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Is the world really running out of sand?

practical.engineering

191–200 of 218 posts

Re: Is the world really running out of sand?

#191
post #167
post #166

Earlier quoted context omitted.

From what I remember from this particular code-base, there are also: - Programmer to farmer - Programmer to musician - Programmer to writer and of course - Programmer to landlord.

Don’t forget programmer to pilot. Every time an aeronautical post appears they come out of the woodwork and chat about equipment.

Can we just agree there's X to Y for every X and Y?

Re: Is the world really running out of sand?

#192

One thing that surprised me when I started running a tugboat business: A country can be both an exporter and importer of sand. Sand of one type goes from the U.S. to The Bahamas to be used in concrete. Sand of another type goes from The Bahamas to the U.S. to be used in aquariums. Specialty sands go to make regulation volleyball courts.

Yeah but there is going to be a massive imbalance in the quantity of those two types of sand. I bet the sand required for aquariums is a rounding error on the amount of sand required for concrete.

Especially as many aquarium owners, these days, use a topsoil-clay mixture instead. Planted tanks take far less maintenance, need less filtering, can fit more (and happier) fish, and the plants grow better in soil.

Re: Is the world really running out of sand?

#193
post #180

Earlier quoted context omitted.

Since neither the general economy nor agriculture has gotten anywhere near getting off fossil fuels yet, that is assuming a lot isn’t it? Even if electrical grid needs are 100% renewable, that is just a couple percent of most economies energy usage.

For some places that is happening: https://www.smithsonianmag.com/sponsored/more-than-98-percen... 2020 had the UK reaching 43%: https://www.nationalgrid.com/stories/energy-explained/how-mu... Interesting point about electric being only a small part of overall usage --- I guess direct heating and things such as smelting/refining metals makes up the bulk of energy usage?

Transportation. But be careful to distinguish "work" from "primary energy". The latter is raw energy content of fuels, maybe 80% of which is wasted when powering (say) a car. Moving to BEVs would reduce total energy use because as much as 5 units of primary energy gets replaced by 1 unit of electrical energy.

A similar effect (if not as dramatic) occurs when replacing a fuel-burning furnace with a heat pump. In the US, 2/3rds of industrial heat demand is below 300 C and could be addressed with industrial heat pumps of various kinds (especially if the process has a waste heat stream to recycle by feeding it into the heat pump.)

Re: Is the world really running out of sand?

#194

One thing that surprised me when I started running a tugboat business: A country can be both an exporter and importer of sand. Sand of one type goes from the U.S. to The Bahamas to be used in concrete. Sand of another type goes from The Bahamas to the U.S. to be used in aquariums. Specialty sands go to make regulation volleyball courts.

While not sand, I remember reading about the state of Colorado importing specialty dirt from around the world while constructing I-70 through the Rockies. Various properties were required that couldn’t be found from local dirt.

Re: Is the world really running out of sand?

#196
post #164

Earlier quoted context omitted.

Just marveling as an old school computer programming geek that I happen to be in a forum that also includes someone in the tugboat business.

We have the programmer to woodworker pipeline, programmer to runner pipeline... is there a programmer to tugboat operator pipeline I'm missing out on?

Tugboat pilot has always been my GOTO answer for "dream job".

Re: Is the world really running out of sand?

#197
post #164

Earlier quoted context omitted.

Just marveling as an old school computer programming geek that I happen to be in a forum that also includes someone in the tugboat business.

We have the programmer to woodworker pipeline, programmer to runner pipeline... is there a programmer to tugboat operator pipeline I'm missing out on?

Programming and in general tech work has been extremely highly compensated compared to most other industries the past few decades.

This means a lot of intelligent (and not so) folks who could do whatever they wanted chose tech to chase the money. Get a little lucky in life and maybe stock options and they get to do what they actually enjoy the latter half of their life.

Most of society can only dream of such capability. The ones who actually have the bravery to pull it off vs. grinding out their final days in a career they are not passionate about are incredibly inspirational to me at least!

Re: Is the world really running out of sand?

#199
post #22

Earlier quoted context omitted.

I would argue that there's no reason to continue misspelling "lead" as "lede" outside of a context where you are worried about conflating the "lead" paragraph with the "lead" piece of metal which was used as a spacer between words in a Linotype machine

It's not a misspelling, it's jargon. FWIW I prefer it and I think it's valuable to preserve in part because people who dig into it a bit learn about the history of the term and practice of putting publications (especially newspapers) together.

Right. Saying people outside the industry should feel free to use ‘lead’ instead of ‘lede’ is like saying people outside the tech business should feel free to talk about ‘kilobites’.

Re: Is the world really running out of sand?

#200
post #167

Earlier quoted context omitted.

Don’t forget programmer to pilot. Every time an aeronautical post appears they come out of the woodwork and chat about equipment.

Can we just agree there's X to Y for every X and Y?

There is, but the size of the "to" and the dissimilarity of Y to X is what makes the pathway interesting.
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