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China has been able to do this for at least 7 yrs now. 30 Story building in 15 days. https://www.youtube.com/watch?v=Hdpf-MQM9vY https://www.youtube.com/watch

China has been able to do this for at least 7 yrs now. 30 Story building in 15 days. https://www.youtube.com/watch?v=Hdpf-MQM9vY https://www.youtube.com/watch?v=Hdpf-MQM9vY

molszanski 8y ago
Yes, they build 30 story building faster then most single family homes take to do the foundation.
- maerF0x0 8y ago
  My suspicion is that its under the following constraints: 1) Site is cleared, maybe foundation complete (which means excavation done etc) 2) All prefab pieces are done 3) No restrictions of number of people on site (besides physical realities) #3 is no small case. I've often noticed that construction companies in the west have very few people on site. Certainly not 50 people per floor, for example. IMO this is due to wages and contracts. a) wages are too high to risk idle people and b) contracts are insufficiently written to incentivize speed of delivery (probably in favor of cost).
  - yrb 8y ago
    I would say the biggest factor is that it is a very repetitive rectangular box. Overall design and how it is detailed is the dominant factor in time it takes to build things. Do I have lots of joints that have to be perfect or can they be rough cut and covered with trim? Do things assembly easily without having to fiddle due to having the correct tolerances? Cuts and joins are what take the most time. The less cuts and joins you have the cheaper and faster things will be. Also cuts and joins that have to be done to high tolerances take a lot longer.
petra 8y ago
Does anybody know how's the quality of that building ?
- agumonkey 8y ago
  Good question, although the specs claimed look very appealing...
- knuththetruth 8y ago
  Here's a closer look at the building: https://www.treehugger.com/green-architecture/close-look-broad-sustainable-buildings-prefab-hotels.html https://www.treehugger.com/green-architecture/close-look-bro...
baursak 8y ago
USSR had prefab block high-rises for a very long time. Most current housing in Russia is pretty much that.
- gambiting 8y ago
  Yep, I lived in one in Poland for most of my life, they were absolutely fine. Most of them erected in the 60-70s too. All made in factory and assembled on-site: https://pl.wikipedia.org/wiki/Wielka_p%C5%82yta https://pl.wikipedia.org/wiki/Wielka_p%C5%82yta

China has been able to do this for at least 7 yrs now. 30 Story building in 15 days. https://www.youtube.com/watch?v=Hdpf-MQM9vY https://www.youtube.com/watch?v=Hdpf-MQM9vY

molszanski 8y ago

Yes, they build 30 story building faster then most single family homes take to do the foundation.

maerF0x0 8y ago
My suspicion is that its under the following constraints: 1) Site is cleared, maybe foundation complete (which means excavation done etc) 2) All prefab pieces are done 3) No restrictions of number of people on site (besides physical realities) #3 is no small case. I've often noticed that construction companies in the west have very few people on site. Certainly not 50 people per floor, for example. IMO this is due to wages and contracts. a) wages are too high to risk idle people and b) contracts are insufficiently written to incentivize speed of delivery (probably in favor of cost).
- yrb 8y ago
  I would say the biggest factor is that it is a very repetitive rectangular box. Overall design and how it is detailed is the dominant factor in time it takes to build things. Do I have lots of joints that have to be perfect or can they be rough cut and covered with trim? Do things assembly easily without having to fiddle due to having the correct tolerances? Cuts and joins are what take the most time. The less cuts and joins you have the cheaper and faster things will be. Also cuts and joins that have to be done to high tolerances take a lot longer.

petra 8y ago

Does anybody know how's the quality of that building ?

agumonkey 8y ago
Good question, although the specs claimed look very appealing...
knuththetruth 8y ago
Here's a closer look at the building: https://www.treehugger.com/green-architecture/close-look-broad-sustainable-buildings-prefab-hotels.html https://www.treehugger.com/green-architecture/close-look-bro...

baursak 8y ago

USSR had prefab block high-rises for a very long time. Most current housing in Russia is pretty much that.

gambiting 8y ago
Yep, I lived in one in Poland for most of my life, they were absolutely fine. Most of them erected in the 60-70s too. All made in factory and assembled on-site: https://pl.wikipedia.org/wiki/Wielka_p%C5%82yta https://pl.wikipedia.org/wiki/Wielka_p%C5%82yta