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Posted on 8/11/17 at 6:35 am to BottomlandBrew
I found this interesting, subsidence from 1895 till now. The black line is the land in 1895 and the red is now. I think the high point is the banks of Bayou St John and the red line outside the lake is the land past Robert E Lee that Huey Long built.
Posted on 8/11/17 at 6:37 am to JudgeHolden
Worked on a study for the plant like 10 years ago when I was at URS. We recommending replacing all that antique 25Hz equipment.
Posted on 8/11/17 at 6:44 am to Placebeaux
Managing Water in New Orleans
Here's a video discussing the urban design changes. That's not to take away that the pumps need work, too, but the reliance on pumps as your only control is quixotic.
Here's a video discussing the urban design changes. That's not to take away that the pumps need work, too, but the reliance on pumps as your only control is quixotic.
Posted on 8/11/17 at 7:11 am to JudgeHolden
quote:
What's the Engineering Solution to NOLA Pumping?
Don't build below sea level.
Posted on 8/11/17 at 7:12 am to kywildcatfanone
Blame it on Lee Podium
Posted on 8/11/17 at 7:16 am to JudgeHolden
I would simply purchase SAP and input all critical equipment within then infrastructure. Develop a quality assurance and mechanical integrity program for each piece of critical equipment. Document every inspection, address issues and track performance (equipment and personnel).
Outdated equipment would be phased out in a 3-5 year window and upgrades would only be allowed from reputable and licensed engineers retained by the city .... and liable for their work.
Outdated equipment would be phased out in a 3-5 year window and upgrades would only be allowed from reputable and licensed engineers retained by the city .... and liable for their work.
Posted on 8/11/17 at 7:20 am to JudgeHolden
Vote repliblican. But we don't have those running for office in New Orleans.
Posted on 8/11/17 at 7:23 am to BottomlandBrew
quote:
Managing Water in New Orleans
The greenroof thing is something I always wondered about while my mind drifts in Houston traffic. There are countless arches of space that could be used.
Who doesn't want more trees too?
Posted on 8/11/17 at 7:40 am to JudgeHolden
Design and installation doesn't mean crap if the facilities are not maintained. This is why you hire qualified people and not your buddies. I still can't believe the director doesn't have any background with pumping stations and stormwater management. This seems to be more of a case of negligence by the City than it does engineering.
Posted on 8/11/17 at 7:51 am to JudgeHolden
quote:
This is legit what I am trying to figure out. Is it undercapacity in the system, or some other design problem? Or is it just impossible?
The current capacity I saw quoted this weekend was 1 in of rain in the first hour, followed by 0.5 in of rain per hour afterwards.
Here is the average monthly rainfall:
Based on those numbers, the current capacity is adequate for most regular storms. However, as evidenced by the levels of street flooding frequently seen during heavy rains, I'd say that the capacity should be improved. Unless, prior street flooding has been a result of the pumping system not operating at capacity.
Posted on 8/11/17 at 7:51 am to JudgeHolden
Close the floodgates and reverse the direction of the outflow pumps. Wait.
Posted on 8/11/17 at 8:02 am to JudgeHolden
quote:
Or is it just impossible?
I wouldn't use the word impossible, but perhaps too pricey to be realistic.
That being said, it doesn't matter in this instance. Whatever system you have must be working at 100% to even have a chance. That's the issue here.
Shitty system? That's one thing. Shitty system that doesn't even run? That's another level of incompetence.
Posted on 8/11/17 at 8:06 am to Bmath
Note that the 100 year storm precipitation rate for a 24 hour period is 13-15 inches.
Also, the Orleans Parish pumping stations are responsible for clearing 60,000 acres of land. 1" of rain over that area is 29 million gallons of water. Increasing capacity significantly isn't as easy as adding a few more pumps. The 5,400 HP pumps in the canal pumping stations aren't cheap or easily installed.
Interesting Katrina lessons learned on pumping stations on pages 51-53 here:
LINK
Also, the Orleans Parish pumping stations are responsible for clearing 60,000 acres of land. 1" of rain over that area is 29 million gallons of water. Increasing capacity significantly isn't as easy as adding a few more pumps. The 5,400 HP pumps in the canal pumping stations aren't cheap or easily installed.
Interesting Katrina lessons learned on pumping stations on pages 51-53 here:
LINK
This post was edited on 8/11/17 at 8:18 am
Posted on 8/11/17 at 8:46 am to baseballmind1212
quote:
Perform routine maintenance and not buy pumps from a politically active (and only) vendor in the area. Oh, and find people who actually have the knowledge and background to ensure said pumps and turbines we're in working order.
I imagine this would probably be out of the PM's hands, and might get him fired.
This was all arranged before hand.
Posted on 8/11/17 at 8:49 am to JudgeHolden
quote:
What's the Engineering Solution to NOLA Pumping?
It doesn't exist. It must not. Mitch said yesterday that he had been working since he took office over 6 years ago to fix the pumping station wiring and that didn't get done and he's raised a record amount of funding and had an incalculable amount of meetings specifically to discuss the drainage and pump issues and the were never able to enact one solution.
It must not exist.
Despite the all of Mitch's "record funding", "nonstop honest hardwork to reform and improve the SWB", "countless meeting to discuss infrastructure",. "tireless effort to fix the power station", etc... Despite all of that we barely had 50% pumping capacity at a one of the stations, 16 pumps out, multiple others down for maintenance, unmanned stations, faulty wiring fires, clogged catch basins, etc...
Our mayor ensured us he and his entire staff have been working tirelessly for 7 straight years to fix these problems and haven't been able to. So they must be unfixable.
This post was edited on 8/11/17 at 8:55 am
Posted on 8/11/17 at 9:08 am to JudgeHolden
Don't build a city in a flood plain and expect it not to flood.
Posted on 8/11/17 at 9:16 am to JudgeHolden
Posted on 8/11/17 at 9:21 am to Spirit of Dunson
quote:
Also, the Orleans Parish pumping stations are responsible for clearing 60,000 acres of land. 1" of rain over that area is 29 million gallons of water. Increasing capacity significantly isn't as easy as adding a few more pumps.
Someone's math is way off. 1 inch of rain over 60,000 acres is 1.6 billion gallons. There is not a machine in this world that can pump that in an hour.
I'm guessing the 60,000 acres number is wrong?
Posted on 8/11/17 at 9:24 am to ItTakesAThief
They didn't. Read history, and look at maps.
City (FQ) and plantations built on natural ridges/levees...along the Mississippi River levee, along Bayou Metairie, Bayou St. John, Bayou Gentilly. City grew along the ridges until late 19th century when pumps were invented and low swamp lands were drained in the middle of the area.
City (FQ) and plantations built on natural ridges/levees...along the Mississippi River levee, along Bayou Metairie, Bayou St. John, Bayou Gentilly. City grew along the ridges until late 19th century when pumps were invented and low swamp lands were drained in the middle of the area.
This post was edited on 8/11/17 at 9:26 am
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