A project to build a 20 -story hospital tower on the Henry Ford Health Campus in Detroit has first marked worldwide with a four -column columns of W14x1000 steel installed in the support nucleus at the base of the portion of the Hospital Tower.
The columns, each with a weight of 1,000 pounds per square meter, were installed on July 1 in the Hospital Tower, which will cover 1.2 million square meters and is the anchor of the destination: Grand, an expansion of $ 2.2 million from the hospital campus under construction of the Barton Malew-Turner-Dixon-Dixon ” From the part of the part of the part of the part of the part of the part of the part of the part of the part of the part of the part of the part of the part of the part of Gayanga.
The columns were produced by the Luxembourg -based steel producer based in Luxembourg Arcelormittal, the only company in the world that currently produces columns in this form and form Jumbo.
“What makes this so special is the size of the column and the fact that it is a coiled manner,” says Joseph Dardis, chief of construction acting in Arcelormittal. “It is very difficult to do it so great in a solid and coiled form. This was definitely a feat of research and development.”
Describing the process in non-technical terms, Dardis says “you are taking a semi-liquid type [steel] Form it and crush it between two giant pieces of machinery to reach its final condition. Much strength in the form comes from the shooting process. “”
Mark Braekevelt, principal director of steel and shops for Barton Malow, says the W14X1000 column is “the ideal solution to support extreme vertical and lateral loads”.
He says that the column adapts to a health care tower that has higher requirements for wind and seismic burdens and that it needs to have a lot of technology and health equipment.
“Before this form was available, we would have [used] More than one piece made of tailor made where we are joining several pieces to form a column, which requires much more store welding and a lot of manufacture. ” Braekevelt
He says. “It is much more intensive at work to create a custom -made steel piece.”
W14BY1000 columns – which Dardis says they will be useful in various types of projects and geographical areas, such as the west coast prone to the earthquake – would not save by weight, but met other needs of the project.
“Henry Ford wanted bulk,” says Dardis. “They needed Mass. So I didn’t necessarily saves weight but saved labor.”
Each column, made with 98% recycled scrap with the technology of electric arc electric ovens (EAF), was less expensive than it would have been a tailor -made piece, according to Dardis.
In addition to creating in an EAF and not an explosive oven that coal took place, the W14 strategy for 1000 saves into an embodied carbon compared to a tailor-made column, “because when soldering the plates in a section, the plates generally have a higher incarnated carbon.” Dardis says.
The columns were approved in December 2023 by the American Society for Testing and Materials (ASTM). They are not yet included in the steel construction manual of the American steel construction institute, which leaves every six years.
“It’s in our database,” he says Chris Raebel, Vice President of Engineering and Research at the American Institute for Steel Construction (AISC). “It is available to use it. It will be included in our next manual that comes out in 2028”.
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Arcelormittal created the form of the Jumbo column to attend to the best needs in the market, especially when he looked Demand for the market of the commercial office space.
“We really made an effort in recent years to market a little different with the absence of a commercial office [demand]”, Says Dardis.” Health care was a natural way because a ten -story hospital could have the same column requirements as a 30 -story office based only on the complexities of a healthcare project. “”
Competition is another reason why Arcelormittal created the W14x1000 column.
“We have always shot the largest forms in the world, but other steel producers catch us up,” he says. “We continue to go larger.”
The columns were sent from Luxembourg to Sippal Steel to Pittsburgh, bread.
The W14 X 1000 is down to Henry Ford Health in Detroit.
Photo courtesy of Barton Malow
Arcelormittal believes that there is even larger steel columns.
“We know that there is a market for this and a market to go larger [with the columns]”Dardis says.” The engineers and the steel community are fascinated by the size that this thing is. ”
Destination Grand is also the first health project in the world to incorporate sections A913 Grau 80, which Arcelormittal says are the strongest ways of coiled steel in the world. Usually used in high office towers, A913 is a structural steel of low resistance and low alloying produced by a process of authorization and self -control. Grade 80 means you have a minimum performance force of 80 KIPS per square inch. Ksi It is a unit of measure for stress or pressure, defining the amount of force that a material can support before deforming or breaking. A KIP is equivalent to 1,000 pounds of pressure, so it is 80 kSI steel and is confirmed that it has a performance of 80,000 pounds. Its high performance also reduces global steel tonnage and can reduce projects costs.
Seeing the first columns of W14x1000 installed in Henry Ford, which only took minutes to complete -it was “incredible”, Dardis adds “the energy that was amazing. And there was a lot of excitement to see the story.”
“This is another option in the designer’s toolbox so that they can provide an efficient client structure,” says Raebel. “It will always be the correct answer? Maybe not. But it is certainly a possibility and I am sure it will be considered for projects where they need additional beef in the columns.”
Braekevelt also sees great interest in the construction industry in this new form.
“When experienced people listen to” W14by1000 “their ears are set up and their eyes light up,” he says.
