Search results

I'm going with aliens on bikes and golf carts, they have a proven history of ignoring our laws and regulations, plus they can use their laser eyes to see the golf balls in the dark.

I don't follow your thoughts here, cavitation damage is a surface phenomenon, at the boundary between liquid and solid in this case. Damage is not caused by cavitation impacting only liquid. Can you cite the passages you refer to "involving (infra)sound waves."? Incipient cavitation produces...

I think you are correct in regard to this video showing only that the deck was breaking up, unrelated to the exact failure initiation process. I had forgotten the other reference you noted about air slots. Since the BOC seems to be consistently thinking of air slots they MUST think that...

If you reread what I said you will see 'only several months of testing will sustain cavitation damage resulting in failure of their heavy outlet components.' Perhaps it is not clear but I meant that cavitation damage to destruction often occurs rapidly, even in metal structures. The spillway...

My daily work for the past 11 years has included cavitation investigations involved in the design of industrial pumps. Standard industrial criteria used by the plumbing industry is to keep water flow speeds below 8 fps. Our pumps normally operate with fluid flow speeds of 25 fps and in only...

Yeah, I guess "Metabunk.org" is pretty hard to spell, eh? Much harder than DWR. :{)

This one stuck out for me too, but it is really wrorke's work on a cropped DWR photo that I started with. And it was AlmostaCE's comments that caused me to illustrate this version of the drains. There, now it is all atributed properly, maybe. Should have been credited to Metabunk.org in my...

Thanks, but all this relates to the weir, all three bullet points mention it. Have they said this plan will extend the entire width of the Emergency Spillway, all 900 or whatever feet of it?

So, what happens when the Emergency Spillway wall to the left (looking toward the lake from dam) of the weir is overtopped again and its base gets eroded? Anyone seen anything about what DWR has planned for that area? If the weir needs work, it would seem to me that the wall needs more.

Yes, all you Californians are welcome to my taxes. You are welcome because government agents would come to my house with guns if I did not pay up. :{)

I look at this as getting information from government officials whose job depends on revealing only the minimum amount of information requested, not volunteering anything not asked for.

I agree this is not a pipe. If there is a pipe there, it would be about 6 feet below the surface in undisturbed rock, not very likely in my opinion.

The BOC refers to this concrete over rock as cyclopean backfill on page three of their memo: "cyclopean backfill placed downstream of the approximately 1,000-ft-long monolithic ogee weir section." https://www.metabunk.org/oroville-dam-spillway-failure.t8381/page-38#post-203671 Which does not...

Page 2 of the memorandum: "The amount of drain water flowing from the pipe discharge openings along the spillway training walls seems extraordinarily large." This is the telling quote for me. That "extraordinarily large" flow seemed consistently evident in many of the spillway videos. There...

Yes to the adjustment, but the flow is in volume/time, not distance/time.

These Board Guys are GENIUS's! They concur completely with my determinations made weeks ago viewing videos and charts on this site from my armchair thousands of miles away. You don't often run across such smart people. :rolleyes:

If I am not mistaken, the "flood control outlet rating curve" includes the outflow from the power plant and the river valves not just the spillway. The curve goes well below the lake level that would stop all flow through the spillway. I believe that needs to be considered when looking at the...

Looks to me like "wonky" is the right word. I think one sensor that was going max to min between reports could do that to the added up total of several measuring inflow.

There appears to be a large rock rimmed splash pool just a couple of feet above the river level that causes the major wave there in that video. Thanks again.

Thanks, that first one is pretty close to what I was hoping for. I really wanted to see how much they left in the bottom of the 'new spillway' outlet. I think it would be an aerial view that would answer completely. The second photo shows quite a lot of turbulence (as if the flow was partly...