Panel Design for Construction Project of Metropol Parasol in Seville, Spain

Customer Project

Structural Engineering Timber Construction, Analysis and Design
Finnforest, Aichach, Germany
in cooperation with:
Harrer Ingenieure, Karlsruhe, Germany
PBB Ingenieure, Ingolstadt, Germany
APU engineering, Braunschweig, Germany
Wevo Chemie, Ostfildern, Germany
Borimir Radovic, Knittlingen, Germany

Structural Planning
Arup & Partners International Ltd.
Berlin, Germany / Madrid, Spain
Construction Main Contractor
Sevilla, Spain

Timber Construction
Aichach, Germany
Architecture J.MAYER.H
Berlin, Germany
Investor Ayuntamiento de Sevilla, Spain

The Metropol Parasol was built in the historic center of Seville in Spain.

Under its roof, the building combines an archeological excavation, a market hall, an urban open-air venue and an extraordinary shadow construction made of timber, with an integrated restaurant and walks offering wonderful views over the town.

The structural system is a hybrid construction consisting of timber, concrete, steel and composite steel.

Timber Construction with Panels Made of Laminated Veneer Lumber

The most interesting and impressive part of the Metropol Parasol is the accessible timber construction which is 150 m long and up to 28 m high. It consists of multi-layer glued timber panels of the LVL type Kerto‑Q (produced by the Finnforest company).

Some structural innovations had to be made for the implementation, for example the polyurethane coating which is 2 to 3 mm thin, the connection details optimized for mounting and the annealing of the epoxy resin used for gluing threaded bars in place, which was performed for the first time in timber constructions. The annealing became necessary to raise the safety level because more than 60°C is reached in summer inside the timber structure.

Both the structural engineer and the timber construction company decided on a connection system with glued-in tension bars representing a way of connecting elements appropriate for achieving a high load bearing capacity but which is at the same time of relatively low weight.

The timber structure consists of approx. 3,400 individual parts with a total of 2,500 m3 of panels made of laminated veneer lumber used for the construction work.

Stress Analysis with RFEM in Timber Panels

As the panels are connected with releases in the intersection points around the vertical axis, the internal forces from the bearing capacity of plates are almost always negligible. Normally, the stress design is reduced to the stresses occurring within the plane of the timber sheet.

The timber cross‑sections in the branching points where the timber gridshell is divided into a top and a bottom part were designed by Finnforest using RFEM and FE sheet models.

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RFEM Main Program
RFEM 5.xx

Main Program

Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements

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