Was AntiVirus; Now something Completely Different!

[GreyGeek]

During my 18 years in the classroom, one of them as an acting principal until they could find a qualified one, I observed one pattern that distinguished good teacher from poor ones. The good ones had few rules and kept their classes fully engaged. The poor ones had lots of rules and wasted a LOT of classroom time "enforcing" them. They also usually has the least command of the subject matter they were trying to teach.

Forums can have lots of rules, and lots of admins who love to throw their weight around enforcing them. I won't stay on a forum like that. It's the free exchange, regardless of view point, that keeps me here, besides the number of people on this forum who have a phenomenal knowledge of Linux and kindly offer their help without belittlement or ridicule. If that means that a topic drifts, so be it. I've found as much good info from a TOT thread as one that focused like a laser. The search bar helps me find nuggets of gold amid the driftwood.

[verndog]

...

[Feathers McGraw]

Feathers, after getting my doctorate in Ops Research (1977) and starting as an assistant prof (in a business school), I actually did want to know about concrete! I went over to Civil Engineering (at the U.) and took two classes: surveying (use of a scope, maps, fill, etc.) and concrete (the science + lab work).

What's your favourite cement type? Lol

[oshunluvr]

...and now, for Something Completely Different..

[Qqmike]

Feathers, after getting my doctorate in Ops Research (1977) and starting as an assistant prof (in a business school), I actually did want to know about concrete! I went over to Civil Engineering (at the U.) and took two classes: surveying (use of a scope, maps, fill, etc.) and concrete (the science + lab work).

[Feathers McGraw]

Lol... sorry about that! To be fair, we don't normally go "TOT" until the original question has been answered!

Through lurking on this forum I've learned about as much from the off topic stuff as I have from the original subject... perhaps this one is a bit far though! I doubt many (any) of you need to know about concrete, although I hope you'll agree the thought of Steve using "spalling" to describe a friend's sunburn makes it worthwhile!

[GerardV]

It is a double-edged sword. It's what makes our Forum very different from almost every other Linux Forum (and that most of our members enjoy about it). On the other hand, sometimes threads evolve (or devolve, depending on your position), into something completely different.

The main reason i am still around.

[Snowhog]

It is a double-edged sword. It's what makes our Forum very different from almost every other Linux Forum (and that most of our members enjoy about it). On the other hand, sometimes threads evolve (or devolve, depending on your position), into something completely different.

[vinnywright]

When I started this thread I assumed that all posts would relate to Anti-Virus

I am amazed at the diversion.

LOL,,,,,,,,,,,,, new hear are ya .

I would say 70-80% of all threads around hear digress to TOT. {Totally Off Topic}

VINNY

[Qqmike]

Jeez, here I thought it was about
https://www.census.gov/svsd/www/vius/2002.html

[anonprivate]

When I started this thread I assumed that all posts would relate to Anti-Virus

I am amazed at the diversion.

[GerardV]

How on earth did we get from anti-virus to icy roads. I have seen some forks here, but this has to be the most unusual one!

[oshunluvr]

Doesn't it just make you want to be a Civil Engineer? Lol

Well, think of the amazing and interesting conventions you folks must have...

[Feathers McGraw]

Well, aren't you a fount of unusual knowledge

Doesn't it just make you want to be a Civil Engineer? Lol

[oshunluvr]

I would have to be mad to make such a claim! Although most of those salts have a much greater effect on the rebar than the concrete itself (so mass concrete would do OK)... and I doubt you'd get crystallisation at the bottom of the ocean, so there goes one part of the problem!

In general, concrete loves a bit of compression, but that pumping action you get when vehicles drive over it doesn't help because it pushes the salt further inside.

Incidentally, one of the worst places you can put reinforced concrete is in the splash zone by the sea... much worse than permanently underwater because you get an unlimited supply of salt drawn up through capillary action, which crystallises under the surface and causes spalling (outer layers flaking/popping off).

Sulphates are also present in sea water and they would still cause problems though. They react with the cementitious compounds and turn them into other compounds that won't hold the concrete together, and have a much higher volume, leading to internal tensile forces. I did my dissertation on the effect of sulphates on mass concrete, but I'll spare you the details!

Well, aren't you a fount of unusual knowledge