The construction of the New Slussen is one of the largest urban transformation projects in Sweden. The original Slussen, built in 1642, is the lock that separates the sea from the fresh water of Lake Mälaren. Working in collaboration with the City of Stockholm, the 12 Billion SEK project seeks to create a dynamic urban quarter, responding to its historic context and transforming the city centre.

One important function for New Slussen is to reduce the threat of flooding and protect the drinking water for two million people in Mälardalen. And that is where ArcelorMittal comes in...

New Slussen is important for the whole region

The rebuilding of Slussen is of great significance for Stockholm and also for the rest of Mälardalen.

Stainless Duplex plates manufactured by Industeel Belgium and formed at Industeel Dunkerque will be welded together to form a flood gate of approximately 36 metres in length. These will be mounted on Lake Mälaren. The plates will help to reduce the threat of flooding and to protect the drinking water for the people in Mälardalen.  

The water level of Lake Mälaren is controlled at several places in Stockholm and Södertälje by allowing the water to drain from the lake into the sea. When large quantities of water flow into Lake Mälaren because of melting snow for example, not enough water can flow into the sea.

Building larger canals for the sake of water

By building new, largers canals at Slussen, today's threat of flooding can be removed. In this way, access to drinking water is assured and vulnerable areas - such as the underground station in the Old Town, regional airports, and other important infrastructure buildings and agricultural land - are protected from the current threat of flooding.

Changing the control of the lake's water level also benefits the wildlife around the beaches of the Mälaren, improving conditions for birds, bats, fish, and frogs with a higher water level in the spring. There will also be advantages for shipping, particularly in reducing the risk of running aground.

New Slussen will be adapted to the climate

New Slussen is being built to last around 100 years, which is the usual lifespan for this type of construction. New Slussen reduces today's threat of flooding, as well as allowing for an increase in sea level caused by future climate change. Slussen is designed to be able to manage the elevation of the sea level that SMHI (Sweden's Meteorological and Hydrological Institute) considers likely within its lifespan.

Text:
ArcelorMittal Europe Communications
Constructalia

Images:
ArcelorMittal
Hamed.se / Shutterstock
Per-Boge / Shutterstock
GenOMart / Shutterstock

Video:
ArcelorMittal

Related link(s)

May 2018 - Cityscape view from above of large contruction site at the Old Town and Slussen in Stockholm, Sweden

New Slussen

Lake Mälaren

Transport of the segments for the flood gate of the Slussen project in Stockholm. On their way to our customer Stål & Rörmontage.

New Slussen

ArcelorMittal Europe announces details of the CO2 technology strategy that will enable it to offer its first green steel solutions to customers this year (30 000 tonnes), scale up this offering in coming years (to reach 120 000 tonnes in 2021 and 600 000 tonnes by 2022), deliver its 30% CO2 emissions target by 2030, and achieve net zero by 2050.

Click here to learn more: ArcelorMittal Europe to produce ’green steel’ starting in 2020

Despite the challenges of COVID-19 on our daily and professional lives, some projects have continued and have even been successfully completed these past months. Since March 2020, Industeel's site in Charleroi, Belgium has been equipped with 1512 photovoltaic panels on its roof. The green electricity generated will allow Industeel to produce cost-efficient steel while reducing its CO2 footprint. The panels have been fixed on a steel structure coated with Magnelis®.

A strong illustration of sustainability

With this project, ArcelorMittal reinforces its commitment to energy efficiency, renewable energy, and CO2 emissions reduction across all facilities. This project represents one more step towards sustainability and a cleaner future while reducing expense and generating positive EBITDA savings.

Throughout the 20 years of the contract life, the supplier PERPETUM will take on the full maintenance and operations of the panels and will guarantee both the performance and the output of the panels. After 20 years, the panels will belong to Industeel Belgium and will continue to produce energy. The electrical power of each panel is 320 Wp (watt-peak). This corresponds, with southern exposure, to an expected annual global electricity production of 500 MWh, which is equivalent to the energy consumption of 120 households.

Protected by Magnelis®

Industeel worked with Green4Power, who invested in the project, and entrusted the supply, assembly, and commissioning to PERPETUM. The structure supporting the 1512 solar panels was entirely built with Magnelis® - a product of ArcelorMittal Europe – Flat Products - in grade ZM310 and produced in Liège.

Magnelis® is an exceptional metallic coating with a chemical composition including zinc, 3.5% aluminium, and 3% magnesium. This unique composition allows Magnelis® to provide an unprecedented level of surface and cut-edge protection against corrosion even in the most hostile environments.

This project was successfully completed thanks to the excellent teamwork between Industeel and the European Procurement Organisation's energy efficiency projects team, who implement various energy efficiency projects including on-site solar photovoltaic projects on the roofs and land of ArcelorMittal sites.

"The renewable energy generated by these 1500 solar panels supports us in achieving ArcelorMittal's ambition to be CO2 neutral by 2050," concludes Alex Nick, CEO Industeel.

Text: ArcelorMittal Europe Communications
Images: Marc Burton, Energy Management and Optimisation, Industeel Belgium

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Solar panels for Industeel Charleroi roof with Magnelis®

Industeel Charleroi solar panels with Magnelis®

Industeel Charleroi solar panels with Magnelis® banner

Solar panels for Industeel Charleroi roof with Magnelis®

Ateliers 3S create contemporary looks for urban areas with ArcelorMittal organic coated steels. Bacacier is a leading supplier of steel roofing, cladding, and flooring applications for industrial and commercial buildings in France. In 2012, the company created a new entity – Ateliers 3S – to work closely with architects who were building or refurbishing buildings in the centres of cities around Europe. Using organic coated steels from ArcelorMittal Europe – Flat Products, Ateliers 3S have developed a range of signature products specifically for the urban environment. One of the latest is the New York® range which allows architects to play with shapes and shades using a ‘toolbox’ of solutions.

Inspired by Phillipe Starck

“The idea for Ateliers 3S came when Jean-Christophe Vigouroux, CEO of the parent company Bacacier, met France’s best-known contemporary designer – Philippe Starck – back in 2011,” explains Julien Faisandier, managing director of Ateliers 3S. “That inspired us to create the Starck® range, the first in the Ateliers 3S portfolio. The range is designed as a toolkit which allows architects to design truly unique projects. It includes an exclusive colour palette, panels in five different designs, and a range of accessories.”

Mix and match approach

From there the Ateliers 3S family grew to include Cadence® and Epure®. Like the Starck® range, these products are based on different steels from ArcelorMittal Europe – Flat Products notes Julien Faisandier: “The exact grade we use depends on the aesthetics required by the customer, and the type of environment where the building is located. We use a lot of Granite® HDS and HDX, particularly in metallic colours.”

The Cadence® range includes 11 profiles with squared standing seams and 11 profiles with triangular seams. The products can be mixed and matched to create a specific design. The finish of these panels can be very tactile thanks to the use of ArcelorMittal products such as Granite® Quartz.”

The Epure® range is a standing seam solution from Ateliers 3S and utilises Granite® Storm from ArcelorMittal. It gives architects four zinc colour options and standing seam panels in four different widths. The colours and widths used on a facade can be mixed to create repeating or random patterns of seams and/or colours.

The latest in the series is New York® which represents a real change for Ateliers 3S. “New York® uses a special folding technique and allows architects to play with shapes and shades,” says Julien Faisandier.

Product consistency and support highly valued

The consistency of ArcelorMittal’s offer is a key consideration for Ateliers 3S notes Julien Faisandier: “When we send a sample to an architect, it can take 18 months for them to place an order. During this period, it is critical that the aesthetics of the steel do not change. ArcelorMittal’s ability to produce consistent products – sometimes years apart – is something we value greatly.”

Throughout the development of the Ateliers 3S family, the company has had a lot of support from ArcelorMittal’s Global R&D teams explains Julien Faisandier: “They provide a wealth of samples and advice at every stage in our development cycle. For example, ArcelorMittal helped with the saline tests we needed to conduct before the products could be placed on the market. We also appreciate the availability of the sales and technical teams, particularly when it comes to testing new steels.”

Floirac project

One recent project undertaken by Ateliers 3S saw the company supply over 20 000 m2 of panels from its Cadence® range. The material was used to clad 17 towers located in Floirac (south-west France) which accommodate 453 housing units. The panels were made from Granite® HDS in three different shades.

The project was jointly designed by TAAD Architectes and MOG Architectes. The architects’ specifications required a material which could insulate each building and give them a more modern and aesthetic appearance. To minimise disruption to residents, the Cadence® panels were fixed to a complex wooden frame in the factory and then attached to the buildings. The use of prefabrication enabled the large project to be completed in just six months.

Like all steel facades, the panels are maintenance-free. Due to the high-end coatings used on the steel, the Cadence® panels are guaranteed to remain beautiful for at least 30 years.

About Ateliers 3S

Ateliers 3S provide cladding applications for architectural projects including new builds and refurbishments. As well as supplying material to major projects, Ateliers 3S also provide solutions to individuals who are extending or refurbishing their existing homes.

More info at www.ateliers3s.com

Text: ArcelorMittal Europe Communications, Constructalia
Images: Bacacier

Related link(s)

Ateliers 3S's New York® reflects the skyline of the Big Apple’s main districts.

The Floirac project uses a mix of three complementary shades from Ateliers 3S’s Cadence® range.

Elements from the Starck® range can be mixed and matched. Company headquarters by architect Jean-Malo Neroli.

The Starck® range gives architects a toolbox of solutions. Hardware store by architect Alain Boudet.

Julien Faisandier, Managing Director of Ateliers 3S

Floirac project from Ateliers 3S with Granite®

The random ribs of Cadence® give each building in the Floirac project a unique look.

Floirac project

Solar photovoltaic plants are designed to last at least 20 to 25 years. They are built in various climates (tropical, industrial, etc.), locations (sea shores, islands, etc.), or geological soils (including the most aggressive).

Supporting structures

The supporting structures for PV panels must withstand these conditions while generating minimal maintenance costs. These requirements are extremely demanding. For these reasons, ArcelorMittal offers Magnelis® - a steel with excellent corrosion resistance that is at least three times better than traditional galvanised steel. Magnelis® exhibits a self-healing effect in the event of scratches, which also improves edge protection.

Magnelis®: best in class solution

With excellent in-use properties and a wide range of feasibility, Magnelis® is one of the best in class and most cost-effective alternatives to post-galvanised steels. Since its launch in 2012, Magnelis® has been selected by many solar players around the world to provide superior protection for long-lasting mounting structures, even in the most adverse environments, and for several very large installations.

Innovations

The Magnelis® range is constantly improving, and the latest innovation is a new range specially created for rammed poles in soils.

Last but not least, the combination of Magnelis® with the new high strength steel grade S550GD-HyPer® offers additional opportunities for structural improvement for solar structures leading to reduced weight and costs.

Text: ArcelorMittal Europe Communications, Constructalia
Images: ES_SO / Shutterstock.com, Forming AG, PVH, CWF

Related link(s)

Solar panels

Solar farm

Solar panel mount

Solar panels under snow

Demand for convenient car parking is rising dramatically. However, the land available for parking is severely limited in many locations. This is making multi-storey car parks a very attractive option in city centres, near transport hubs, and at public buildings such as hospitals. To meet this demand in a cost-effective way, Kingspan, a leading building materials company, has developed a complete portfolio of solutions for car park builders. A key element is Magnelis® from ArcelorMittal Europe – Flat Products which Kingspan uses to form the deck of each level in the car park. As well as cost-effective forming and quick assembly, Magnelis® offers long-term protection against corrosion to ensure the safety and viability of parking structures.

The challenges of multi-storey car parks

Multi-storey car parks offer unique challenges for their owners. As well as providing safe and welcoming spaces for potential customers, they must withstand weathering from the elements – and the effect of de-icing salts and other chemicals which are tracked into the structure. Floors are particularly vulnerable due to the high level of moisture which enters the structure through its open sides or via rain and snow on vehicles. Moisture in the atmosphere typically condenses on the underside of the floor, making this part of the structure particularly susceptible to corrosion.

A complex product requires Magnelis®

To address these concerns, Kingspan has developed a multideck floor system based on Magnelis®. The system is quick to produce, lighter than alternative solutions, and simple to assemble on-site. “We create the deck panels by roll-forming the steel in our factory,” explains Phil Smith, Kingspan’s Managing Director for the UK and Ireland. “It is a complex product – the deck panels need to include cut-outs to ensure the concrete adheres to the steel. But Magnelis® is easy to form.”

In the final step, the ends of the Magnelis® deck panels are engineered to ensure that the concrete does not slip off as Phil Smith says: “The process involves crushing the ends of the panels slightly so that the concrete has a rough surface to adhere to. This is done about two to three weeks before the panels are installed.”

Once the steel decking panels are manufactured, they are transported to site and lifted into place. Concrete is then poured over the steel to form the deck. “In the past we have used pre-cast concrete slabs to form the deck, but this is costly,” notes Phil Smith. “Another option is to use pre-coated or galvanised steel, but the coatings on these materials are often damaged in handling, transport, and on-site. Magnelis® is the best and most cost-effective option as it does not damage easily during transport or handling on-site. And if it is damaged, the self-healing property of Magnelis® repairs any cuts or scratches that do occur.”

10-year guarantee a major advantage

A key advantage of Magnelis® for Kingspan is the guarantee ArcelorMittal can provide on request. Phil Smith explains: “By using Magnelis® we can offer a 10-year guarantee on our decks. That can be extended up to 20 years depending on the location of the car park and the thickness of the Magnelis® coating. Currently we use Magnelis® ZM310, but we are working with ArcelorMittal to test Magnelis® ZM430.”

Kingspan utilises ArcelorMittal’s technical support at all stages of the project. “We are quite often involved in projects where the environment is aggressive such as swimming pools, car parks, and installations which generate energy from waste,” says Phil Smith. “In these projects we involve ArcelorMittal during the design phase to ensure we are selecting the right materials. ArcelorMittal also organises R&D workshops to Kingspan to help us get the most from their offer.”

ArcelorMittal’s dedicated Client Technical Support (CTS) personnel also provide a direct link between the customer and the steelmaker. They connect the customer’s technical team to ArcelorMittal’s support and R&D teams to provide quick feedback and advice on technical questions.

Sustainability at every step

Kingspan offers a complete range of solutions for multi-storey car parks including the Magnelis® composite decks explains Phil Smith: “We also have barrier protection systems, perforated facades, and solar panels for the top floor so the car park can generate energy for lighting, ventilation, and electric vehicle charging points. Our goal is to create sustainable solutions at every stage. And steel is our material of choice to reach this goal.”

That commitment to sustainability has seen Kingspan switch both of its production centres in the UK to 100 percent renewable energy. Kingspan is also one of only 130 companies to make the CDP A-list (formerly the Carbon Disclosure Project), a position the company has held since 2016.

About Kingspan

Kingspan is a global leader in high-performance insulation and building envelopes. Originally founded in Ireland in 1965, Kingspan now operates in over 70 countries around the world and employs more than 14 000 people. The company manufactures a range of complementary building envelope solutions for both the new build and refurbishment markets.

More info: www.kingspan.com/gb

Text: ArcelorMittal Europe Communications
Images: Raised Floor Solutions

Related link(s)

Multi-storey car parks can accommodate a large number of vehicles in a relatively small space

Magnelis® can resist the corrosive effect of moisture which accumulates underneath each deck

Kingspan engineers the ends of each Magnelis® panel to ensure maximum adhesion of the concrete layer

Kingspan uses Magnelis® in their multi-storey car parks

Kingspan partnered with MetparkUK Ltd to install the Magnelis® decks in multi-storey car parks

Kingspan uses Magnelis® in their multi-storey car parks

Phil Smith, Managing Director of Kingspan in the UK and Ireland

Multi-storey car park banner

A multi-storey car park under construction in Manchester, UK

As ArcelorMittal Europe’s reference website for steel in construction, Constructalia is all about putting information at your fingertips! With inspiration for architects and support for engineers, Constructalia is designed to provide engineers, architects, and every decision maker in construction projects with all of the relevant information and tools for their activities.

What are the most popular features for our valued users?

Our close collaboration with the different Business Units of the ArcelorMittal Group allows us to offer a complete overview of the company’s products and activities throughout many different areas in the construction industry.

Constructalia is packed to the brim with the latest innovations and developments in our steel solutions.

Some of our most popular features include:

• our document library filled with technical guides, brochures, EPDs, etc.
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Text: Constructalia
Images: ArcelorMittal

The optimisation of construction materials, including the size reduction of structural system components, is fundamental in the modern construction of high-rise buildings. Composite structural components consisting of concrete and steel are a sustainable solution. This research paper investigates the use of composite mega columns, with hot-rolled steel sections fixed in concrete, as vertical structural systems. Tests were conducted to explore maximum capacity, displacements, stress distribution, ductility, and stiffness, culminating in suggested simplified design methods based on European, Chinese, and American codes.

Paper abstract

“Steel reinforced concrete (SRC) columns are widely used in high-rise buildings, since they provide larger bearing capacity and better ductility than traditional reinforced concrete (RC) columns. This type of structural system is not currently explicitly addressed in the actual design codes. The paper aims at presenting the behaviour of a new configuration of mega columns - isolated steel reinforced concrete (ISRC) columns. A two-phase test was conducted on scaled ISRC columns designed based on a typical mega column of a super high-rise building. Phase 1 of the study includes six 1/4-scaled ISRC columns under static loads: every two of the specimens are loaded statically with the eccentricity ratio of 0, 10%, and 15%, respectively. Phase 2 of the study includes four 1/6-scaled ISRC columns under quasi-static loads: every two of the specimens were loaded under simulated seismic loads with the equivalent eccentricity ratios of 10% and 15%, respectively. A finite element analysis (FEA) was conducted as a supplement to the physical tests to provide a deeper insight into the behaviour of “mega columns”. An extended Plastic Distribution Method is defined to evaluate the capacity of the specimens. The method is based on simplifications similar to those proposed in EC4 [1]. The scope of this latter standard is limited to the consideration of one single steel profile. The method is validated by comparisons with experimental and with numerical simulation results using advanced finite element programs, showing a good accuracy in results.”

Research paper, abstract, and images: © Ernst & Sohn Verlag für Architektur und technische Wissenschaften GmbH & Co. KG, Berlin
Intro: Constructalia

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Performance and capacity of composite mega columns with encased hot rolled steel sections

Discover what's new in Constructalia's Document library! We've added the newest brochures for ArcelorMittal's Sections and Merchant bars, HISTAR®, ACB® and Angelina® beams with large web openings, and high-rise buildings.

Our Document Library is filled with catalogues, technical guides, reports, and much more. All publications are about ArcelorMittal products or steel in construction.

Click here to download these new brochures and more: Document library

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HISTAR® technical brochure

ACB® and Angelina® beams: A new generation of beams with large web openings

Sections and Merchant bars sales programme

High-rise buildings