- My Forums
- Tiger Rant
- LSU Recruiting
- SEC Rant
- Saints Talk
- Pelicans Talk
- More Sports Board
- Fantasy Sports
- Golf Board
- Soccer Board
- O-T Lounge
- Tech Board
- Home/Garden Board
- Outdoor Board
- Health/Fitness Board
- Movie/TV Board
- Book Board
- Music Board
- Political Talk
- Money Talk
- Fark Board
- Gaming Board
- Travel Board
- Food/Drink Board
- Ticket Exchange
- TD Help Board
Customize My Forums- View All Forums
- Show Left Links
- Topic Sort Options
- Trending Topics
- Recent Topics
- Active Topics
Started By
Message
re: What's the Engineering Solution to NOLA Pumping?
Posted on 8/11/17 at 9:25 am to JudgeHolden
Posted on 8/11/17 at 9:25 am to JudgeHolden
quote:this issue isnt an Engineering issue. Just saying.
What's the Engineering Solution to NOLA Pumping?
0
Posted on 8/11/17 at 9:33 am to Spirit of Dunson
quote:i didnt think the regular canal pump stations are that big. The Belle Chasse pump station has 11 5500 hp motors. those smaller stations dont look big enough to house one of these.
The 5,400 HP pumps in the canal pumping stations aren't cheap
This post was edited on 8/11/17 at 9:35 am
Posted on 8/11/17 at 10:20 am to PrivatePublic
quote:I got that number from the Army corps of engineers report (page 36). I just redid the math, and you are correct.
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?
1 acre = 43,560 square feet
1 inch of rain = 0.083 ft of rain
60,000 x 43,560 x 0.083 = 217,800,000 cubic feet or 1.63 billion gallons of rain.
However, that same report says that the 23 pumping stations in Orleans pre-Katrina were designed to evacuate 48,900 cfs of rain, and that is 81% of the above volume. So maybe it is accurate?
Or maybe we shouldn't trust the army corps of engineers!
Posted on 8/11/17 at 10:35 am to JudgeHolden
Go to the Netherlands with a blank check.
Posted on 8/11/17 at 10:37 am to JudgeHolden
Design wise the pumps use 2000 year old Archimedes Screw Pump design. It's what turns the screws.
Relying on 25 hz power is a huge issue.
Relying on 25 hz power is a huge issue.
Posted on 8/11/17 at 10:42 am to Spirit of Dunson
quote:
However, that same report says that the 23 pumping stations in Orleans pre-Katrina were designed to evacuate 48,900 cfs of rain, and that is 81% of the above volume. So maybe it is accurate?
Most designs are based on a basic % capacity that is less than 100%
My guess is that this 48.9K cfs number is max capacity.
When working with variable conditions, you have to work in safety factor to account for major rain events and/or parts of the system going down in order to maintain a certain removal rate.
Buy hey. What do we know?
Posted on 8/11/17 at 10:49 am to Rouge
quote:Come on, man. You know I know that.
Most designs are based on a basic % capacity that is less than 100%
I quoted that number since I thought that it backed up the 60,000 acre number. 80% of the 1 inch of rain per hour number seemed about right to me. Note that this report was with pre-Katrina design assumptions.
quote:
Buy hey. What do we know?
This post was edited on 8/11/17 at 10:51 am
Posted on 8/11/17 at 10:56 am to Napoleon
quote:Dont think they do great stuff. a lot of their stuff was designed by American Firms. Their goal is to make things eco friendly and innovative which isnt efficient with what we do here. but the flooding is their #1 threat so they appropriate a ton of money to it. US doesnt.
Go to the Netherlands with a blank check.
What is cool though is the dutch's surge system is designed for the 10,000 year event. the NOLA system is designed to the 100 year event with resiliency checks to the 500 yr event.
This post was edited on 8/11/17 at 10:58 am
Posted on 8/11/17 at 11:05 am to JudgeHolden
quote:
What's the Engineering Solution to NOLA Pumping?
Same rule that has applied for over a century. Keep the fricking pumps operable.
Posted on 8/11/17 at 11:10 am to JudgeHolden
quote:
If you were project engineer with a reasonable budget (and your own hand picked staff), what would you do?
Blow the levees including the old river control structure, let mother nature and mother ocean take it's course and reclaim the land. Let the Mississippi take the course it wants to down the Atchafalaya and start to rebuild the coastline.
Sorry to upset, but you asked what I would do.
This post was edited on 8/11/17 at 11:16 am
Posted on 8/11/17 at 11:11 am to Napoleon
quote:
Go to the Netherlands with a blank check.
Interestingly enough when I was working out on the Outfall Canal pump stations, we had the Minister of Water and his team from the Netherlands come in town to learn from the practices we were implementing for flood control.
Posted on 8/11/17 at 11:36 am to JudgeHolden
You can always engineer higher capacity systems. But that requires more money and more land.
I would make sure everything we have works and slowly modernize the system. Modernize the pumps, change over to 60 Mhz technology.
Provide better gauges in the canals and noted high risk areas, that provide real time mapping (Harris County does this).
Keep everything maintained including catch basins. We should have 3 or so trucks with 2 people on each truck who's only job is to clean catch basins.
Beyond that we have to find ways to live with water. More retention ponds, more permeable surfaces, etc.
I would make sure everything we have works and slowly modernize the system. Modernize the pumps, change over to 60 Mhz technology.
Provide better gauges in the canals and noted high risk areas, that provide real time mapping (Harris County does this).
Keep everything maintained including catch basins. We should have 3 or so trucks with 2 people on each truck who's only job is to clean catch basins.
Beyond that we have to find ways to live with water. More retention ponds, more permeable surfaces, etc.
Page 3 of 3
Popular
Back to top
Follow TigerDroppings for LSU Football News