The design of the paving sett is determined by the general concept being deployed in the Diagonal project: the transformation of an expressway for through traffic into a green corridor, a place to stroll, where pedestrians have a prominent place in the leafy shade of the trees that grow along the avenue. One of the challenges of the project is to conserve almost all the trees, mostly planes, that shape the avenue’s image and cast their shade on the ground. To enhance this shade, the pattern of the paving reproduces the leaves of this tree.
The plane tree leaf is made up of the union of four juxtaposed setts. The particularity of the design means that if the tiles are rotated and laid differently, the pattern continues to work, and the representation obtained is a geometrization of the shadow cast by a plane tree leaf. The positive relief stands out by between 2.5 and 2 mm, lightly reproducing the undulating texture of the leaf. A degree of convexity is introduced to facilitate runoff.
The texture and colour of the paving sett is created by a combination of aggregates, inorganic colorants, latest generation additives and high-strength cement. The result is a light greenish-grey pavement with low heat retention and low thermal radiation.