Pumped 8,479 yards of slurry mix into an old 14-foot square concrete pipe that was re-lined with a 9-foot steel round pipe for new chiller towers.
We encased this steel pipe with the slurry mix; averages 350 yards a day. We pumped from within the pipe to 3- inch ball valves located every 300 feet.
There were 4 sections: 2 supplies and 2 returns. The farthest was a 1,635-foot run of 3-inch pipe. The concrete supplier was a mix on-site plant. The job was completed in 24 work days.