Some of the supports would be steel W beams, others would be I-beams or tube steel. Each support would be sized to address the gap (height differential) while being strong enough to bear the load.
That would work for most of the T-columns – those that were off by 18 inches or less. The others required the concrete contractor to install new hammerheads at the correct elevation.
“It was a good solution,” says Dominic LaRocca, B&K’s site superintendent on the project, “but for it to work without affecting the project timetable, we needed a way to organize a lot of different activity at once.”
Meaning: Some of our team members would proceed with pipe installation on the T-supports that had the right elevation, while other members corrected the supports that could be fixed. At the same time, the concrete contractor would replace hammerheads on the columns that were way off.
“Coordinating all of this probably saved the client a delay of a month and a half to replace the T-columns,” says Michael Patman, project manager. “The teamwork and the communication of the parties involved made all the difference.”
So did the prefabrication approach. “All of the pipe was prefabricated in Atlanta and shipped on tractor-trailers,” LaRocca said. “The accuracy of that fabrication was key to our success.”
“Success” meant ensuring that the work was turned over on schedule, despite having to rework the installation sequences.