Steel in the News
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Posted by Tom Klemens on February 18, 2011 at 12:32 PM.
As the crew on the ground readies each piece of structural steel to be lifted into place, they also attach the right type and number of bolts to the connection place.
Loveland, Colo.-based LPR Construction Company is erecting the steel framework for the new Marlins Ballpark in Miami. Working 150 ft or more in the air, nobody wants to have the wrong size bolts and nuts, or come up short. One way crews avoid that is by sending a daisy-chained set of bolts aloft attached to the steel.
Using a bolt bag or “stuffing” a bolt and nut assembly into each hole are other common ways to get bolts and nuts up to the ironworkers. But bolt bags can be difficult to tie off on a project like this, said LPR’s project superintendent Curt Ketcherside, and stuffed bolts have to be removed when the piece gets to its location.
“The connectors are stuffing out a lot of the connections as they are hanging iron,” Ketcherside said. “Double handling bolts in the air increases chances of bolts being dropped, but we have not had any bolts dropped to the ground using tie wire. They have been leaving a long tail on the wire that can be tied off almost anywhere. Then they take one bolt at a time off the wire starting at the bottom.”
“We also have a lot of different size bolts,” Ketcherside added. “Having them attached to the points cuts down on rework because we don’t have the wrong size connection bolts stuffed.”
For a glimpse at another aspect of the project, view the January 28 Steel in the News post by clicking here.
You can also see what’s going on via a webcam high above center field by clicking here.