European Landscape Architecture: Best Practice in Detailing

(John Hannent) #1
The Netherlands

Future high water levels will also leave their mark,
even if this is just a dark line along the wall. This, of
course, is inherent to a quayside, part of which is
submerged, and part of which remains dry. For this
reason, no plans for cleaning the wall – and thus
for effacing the traces of high water – have been
included in the quayside management regime.

The grandstand steps create a prominent 70m break
in the line of the quay, which is 450m in length. They
consist of a prefabricated concrete stairway con-
struction 4.15m in height, and are designed partly
as a grandstand, partly as steps. Although they will
usually be empty, they will fill up with people when
there are festivities on the water.

As in the new residential area, it was a deliberate
decision to leave the quay almost completely bare of
furniture. Because usually there are not many users
on the quay, it was decided to keep it as empty as
possible. This idea is extended in the stairs – which
thus become a grandstand – and also in the bollards
(which will provide an obvious place to sit) and in the
three very long benches on the high quay.

The stairway is placed on the white 40 x 40cm
grandstands steps in the form of black 20 x 20cm
treads. In one area it is continuous, but elsewhere
fragmented. The overall composition is evocative of
the keys of a piano.

On the top of the quay wall there are railings whose
design was inspired by those on a ship. Their mate-
rials are also related to ships: cables, stainless steel
and wood.

The balusters are inclined so as to follow the slope
of the wall. They are conical in form, and thus
taper. Containing welded sleeves through which the
cables pass, they are made of grit-blasted stainless
steel, and are thus more resistant to dirt.

Near the hotel, the balusters are higher and have
been topped with a wooden rail, wide enough to
support the elbows of anyone leaning on it to look
over the river. This rail is made of bonded locust
wood and is oiled against weathering.

The steel cables passing through the balusters have
been tensioned with wire-stretchers at the pressure
braces and tension braces, which will also allow for
post-tensioning at a later date.

The promenade on the quay consists of white
semi-hard paving, with elm trees planted just
beyond the theoretical dike profile. The paving is a
two-component type that develops a stable surface
after mixing and rolling.

The high canal quay
The canal quay is much less open than the quay

6.7
The steps with small tread elements
6.8
The canal quay under construction

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