The Evolving Metropolis – IABSE Congress 2019 New York City

In the ninetieth year of its existence, the International Association for Bridge and Structural Engineering (IABSE) chose the venue for its annual congress in the spirit of the title “The Evolving Metropolis”: From 4th to 6th of September 2019, the world of civil engineering will meet in New York City. As always, participants will be offered a varied programme with numerous lectures, workshops, excursions and social events.
Lüchinger+Meyer will be represented in New York by Dr. Borja Herraiz. His interesting presentation “Restoration of a historic reinforced concrete structure with Ultra-High Performance Fiber Reinforced Concrete” awaits the visitors of the session “Strengthening – Historic Structures 1” on Friday morning, the 6th of September.
The subject of the lecture is the more than 100-year-old commercial building “Du Pont” in the centre of Zurich, which is currently being converted into a hotel. The listed structure, which was extremely innovative at the time, has various special features, such as very slender reinforced concrete ribbed ceilings, upper floor ceilings suspended from the concrete roof structure, or support beams on the ground floor, which transfer the loads from the seven upper floors.

In his presentation, Borja Herraiz will describe in detail the manifold challenges of structural design in the course of the conversion and explain the selected reinforcement measures. One focus of the presentation is the chosen solution for the strengthening of the existing ribbed slabs, which will be achieved by applying a thin layer of ultra high performance fibre concrete (UHFB). Accompanying experimental tests on original components carried out at ETH Zurich confirmed the suitability of the proposed reinforcement solution and at the same time recommend it for future applications in the field of reconstruction.

Restoration of a historic reinforced concrete structure with Ultra-High Performance Fiber Reinforced Concrete
Session H.6: Strengthening – Historic Structures 1
Friday, 6th of September at 9am
Javits Center NYC