme.

 

Hahnemanns Køkken

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Hahnemanns Køkken from across the square ... perhaps not the prettiest of views right now but wait until all the planting and the water-filled canals go in 

 

 

Coffee and a cake at Hahnemanns Køkken was not the reason for going up to Sankt Kjelds Plads … honest … although it might have influenced the decision to go back a few days later … to retake one photograph of the square with the sun in a better position … or that was the excuse … and have another coffee and cake while I was there.

The café and food shop that also sells kitchenware, tableware and cookery books along with space for cookery demonstrations and cooking classes was opened here by Trine Hahnemann in February.

There are tables out at the front, facing south across the square, and from here you can watch all the engineering works and track progress as trees and shrubs are planted and the features like canals or ponds filled with water. Drawings indicate that this paved area in front of the café will be enlarged so it will be able to take full advantage of the new urban landscape once the water features and planting become established.

Hahnemanns Køkken
Sankt Kjelds Plads 14