This past fall, Goldman Sachs published an important report about "making cities resilient to climate change." In it, they remind us that the scientific consensus is that the world has already warmed from the pre-industrial era (and will likely continue to do so) and that a great many of us live near water (and will likely be impacted going forward).

About 40% of the world's population lives within 100 kilometers of a coast, and about 10% of the world's population lives in a coastal settlement that is less than 10m above sea level. Above is a list of some of those cities, along with their average elevation in meters. The cities with single digit elevations include Bangkok, Miami, Alexandria, and Amsterdam.
Goldman's prediction is that this need for "urban adaption" could lead to one of the largest infrastructure build-outs in history. And that cities all around the world should already be thinking about how they will finance and equitably execute on greater resilience (assuming they aren't already).

Click here to download a full copy of the report. The diagrams showing the average change in global mean surface temperatures against the pre-industrial period are something you should all look at it. The 2015-2019 change is pictured above.
Charts: Goldman Sachs
I spent a good chunk of this morning talking and thinking about underground building details that most people (unless you're in the industry) would never think to consider. This is not a criticism on most people. I mean, I don't know how iPhones are made. I just use and enjoy them. But when it comes to buildings, I'm paid to ask questions and understand how things work.
There's a lot of risk in the ground.
You have to think about things like bearing capacity, environmental contamination (usually), hydrostatic pressure and, generally, how you're going to manage water, particularly if you have a high groundwater table. Usually this last one is about making sure you're keeping the water out. A pretty important detail both below and above grade.
So when I came home tonight and saw the below tweet, I felt obligated to write about it.
https://twitter.com/kayeblegvad/status/1197266655891599362?s=20
If you read the reply from NYC's Metropolitan Transportation Authority, you'll see that this is them testing something they call a "flex gate." It is a flood barrier that allows them to seal off subway entrances in the case of a storm surge and they run these tests (shown above) for 4 hours at a time to make sure they're installed property. This one was.
Managing water is a big part of city building. New York City, Miami, Venice, and countless others know this all too well right now.
On Monday, Indonesia’s president, Joko Widodo, announced a plan to build a new capital city on the island of Borneo. The plan is in response to Jakarta's formidable environmental challenges. It suffers from some of the worst air quality in the world and is struggling with a severe subsidence problem, which, I understand, is partially (or largely) a result of climate change and the unregulated extraction of groundwater.
About 40% of the city now sits below sea level and the worst affected areas are supposedly sinking at up to 20cm per year. This gives Jakarta the dubious distinction of being the fastest sinking big city. On top of this, it is also one of the biggest cities in the world in terms of population. The Jakarta megalopolis has over 30 million people, placing it 2nd after Tokyo according to this list.
Here's a short video from the BBC that will give you some visuals to go along with the above. These are the sorts of urban challenges that will make you forget all about separated bike lanes and 45 degree angular planes. And they are not entirely unique to Jakarta. If you can't see the video below, click here.
https://www.youtube.com/watch?v=qOSwBIstZUs
This past fall, Goldman Sachs published an important report about "making cities resilient to climate change." In it, they remind us that the scientific consensus is that the world has already warmed from the pre-industrial era (and will likely continue to do so) and that a great many of us live near water (and will likely be impacted going forward).

About 40% of the world's population lives within 100 kilometers of a coast, and about 10% of the world's population lives in a coastal settlement that is less than 10m above sea level. Above is a list of some of those cities, along with their average elevation in meters. The cities with single digit elevations include Bangkok, Miami, Alexandria, and Amsterdam.
Goldman's prediction is that this need for "urban adaption" could lead to one of the largest infrastructure build-outs in history. And that cities all around the world should already be thinking about how they will finance and equitably execute on greater resilience (assuming they aren't already).

Click here to download a full copy of the report. The diagrams showing the average change in global mean surface temperatures against the pre-industrial period are something you should all look at it. The 2015-2019 change is pictured above.
Charts: Goldman Sachs
I spent a good chunk of this morning talking and thinking about underground building details that most people (unless you're in the industry) would never think to consider. This is not a criticism on most people. I mean, I don't know how iPhones are made. I just use and enjoy them. But when it comes to buildings, I'm paid to ask questions and understand how things work.
There's a lot of risk in the ground.
You have to think about things like bearing capacity, environmental contamination (usually), hydrostatic pressure and, generally, how you're going to manage water, particularly if you have a high groundwater table. Usually this last one is about making sure you're keeping the water out. A pretty important detail both below and above grade.
So when I came home tonight and saw the below tweet, I felt obligated to write about it.
https://twitter.com/kayeblegvad/status/1197266655891599362?s=20
If you read the reply from NYC's Metropolitan Transportation Authority, you'll see that this is them testing something they call a "flex gate." It is a flood barrier that allows them to seal off subway entrances in the case of a storm surge and they run these tests (shown above) for 4 hours at a time to make sure they're installed property. This one was.
Managing water is a big part of city building. New York City, Miami, Venice, and countless others know this all too well right now.
On Monday, Indonesia’s president, Joko Widodo, announced a plan to build a new capital city on the island of Borneo. The plan is in response to Jakarta's formidable environmental challenges. It suffers from some of the worst air quality in the world and is struggling with a severe subsidence problem, which, I understand, is partially (or largely) a result of climate change and the unregulated extraction of groundwater.
About 40% of the city now sits below sea level and the worst affected areas are supposedly sinking at up to 20cm per year. This gives Jakarta the dubious distinction of being the fastest sinking big city. On top of this, it is also one of the biggest cities in the world in terms of population. The Jakarta megalopolis has over 30 million people, placing it 2nd after Tokyo according to this list.
Here's a short video from the BBC that will give you some visuals to go along with the above. These are the sorts of urban challenges that will make you forget all about separated bike lanes and 45 degree angular planes. And they are not entirely unique to Jakarta. If you can't see the video below, click here.
https://www.youtube.com/watch?v=qOSwBIstZUs
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