I mentioned below about the dewatering survey we are doing starting yesterday (Tuesday) at 6:30 AM. It was supposed to last 24 hours, or until about 7 AM Wednesday AM. I worked the first 11 hours or so, then Todd took over and was still working at noon today (5 hours past the normal 24 hours).
Then the repair party realized that a major storm is coming that will flood the chamber, so they shut down and will try again next week.
http://water.weather.gov/ahps2/hydrograph.php?wfo=pbz&gage=whlw2&view=1,1,1,1,1,1,1,1
Not flood stage, but it will overflow the small temporary dam they set at the downstream end of the large lock chamber. This is one of the most tedious surveys you can imagine: measuring movement at nearly 60 pins on 2 1200' walls over and over again. Each set takes about 2.5 hours.
Whell, during this poorr time economicaly, well it is an extra day of pay!
🙂
(Try the bright side of it)
De-watering projects are a real money maker.
I worked on a few for the COE here.
24/7 multiple crews etc. Thus was back in the old days with 4 man COE crews
One that was on at an historic lock in St. Martin Parish, they encountered large debris near the gates during the beginning of the dewatering phase and had to call in divers. We stood around for a day or so twiddling thumbs.
I guess you will cha-ching with the mob and de-mob time plus the extra hours.
Post some pictures when you are done.
One of the last de-watering that I did on the IHNC in New Orleans, the COE was just starting to monitor with GPS and were using the project as a study project.
We were using TS with parasols etc. and steel chaining and shooting distances.