Milwaukee, WI
Baird Center’s structure is engineered for big boats and ‘Jump Around’ – Milwaukee Business Journal
Mike Vogel’s structural engineering team at Graef designed the Baird Center to be strong enough to carry the weight of a boat show, and stiff enough to avoid vibrations causing a “Jurassic Park” ripple effect in wine glasses if a crowd jumps in unison to a live band’s hit song.
Those are just some of the standards used to engineer the addition onto the downtown Milwaukee convention center. Some of the structural challenges are even more stringent than the demands on a typical arena, for example.
Vogel is a principal and senior structural engineer for Graef, the Milwaukee-based consultant that handled that work for the $456 million Baird Center expansion that is set for a mid-May grand opening.
“It’s really fun to be a part of helping solve society’s challenges, whether it is a large vertical construction project or designing a robot or machine to help us,” Vogel said.
Heavy loads
The addition is designed to feature big, open spaces for its two major convention halls, and Vogel’s team tested to make sure the structure could handle the weight of those events.
“This is long-span that has to take expo center loads, which are gigantic,” Vogel said. “You can imagine a boat show, or a hot tub show with a bunch of tubs filled with water.”
That means the floors of the convention hall are built to handle more weight than, for example, the roof of a typical sports arena. General building code standards require the roof of an arena to handle the weight of its own materials – called “dead weight” – but also up to about 30 pounds per square foot of snow buildup on top. The convention center’s exhibit spaces, by contrast, must handle up to 350 pounds per square foot in addition to their own dead weight, Vogel said.
“That gives them the maximum flexibility to attract events the community can appreciate,” he said.
Graef principal and senior structural engineer Mike Vogel signs a ceremonial beam for the Baird Center expansion.
Bad vibrations
It’s a whole different challenge to stop those stout floors from vibrating as people walk around or dance, or as bands play music with heavy bass.
That was another factor to consider, since the Baird Center’s second-floor ballroom is directly above its exhibition hall.
“You don’t want to excite that floor so that the lights below start moving,” he said.
Stopping that vibration is a separate challenge in addition to designing a structure to support weight without collapsing, Vogel said. Wisconsin Center District officials wanted the ability to have dinner and dancing in close proximity without glasses vibrating on tabletops, he said.
“Low bass starts to resonate with structure and can excite a structure so it can start to want to move harmonically,” Vogel said. “There’s different criteria if you have a concert and you have a bunch of people doing ‘Jump Around’ and all bouncing in unison. That will also excite a structure. That is very different than somebody walking on the floor.”
The depth of the structure contributes to its stiffness, and also more structural mass will dampen vibrations, for example.
Big numbers
Vogel ran through some of the stats on the materials that comprise the Baird Center’s structure.
It has 6,000 tons of structural steel, or about the equivalent to 12 fully loaded Boeing 747 airplanes. That includes more than 569,069 separate pieces of structural steel, held together by 169,152 structural bolts.
Think of those as the pieces of a Lego set or an Ikea table that haven’t been assembled. Graef designed the structure and created the instructions telling builders how to put them together. Bringing that work in house was among Vogel’s initiatives at Graef that can cut weeks off a project schedule. During the original convention center’s construction, paper design drawings were sent to an outside firm that drew up the assembly instructions.
Builders on the Baird Center expansion used those instructions to tell steel suppliers which parts to ship to the site and when they’d be needed.
“It comes out to about four truckloads, twice a week,” Vogel said. “They get four truckloads of steel. They erect that. They get another four truckloads. They continue until they are done.”
Milwaukee, WI
Landmark Credit Union Live officially opens in Milwaukee
MILWAUKEE – Landmark Credit Union Live, Milwaukee’s newest concert venue, opened its doors on Friday. And with the Bucks playing next door at the same time, the whole area was hopping.
What they’re saying:
Fans flocked to Fiserv Forum to watch the team play the New York Knicks, and music lovers stood in line to see Rainbow Kitten Surprise on the opening night of Landmark Credit Union Live.
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“Very busy, very crowded the bars and restaurants,” said Ashley Evans. “That’d be great to add to the city again, to continue to bring more tourists out.”
“This is going to be amazing. I’ve been wanting to see them for a very long time, so I’m very excited,” said Rachel Lococo.
Fans line up for the official opening of Landmark Credit Union Live
Landmark Credit Union Live can host up to 4,500 people. Friday night’s show was sold out, drawing fans from places like Chicago, Minnesota, Iowa and elsewhere.
“Some people have driven from Indiana, so there’s a lot of people coming out tonight,” said Kade McCane, who came from Madison. “Honestly, really exciting to be among the first people who get to be there, and for RKS to be among the first people who will ever perform here, I hope this venue gets huge and big and becomes very popular.”
The excitement was felt all around Milwaukee. Even the competition rolled out the welcome mat.
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“Our goal to grow as a city means that a lot of things have to happen. This is the very, tiny, small work that has to happen,” said Gary Witt, president and CEO of The Pabst Theater Group, which runs six nearby venues.
“The introduction of any new business in the city, especially one that pays attention to the fact that we have spent 24 years growing the live culture economy in the city of Milwaukee, says to me that we’ve done our job.”
Witt said live entertainment is an industry Milwaukee’s economy has been dependent on coming from visitors like those who turned out Friday.
The Source: FOX6 News interviewed the people in this story and referenced prior coverage related to the opening of Landmark Credit Union Live.
Milwaukee, WI
Sheriff’s Office backpedals on controversial facial recognition deal
Drone view shows Milwaukee’s County Courthouse
Built in 1931, Milwaukee’s historic County Courthouse is in dire need of repair and upgrades. Here’s a recent drone view of the MacArthur Square building.
The Milwaukee County Sheriff’s Office will not move forward on a potential deal to use facial recognition technology, Sheriff Denita Ball announced Friday.
In a statement on Feb. 27, Ball said after “thoughtful evaluation” and “meaningful dialogue” with community stakeholders and leaders, she decided to stop pursuing a contract with Biometrica, a Las Vegas-based company whose technology allows authorities to compare photos to a large database of photos for matches.
“While we recognize the potential of this software as an investigative tool, we also recognize that trust between the MCSO and the people we serve is important,” she said.
“My discussions with local advocates highlighted valid concerns regarding how such data could be accessed or perceived in the current national climate. This decision is not a retreat from innovation but rather an understanding that timing matters, too,” Ball said.
The Milwaukee Journal Sentinel reported on Feb. 17 that the Sheriff’s Office was on the verge of signing off on the use of facial recognition technology after news broke at a community advisory board meeting held by the office.
The update on the office’s sign-off on an intent to enter into a contract with Biometrica blindsided local officials and advocates because it contradicted earlier claims that the office had not moved forward with a controversial contract.
At the time, supervisors on the county’s judiciary and legislation committee called for more information from the Sheriff’s Office about the nature of the then-potential contract.
Supervisor Justin Bielinski, who chairs the committee, said Ball’s decision to step away from the deal was good news, but said he was still feeling wary.
“I would like to see more I guess,” he said of the two paragraph statement from Ball. “At what point would she reconsider, right?”
County Executive David Crowley, who is running for governor as a Democrat, had also voiced concerns about a possible contract when news came to light earlier this month.
After learning of Ball’s decision to not move forward with Biometrica, Crowley thanked community members who voiced concerns about facial recognition technology, saying he will “continue doing everything in my authority to ensure our residents’ First Amendment rights, civil liberties, and personal data are protected.”
In recent months, Milwaukee politicians and residents rebuffed local law enforcement’s efforts to pursue the use of such technology at both the city and county levels, with many citing concerns over racial bias and unjust surveillance of residents.
The Milwaukee County Board of Supervisors voted last summer to recommend the development of a policy framework for the use of facial recognition technology as worries about its use by local law enforcement grew in the community.
The policy emphasized that the use of such technology doesn’t “suppress First Amendment-related activities, violate privacy, or otherwise adversely impact individuals’ civil rights and liberties,” and called for a pause on acquiring new facial recognition technology until regulatory policies were in place to monitor any existing and new surveillance technology.
In early February, the Milwaukee Police Department paused its pursuit of facial recognition technology after almost a year of pushback from activists and some public officials at public meetings. The department also noted that community feedback was a part of its final decision as well as a volatile political climate amid the federal government’s immigration crackdown.
(This story was updated to add new information.)
Milwaukee, WI
Milwaukee judge calls out marijuana odor in courthouse
A Milwaukee County judge on Thursday, Feb. 26, criticized the smell of marijuana inside the courthouse during a sentencing hearing, calling it inappropriate and illegal as visitors described the odor as common.
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