4 ms·
Physical things this need maintenance, repair, and eventually replacement. Needs change over time. If the buildings around you have a lifespan of 50-100 years
by seoaeu 4y ago
Physical things this need maintenance, repair, and eventually replacement. Needs change over time.
If the buildings around you have a lifespan of 50-100 years and you aren’t replacing 1% or 2% of them every year, then you are falling behind. If population is growing due to births, increases in life expectancy, or an influx of immigrants/refugees then housing construction must account for that as well.
- CodeSgt 4y agoThis assumes the construction of these 50-100 year buildings were evenly distributed over a given time. If 90% of a towns or cities 100 year infrastructure if built in a decade, then it'll just lead to a lot of replacements starting in about 90 years, not continuous small replacements.
- deleted 4y ago[deleted]
- seoaeu 4y agoMore likely once the 90 years expires the area discovers that it is not actually capable of doing the replacements required. Of course, pretty much only suburban areas have infrastructure/buildings built over that short an interval. Constructing 90% of a major city’s high rises in a decade would be a construction boom unlike anything the western world has seen in a lifetime.
- frosted-flakes 4y agoIt's definitely happened in China though. Some of those mega-cities started out as sleepy fishing villages only 20 years earlier.
- mlyle 4y ago> If 90% of a towns or cities 100 year infrastructure if built in a decade, then it'll just lead to a lot of replacements starting in about 90 years, not continuous small replacements. Lifespan of a building isn't some kind of magical threshold thing where it is perfect for 100 years and then must be replaced in year 101. A noticeable share of those buildings built for 50 years will need to be replaced around years 25-30. Almost all of those buildings will need work before 20 years is up. Some of them will outlast their design life by a large factor. Not to mention that not every builder is selecting the same construction techniques and design life.
- DrewADesign 4y agoIn the vast majority of the urban northeast— easily one of the most vibrant parts of the country— there's nowhere close to 1 or 2 percent turnover in residential building stock every year. Probably not every ten years.
- prionassembly 4y agoMan, I miss SimCity.
- djhn 4y agoWhy such a short estimate? Is this an America thing? I'm currently renovating a 150 year old house that was previously majorly renovated 50 years ago and we're aiming for a useful lifespan just for the parquet/plumbing/electrics of at least 50 years, 100 years for the joists, insulation and plaster. The building will hopefully stand for hundreds of years.
- 3-cheese-sundae 4y agoYes. Some time around 1970 or so, US homes began to be built increasingly cheaper and more quickly. This approach has benefits and drawbacks, as you'd imagine.