Post by Deleted on Feb 5, 2016 3:02:51 GMT
Because of points mentioned in several other posts, i thought i'd put a thought here under a new thread. If it's a thread. This pertains to legged platforms, their legs, the waves, stability, distributed floaties, starting small, building using repeatable sections.
A single 12" diameter leg 200ft long, with 150ft of it in the water, will displace ~7000 lbs. It's floatation value will depend on how it's made and the materials it's made with, but lets say it's heavy and will float only 3500 lbs for this discussion. So just one such leg will hold up a 2000 lbs residential deck and 1500 lbs of misc whatevers on it. There's at least three more legs under the 16x16 platform, giving an additional 10,000 lbs (at 3500 per leg). That's with no actual floatation devices (air bags, tanks, etc) attached to the legs!
Don't think the "extra" floatation is going to waste tho, there's still the heave plates at the bottom of the legs in calmer water 150ft down, and the option to attach more 16x16 decks with only two additional legs per. Four 16x16 decks make a 32x32 deck with nine legs floating up to 30,000 lbs, and a 64x64 deck would have 25 legs with a possible total combined buoyancy of 87,000 lbs. These are real ballpark numbers for a seastead fabrication plan that can be done in small stages with comparatively small tools, without a ship-building crew. And of course you could add an easy and cheap 4000 lbs floatation to each of the 25 legs and thereby double the floatation to total over 80 tons. Suddenly, it's not small potatoes any more, it's an adjustable ballast 4,000 sq ft floating platform with a 80 ton weight capacity.
So just saying, there's overlooked features a seastead could take advantage of in the deep-water scenarios. In this thread, i have shown it needs the deep legs, but then it needs no dedicated floatation tanks or hulls! By careful choice of materials and assembly, tradeoffs and options can be adapted to what is needed. I didn't explore a lot of the engineering, i simply slashed the leg displacement in half to get the floatation value, i didn't figure lots of bracing between each 16x16 deck area, etc etc etc. I didn't figure going from 12" legs in the wave zone to 24" legs below 100ft, and i didn't figure geopoly vs steel or aluminum. So there are very wide variances possible in all aspects of the engineering, but the principle of starting small and adding to, and floating platforms, can work.
A single 12" diameter leg 200ft long, with 150ft of it in the water, will displace ~7000 lbs. It's floatation value will depend on how it's made and the materials it's made with, but lets say it's heavy and will float only 3500 lbs for this discussion. So just one such leg will hold up a 2000 lbs residential deck and 1500 lbs of misc whatevers on it. There's at least three more legs under the 16x16 platform, giving an additional 10,000 lbs (at 3500 per leg). That's with no actual floatation devices (air bags, tanks, etc) attached to the legs!
Don't think the "extra" floatation is going to waste tho, there's still the heave plates at the bottom of the legs in calmer water 150ft down, and the option to attach more 16x16 decks with only two additional legs per. Four 16x16 decks make a 32x32 deck with nine legs floating up to 30,000 lbs, and a 64x64 deck would have 25 legs with a possible total combined buoyancy of 87,000 lbs. These are real ballpark numbers for a seastead fabrication plan that can be done in small stages with comparatively small tools, without a ship-building crew. And of course you could add an easy and cheap 4000 lbs floatation to each of the 25 legs and thereby double the floatation to total over 80 tons. Suddenly, it's not small potatoes any more, it's an adjustable ballast 4,000 sq ft floating platform with a 80 ton weight capacity.
So just saying, there's overlooked features a seastead could take advantage of in the deep-water scenarios. In this thread, i have shown it needs the deep legs, but then it needs no dedicated floatation tanks or hulls! By careful choice of materials and assembly, tradeoffs and options can be adapted to what is needed. I didn't explore a lot of the engineering, i simply slashed the leg displacement in half to get the floatation value, i didn't figure lots of bracing between each 16x16 deck area, etc etc etc. I didn't figure going from 12" legs in the wave zone to 24" legs below 100ft, and i didn't figure geopoly vs steel or aluminum. So there are very wide variances possible in all aspects of the engineering, but the principle of starting small and adding to, and floating platforms, can work.