01-20-2015, 02:50 PM
Gotta love it. Thread has a snowball's chance in Halemaumau of staying on topic.
No, not sure how anyone will pay for it (but like "with debit cards"). Thinking more like how do you invest your funds if you want your grandkids and beyond to be able to live in the house you build, knowing there will be 1-2 flows in that time. Interested in how insurance might want to rate for lava danger and other govt/private financial systems to share risk and make lava survivability a value proposition.
Understand it's best not to build on a volcano, but someone will try first. I like helco's attempts to save their power poles but that was just the beginning of the learning curve. If we can get people in and out of orbit we can make non-firetraps in some lava hazard areas. Not try to withstand aa flows like royal gardens saw, just slow but eventually 20-30 foot pahoehoe flows like the current one, that means time to intervene and jack up the home/power pole/etc. as the lava comes. Anyone know what is the maximum depth of some the bigger lava areas in this flow? Or the Kalapana or Kapoho flows? Maybe you target survivability to about 20 feet but you give up if you are unfortunate enough to be right where Pele decides to put the lava tube. If all construction were 20 foot survivable you might get a 50% success rate or better for items actually contacting lava.
Maybe USGS would help by updating their blue line maps from time to time, and give people a little better idea than just LZ numbers what risks apply to what land? Or insurance companies do the same thing in their own self interest (given freedom to rate for risk)?
pbmaise can you share any of the engineering/construction specifics of the Bobs? And Rob how can your house survive fire? Maybe Bob2 has already been explained. Not sure if everyone could build their own hill. It would sure look interesting if more than a few people tried.
I was thinking hi temp metal sleeve inside concrete shell for the columns but haven't researched temp performance yet. Whatever is used might have to take up to 2000F for a few hours and over 1000F for days. Some ceramics might be helpful but might be OMG expensive. Good thought on the underside heat shield too. Could use active cooling if needed, but might be hard to get enough coolant, power to run fans/pumps etc. in place. Maybe you generate your own power from the heat. Maybe geothermal becomes a cottage industry.
JL
No, not sure how anyone will pay for it (but like "with debit cards"). Thinking more like how do you invest your funds if you want your grandkids and beyond to be able to live in the house you build, knowing there will be 1-2 flows in that time. Interested in how insurance might want to rate for lava danger and other govt/private financial systems to share risk and make lava survivability a value proposition.
Understand it's best not to build on a volcano, but someone will try first. I like helco's attempts to save their power poles but that was just the beginning of the learning curve. If we can get people in and out of orbit we can make non-firetraps in some lava hazard areas. Not try to withstand aa flows like royal gardens saw, just slow but eventually 20-30 foot pahoehoe flows like the current one, that means time to intervene and jack up the home/power pole/etc. as the lava comes. Anyone know what is the maximum depth of some the bigger lava areas in this flow? Or the Kalapana or Kapoho flows? Maybe you target survivability to about 20 feet but you give up if you are unfortunate enough to be right where Pele decides to put the lava tube. If all construction were 20 foot survivable you might get a 50% success rate or better for items actually contacting lava.
Maybe USGS would help by updating their blue line maps from time to time, and give people a little better idea than just LZ numbers what risks apply to what land? Or insurance companies do the same thing in their own self interest (given freedom to rate for risk)?
pbmaise can you share any of the engineering/construction specifics of the Bobs? And Rob how can your house survive fire? Maybe Bob2 has already been explained. Not sure if everyone could build their own hill. It would sure look interesting if more than a few people tried.
I was thinking hi temp metal sleeve inside concrete shell for the columns but haven't researched temp performance yet. Whatever is used might have to take up to 2000F for a few hours and over 1000F for days. Some ceramics might be helpful but might be OMG expensive. Good thought on the underside heat shield too. Could use active cooling if needed, but might be hard to get enough coolant, power to run fans/pumps etc. in place. Maybe you generate your own power from the heat. Maybe geothermal becomes a cottage industry.
JL
JL