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World’s Largest BMUs (building maintenance units)

A few months ago, I wrote a post about my involvement with the commissioning of the new building maintenance unit (BMU) at the Duke Energy Building in Charlotte, North Carolina.

At the time, it was thought that the Duke Energy BMU, with a telescoping boom that extends to approximately 130 feet, was the second largest BMU in the world.

And then I received a comment from a reader inquiring about a “World’s Largest BMU” list.  After a quick Google search, I found that no such list exists.

So I started asking around—it helps to know some of the foremost facade access consultants in the world—and got some great information from a colleague in our Lerch Bates New York office Don Zeni.

The world’s largest BMU (according to overall jib length) goes to 88 Philips Street in Sydney Australia.  This unit has a 5 stage jib with a maximum outreach of 156’-7” (47.75m) and an 18 foot (5.5m) vertical mast stroke.  In addition the Philips Street unit luffs up 45 degrees and down 25 degrees and weighs a whopping 250,000lbs.

Below is a short list of large BMU’s (according to jib or boom length).

Unfortunately there is no “official” ranking so this info is a best educated guess.  I’m certain there are more in the 40m – 45m range.

88 Philips Street – 156’-7” (48m)
Sydney, Australia – CoxGomyl

Dubai Jewel Tower – 154’-2” (47m)
Dubai, UAE – XS Platforms

EEUU – 137’-9” (42m)
Houston, TX (Largest in US) – Gind

One New Change – 134’-6” (41m)
London, UK – CoxGomyl

One Mellon Bank – 129’ (39.3m)
Pittsburgh, PA – Tractel

Duke Energy – 124’-7” (38m)
Charlotte, NC – CoxGomyl

LB in Best of What’s New

Question: what do Las Vegas and Dubai have in common? (no, not that)

Answer: two Lerch Bates projects that made Popular Science’s Engineering Best of What’s New lists.

Veer Towers in Las Vegas, Nevada and Burj Khalifa in Dubai, UAE.

They were both honored with Popular Science magazine’s Best Of What’s New 2010 Engineering Award.  In addition, Lerch Bates Inc. was commissioned to lend its vertical transportation and facade access consulting expertise to both projects.

Veer Towers is part of the new MGM City Center, which has 250 elevators and 60 escalators. Of this total, Veer Towers has 8 elevators; four in each building.

The Burj Khalifa is the world’s tallest building and has the fastest double deck elevators at 1,969 feet per minute.  It also has the highest operating BMU (building maintenance unit) in the world, working at 2,345 feet.

And that was just for 2010. Let’s see what we have cooking for 2011.

Lerch Bates featured in Popular Science Best of What's New 2010 Engineering list.