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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.

Doh! Forgot the link, Thank You FacEngrPE! :)

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...

Could age have weakened the tower? It survived Katrina.

Does anyone have any info on the other 7 lines, where they are and what their voltage was? I'm seeing both 115 and 230kv lines into New Orleans.

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-...

I want to say ITT/Challenger. https://www.connecticut-electric.com/replacement-breakers-challenger-8482

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...

Ask Con Edison- they've got services above 200ka [afro2]

@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.}