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The #pedestrianbridge over the B10 in 📍Stuttgart, Germany continues the pedestrian and cycle path route as an extension of our suspended footbridge under the Neckar Bridge coming from Bad Cannstatt in the direction of Stuttgart city center. Embedded in complex surroundings of the traffic junction, a calm and elegant solution was chosen for the new structure. The new bridge structure spans the U14 light rail line and the B10 federal highway with two arch like strutted frame construction. A height difference of approx. 4.0 m must be overcome over the entire length of the bridge. The superstructure, and thus the walking surface, is formed by a trapezoidal box girder cross-section, which together with the supports of the monolithically connected steel stems forms a five-span continuous girder. The two shallow arches meet at their intersection on a hollow steel box pillar. Forming two shallow arches below the superstructure, the struts become one with the superstructure at midspan.

photo credit 📷: #sbp/Christiane Sander, Boris Golz

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As the first cable-stayed road bridge in Greece, the Evripos Bridge connects the island of Euboea with the mainland via the street of Evripos. 🌉
A technical challenge during the design and construction phase was the extremely slender longitudinally and transversally pre-stressed concrete deck with only 45 cm constant thickness, providing sufficient stiffness to abandon any longitudinal girder. Therefore, the multi-strand stay-cables have a closer spacing and were directly used to support the free cantilever formworks during deck construction. For higher earthquake resistance, the concrete deck is monolithically connected to the towers. Any bearing forces due to temperature differences can be absorbed by the slender towers and the flexible superstructure. Pendulum supports were used on the piers at the end of the bridge to transfer the uplifting forces into the supporting structure.

photo credit 📷: #schlaichbergermannpartner | ΝΙΚΟΣ ΔΑΝΙΗΛΙΔΗΣ

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Once the CO2 emissions of our offices were measured and the potential sectors for CO2 savings were identified, our Sustainability Team developed a strategy on how to reduce our emissions. In recent years, most of our carbon emissions have been caused by our business travel.
However, the COVID19 pandemic and the related travel restrictions proved us that our project work can also be successfully carried out using digital meetings. As a consequence, we continue this development and aim for an ambitious reduction of our air travel by about 40% (reference year: 2019). In addition to our travel policy, however, our office processes are also being further optimized in terms of energy and paper consumption as well as waste generation.
Even though sbp's carbon emissions per employee (covering office-related emissions only) are well below country average (covering all emissions of a person) for most locations, there is still room for improvement especially when comparing to limits for the global 2° goal. We are therefore commited to constantly work on further reduction of our carbon emissions and improvement of our sustainable office operations in general.

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To enable the fastest possible transport of critically injured patients to the emergency room, a helipad was added to the Bundeswehrkrankenhaus (army hospital) in Ulm. 🚁 In order to save space, the helipad was installed on the rooftop of the existing west wing. The construction of the platform consists of three load-bearing elements. The cantilevered elevator and staircase made of reinforced concrete serves as static bracing and as a support for the overall structure. In addition, there are two composite steel columns that serve as vertical supports and carry the actual landing platform. The clamp-like design allows the loads to be transferred directly into the ground.

architecture: hochstrasser.architekten
structural engineering: #schlaichbergermannpartner

photo credit 📷: @conne_van_d_grachten

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We are still thrilled to see the completed aerial walkway at @flysea opened to passengers in time for summer travel! ✈️ With an overall length of 780 feet, the soaring cable-stayed walkway is now the world’s longest structure over an active taxilane. Elevated to a height of 85ft above the tarmac, the bridge structure reflects an optimized king-post truss system with tie-down cables to minimize the thrust at the base of V-shaped piers.

architecture: @skidmoreowingsmerrill
structural engineering: #schlaichbergermannpartner

photo credit 📷: Lucas Blair Simpson / Dave Burk

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In 2019, we set up an internal sustainability team to actively promote climate protection both in our project work and in our everyday office life.
As one of their first actions, the team focused on measuring emissions at our office locations as a basis for developing a strategy how to reduce them. The emissions are measured annually per office location so that new savings potential can be identified and our targets reviewed. In addition, a cross-site survey examined how our colleagues get to work. Since our offices are well connected to the respective local transport systems and we additionally support the use of public transport, most of them come by bus or train to office. Many also take advantage of the commute to work and use their bikes or walk to be physically active.
Based on the data collected, the areas where we can save emissions were then identified. Which parts this concerns, will be revealed in an upcoming post.

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For the AQUAtoll in 📍Neckarsulm, Germany, the architectural concept intended a dome roof supported by a terraced substructure. The planar square grid of the dome consists of rectangular solid steel sections of equal length and rotatable nodes, enabling it to adapt to any free form by distortion. Only at its edge the lengths of the sections are different. Since a grid shell with quadratic meshes cannot carry any loads, the roof was additionally stiffened with diagonally arranged pretensioned cables. This resulted in a triangular mesh structure, achieving the load-bearing behavior of an ideal shell without densifying the beams at the zenith of the dome.

photo credit 📷: Helmut Fischer GmbH

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A freeform cable net supporting a footpath while also serving as scaffold for climbing plants, creates an accessible landscape above an urban intersection.
The cable net footbridge at Löwentor 📍 Stuttgart, Germany connects Rosenstein Park with Leibfried's Garden, without interfering with the historic monument Löwentor. The prestressed structure consists of doubled strands with clamps for nodes and edge connections. Depending on the cable forces, the edge cables are doubled or tripled. At the edges, the net is anchored by masts. High and low points create the required bending, to transfer varying loads with as little deformation as possible. A thin concrete slab forms the walkway, which is supported by a construction that can be adjusted in height and thus, aligned as required.

photo credit 📷: Gert Elsner; sbp/Johanna Niescken; sbp/David Sommer

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