Thursday, September 11, 2008

We Found Rock!

It was anticipated that rock would be a difficult obstacle in the renovation process on the upper holes and it turns out we were right. 285 feet into the new pipe being installed we encountered our first rock problem.

The rock was hit a depth of 60”, unfortunately we needed to go another 4” deeper in order to achieve a depth the four feet of cover over the mainline pipe. At first the excavator tried scraping off the layers of rock, but this did not work out very well.

Next a rock hammer was brought in to chisel away at the stone which it did, but very slowly. Anytime an obstacle like rock is hit the production goes way down until the right equipment is on hand to properly deal with it.