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How ancient Romans made stronger concrete than today

Payback says...

Imagine waiting 6 months for a single highrise floor pour to set.

That's why modern concrete isn't as strong. It has to set a Hell of a lot quicker to be cost effective.

Building Without Nails The Genius of Japanese Carpentry

charliem says...

More focus on the woodworking, less focus on the pretentious assholes who think they are putting a piece of feudal japanese culture into their mid-manhattan highrise.

Cyclic Elevator (lift)

wraith says...

Yep, this is called a "Pater noster" ("Our Father" , i.e. The Lord's Prayer) because of the construction of the elevator "cabins" reminiscent of the beads on a rosary. There are at least five of those still operational in my home city of Cologne, Germany. The one I used most is in Cologne's oldest (and one of Germany's oldest) highrise buildings, the "Hansahochhaus" and reaches up 17 floors (19, including the turn-arounds).

To answer lucky760's question: Yes, the cabins do go sideways at the top and bottom and you are not supposed to ride around in them when they do (Of course, I did).

Suspension Bridge Climbing!

EMPIRE says...

really hard to watch video. I can imagine myself in that situation... or better yet, I can most definitely not imagine myself in that situation. I don't really fear heights. In fact, I love great views from up high, and would kill to have a cool apartament in a highrise with big windows. But... I get nervous if I feel I'm not safe somehow lol. When I got married, I went with my wife to Paris on our honey moon, and we went to the Eiffel Tower. We could only climb to the 2nd platform (the highest one, was closed due to cloudy weather). She decided to take some photos and would hold her camera out of the railings to get a better shot, and for some reason, that just made me really nervous lol

"Building 7" Explained

Payback says...

>> ^marinara:

Exactly how does some office furniture burn for 7 hours, and then raise (fireproofed) steel to over 1000 degrees? What we know from other videos of WT7, is many of the fires extinguished themselves (burned themselves out).

I really doubt that a failure of a steel beam, which supports the floor (and nothing else), could take down an entire building.
Otherwise the facts in this video are generally correct, but misleading. (because office fires don't burn over 1000 degrees)


Actually, cinder blocks will ignite and burn if hot enough and they make up most people's chimneys in their house. Different materials burn at higher and higher temperatures. The heat from the fire pulls in more air, which causes higher temp things to burn, which pulls in more air, etc. etc.

ANY large fire can burn over 1000 degrees. It just needs oxygen in quantity. If some sweaty bastard with a set of bellows can melt iron and steel in a forge, then air sucked in by a huge, uncontrolled fire can do the same. The whole structure doesn't need to bend, just parts of the bottom.

You can't equate a single-room fire test of material combustion with a fully involved structure fire.

...and yes, you are quite right, most fires, if not brought under control, make highrises into death traps.

Extreme rooftop cycling

Two fire trucks collide in intersection (no sound, 00:12)

Krupo says...

>> ^Lethin:
Happened in toronto, or so my news reported, big highrise fire, both trucks where going to it, both failed to stop for the red. no injuries.


You got a link? Those traffic lights have black backgrounds, in Toronto they're yellow. I did find a link to an SUV smacked with a fire truck though.

Then there's this related news story; it doesn't reference this incident in particular: http://www.cbc.ca/canada/toronto/story/2008/06/27/burlington-fire.html

Trucks to go slower (follow speed limits, and the other rules) to avoid this sort of thing.

Guess it happens pretty often.

Two fire trucks collide in intersection (no sound, 00:12)

Dr. Octagon "Trees"

bamdrew says...

considering Kool Keith IS Dr. Octagon, this song is featuring producers One Watt Sun who produced most (if not all) of his new album. the video features some cool kid, and a cool scene where a giant lady plants a highrise building that grows like a mold into a city.

Barenaked Ladies - Lovers in a Dangerous Time

maudlin says...

Hey! This was largely filmed in my old neighbourhood in Scarborough (McCowan and Eglinton).

At 3:13, you can see the little variety store in the strip mall where I worked after school. The record store started off as an independent called Zounds in 1979, where I got my first John Hiatt LP and where Drastic Measures played a live set looking very, very pissy. And that final spastic jam at the end is in the vacant lot next to the slummy old highrise we lived in for several years (the big white thing that is in the background for most of the shots.)

Ahh. Scarberia. Now I want to go to a Bluffs party, climb down to the beach on someone's cheap rope, build a fire, and drink liberated beer. Except that it's too damn cold right now.

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