Landshape is a cable-net and fabric formed concrete shell that serves as a bridge, originally developed by ZJA Zwarts & Jansma Architects and its partners for the ARC Wildlife Crossing design competition. Through introduction by Witteveen+Bos, and while working at ETH Zurich on flexible formworks, Summum Engineering’s Diederik Veenendaal provided a second opinion and consultancy regarding the structural design of the shell and the feasibility of the formwork system.

Landshape is an innovation in design and in construction methods. It offers a flexible system for crossings, a special type of bridge to serve as a landscape connection. Landshape is an innovative, constructible, context-sensitive, attractive design solution for an efficient, affordable and ecologically responsible crossing.
To provide a cost-effective crossing, Landshape is a lightweight structure formed by a doubly curved shell. In cross section the flexibly formed shell structure has a curved shape that cradles a crossing, protecting it from the influences of oncoming traffic. For the traffic that passes underneath, the shell’s curvature presents an inviting shape.
Because of the efficient shell form, Landshape consists of a very thin concrete skin as load-bearing structure, composed of a layer of high strength, reinforced concrete and a layer of expanded polystyrene (EPS) blocks. In addition, the construction method enables the flexible formwork to be made out of prefab mass-customized elements, making it possible to reduce the execution – and on site preparation time.

Landshape was originally conceived as a wildlife crossing for the ARC International Wildlife Crossing Infrastructure Design Competition.

Read more at the official website of Landshape.



    ZJA Zwarts & Jansma Architects
    ETH Zurich

      Torsing, R., Bakker, J., Jansma, R. and Veenendaal, D., 2012. Large-scale designs for mixed fabric and cable-net formed structures. In: Proceedings of the 2nd international conference on flexible formwork (ICFF), Bath, UK.

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