Saturday, December 3, 2016

Continuing a world without physics

Reference

This goes on an on about 30 trillion tons of human structures.  Wow, that must be a big number!  Why not compare it to the mass of water in air - 13 Giga-tons.  Compare it to a shaving of rock off all the land mass.  Compare it to what the glaciers moved.  Compare it to the weight of vegetation.

This is pure philosophy-science.  The article basically say we are destroying the earth.  Blah.  So that cockroaches can run over everything?

One nice thing about concrete cities, they have less radioactivity than freshly ploughed earth.  :)

I'm with trumpy-pants on all this.  :)

Linux - yeah, you can compile your kernel again!

In what has to be the stupidest Linux trick yet, they all went for kernel hardening, and forgot to fix the gcc compiler to work.  We had months without being able to compile a new kernel.  I like to do it just for fun, nobody really has to do it.  Nevertheless, I looked everywhere for a solution.  Now gcc6 is finally fixed.

Geotechnical Engineering - Quicksand

I've seen a lot of excavations in Toronto have that most dreaded of problems - quicksand.  This is when the hydraulic gradients are so large as to lift sand particles, making a thick soup.



This excavation has been stalled at this exact point for weeks.  And they have a pump going all weekend.  All they do is walk around with worried looks.  I haven't asked anyone because they'd be looking for an extra few million dollars for freezing.

The excavation is for jacking in a sewer liner.  It is deep and has to be very stable because men will constantly be working in it.  They could have paid an extra 10 bucks when they were doing the soil drilling, for a pumping test, but I guess they didn't.  An old-school geotechnical engineer would have seen it right way, but nobody employs them any more.

It's just the delay that is costly.  The contractor will sue for extras, so he's okay.  This is just consistent with all the other jobs on the river.  :)