233x233 feet wide at the base. Typically a building of this size is constructed as a core and tube or segmented tubes to maximize space and steel savings. I apologies about making such an odd inquiry.
If you were payed to do so, or at least asked about- how would 1,500 foot tall rigid steal frame supper tall design compare in regards to steel usage? Roughly speaking, what is the optimal column spacing from a strength, stiffness and sway perspective?
@NolaScience: Thank You for the information. I was not aware that Michoud was decommissioned.
GSU means generator step up transformer. So if there is 300MVA GSU, there is typically a 240kW generator behind it.
Alright, here are the technical details on how they are doing the restoration:
https://www.youtube.com/watch?v=FlV31YQFvAY
Look like they are doing a loop in and around New Orleans hitting substations and major generating stations along the way.
Looks like it worked. Outage map is now showing some green in East and Central New Orleans:
I'm guessing Derbigny and Curran Substations were energized with the 230 kv lines out of Michoud.
Looks like the plant that did is a new gas plant:
https://www.wwltv.com/article/news/investigations/david-hammer/entergy-new-power-plant-electricity-hospitals/289-97565961-85d6-4079-b07e-2a367e56726e
Looking at old public docs it appears like Michoud (shown just to the South) has 3 GSUs...
Alright, it looks like the were able to blackstart the East New Orleans generating station (Michoud)? and restore a few customers.
This is one the reasons I was asking about Islanded systems a while back. I think this is the only practical way during such widespread damage to and around a load...
Appears to have been one of eight:
https://www.enr.com/articles/52322-catastrophic-ida-decimates-southeast-louisiana-electric-grid
Some in depth discussion, not all eight lines are needed to bring the city back online...
@DPC: Agree, though I can understand where the under grounding folks are coming from. I mean if this becomes more common to the point people are paying for whole home standby generators, wouldn't that cost make more sense in hardening? I don't know, just a thought.
@Eeyore11: Thank you for...
@DPC: Are there more in total? Going by some older drawing I'm docs I'm getting 9, 11 in a newer one. (Ignore the green arrows, red dashes would be the lines going into New Orleans itself)
I'm with you on that.
News reports saying that a hospital in thibodaux lost the generator supplying its ICU where patients were manually ventilated by hand while being transported to another part of the Hospital...
A major transmission tower structure appears to have collapsed into the Mississippi river blacking out all of New Orleans/Orleans Parish:
https://imgur.com/mLEWQDZ
Reports indicate this to have been a vital power path-...
Fuses up to 6000 amps with a 300,000 amp interrupting are relatively available:
https://www.grainger.com/product/BUSSMANN-Fuse-49ZU92
My understanding is that at 200-300ka amps these low peak fuses will let less energy through than a current limiting CB.
The disadvantage with normally open...
@David, I get that. But IMO a CLF will clear faster than a current limiting breaker reducing the I2R heating of external components. Could be fuse manufacturer bias has gotten to me. [censored]
Thank You for the Excel file! No apologies needed. :)
Once editing is enabled, can it auto calculate parameters or is this fixed just for the one scenario listed?
{I just need the XL for a single circuit under the configuration shown rather than all the sets in parallel.}
