It's a Bird!? No, It's a Bright Yellow Crane

September 22, 2017

A bright yellow crane was installed at Mercy Hospital this summer to help contractors move heavy loads of materials for the 7-story tower now under construction. We wanted to know a little more about this important piece of equipment, and Jamie Dorland of McCarthy Building Companies Inc. filled us in.

  • What type of crane is it? It is a 200T Kobelco crawler crane with luffing boom
  • How long did it take to install the crane on site? Two days.
  • Is it anchored to the ground somehow? No, it moves on tracks.
  • How tall is the crane? 300 feet (140 feet for the main boom; 160 for the luffer )   
  • Why so tall? To reach the upper portion of the building with the weight capacity required.
  • How many people does it take to operate? One. But there needs to be signal person and a rigger to support hoisting.
  • How much can it lift? 36,000 pounds
  • Is it used daily? Yes.
  • How long will it be on the site? Targeting 18-20 months.
  • What’s the flag on top? An orange and white checkered flag required by the Federal Aviation Administration.
  • Is the crane safe? Yes.
  • Do you take it down in bad weather? The luffing jib is lowered every night and when wind gets over 25-30 mph.
  • There’s still a small crane on site. Why do you need two? To perform hoisting needed for concrete and steel structures as well as material needed for other trades (mechanical, electrical, framing.)
The construction site for Mercy Hospital Northwest Arkansas' new 7-story tower.

The construction site for Mercy Hospital Northwest Arkansas' new 7-story tower.

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