Tower Cranes Gone Wild

Kind of makes you wonder how many other brilliant and simple ideas are hiding in plain sight.

"the foundation required costly design reviews even though it takes up just 13 sq ft."

that doesn't sound right. perhaps 130.. but not 13.

Square Feet? Feet Squared? Maybe meters instead of feet? What difference does it make? I'm not going to be anywhere near that thing when it's lifting soemthing!

Doesn't really matter- 13 is the most beautiful number in the world. I would hope this unit is sitting on at least four 4-foot diameter pilings (roughly 13 ft^2 in area) driven down to bedrock- otherwise, it's just going to sink and sink and sink...

Maybe it's just me that's missing something. To me the whole article is based on.
"Big crane reaches further than small cranes"
Well I'll be jiggered... hold the presses.
Don't civil engs look at optimising crane usage on every site.
Shoule I post a thread saying I'm saving a fortune by cutting my lawn using a mower and not a pair of scissors?
Quick nurse tie me down again.
Del

Yeah. The other reason it probably never came up, is that tunnels aren't typically constructed from above, but dug out.

I have always wondered how they erect those cranes though.

Here's a cool video.

for some reason that video reminded me of ...