Semi tanker drives through flooded road - GIF

Semi tanker drives through flooded road.

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Previously:

https://www.homemadetools.net/forum/...767#post152204
https://www.homemadetools.net/forum/...325#post188716
https://www.homemadetools.net/forum/...483#post169972
https://www.homemadetools.net/forum/...161#post134562
https://www.homemadetools.net/forum/...627#post143406

Looks like that moron got what he deserved and he WILL be looking for another job after that disaster. If your going to attempt that stuff, at least stay in the middle of the concrete pad/road, not drive as close to the edge as you can. Driven thru deeper and faster stuff than that many times with the semi and got thru it OK, even taken express coaches thru bigger deeper stuff. Ok, had to make the pax take their luggage up top and open all the bin doors, to reduce drag/push on the coach, but I'm still here typing this lot out without ever having any disasters like in the above movie clip.

Quote:

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Originally Posted by greenie

Looks like that moron got what he deserved and he WILL be looking for another job after that disaster. If your going to attempt that stuff, at least stay in the middle of the concrete pad/road, not drive as close to the edge as you can. Driven thru deeper and faster stuff than that many times with the semi and got thru it OK, even taken express coaches thru bigger deeper stuff. Ok, had to make the pax take their luggage up top and open all the bin doors, to reduce drag/push on the coach, but I'm still here typing this lot out without ever having any disasters like in the above movie clip.

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We call drivers who drive so close to the edge or the road, " shoulders, or white liners" They are usually the ones who will have the most flat tires over a period of time.
the condition is actually a learned or conditioned trait, they align up the right corner of the hood from their driving position in a direct line from eyes to white line to give them a perspective of the location of the right side of their vehicle.
Flat seaters who drive with the air let out of their seats to be as low as possible use the front of the hood as a guide for following distances as well by picking a spot on the trailer in front of them.
None of these even realize this is what they are subconsciously doing but they will become hypnotized to the spots or the lines as time goes on.

Whatever happened to sweeping your mirrors?? Every 15 seconds, left mirror, gauges, right mirror, straight out the windshield. Force yourself to do this for 15- 20 miles, and you will never be able break the habit for the rest of your life. It makes you stay in the center of the lane, you don't pick up sharp crap off the shoulder, you don't jeapardize anyone's safety on the left, you always know the situation surrounding you, and you always know what is going on internally in the
engine and tranny.
All you really have to do at that point is to adjust the air in the seat for a comfortable ride, make sure there's coffee in the thermos, and enough cigarettes WITHIN REACH to get through a 10 or 12 hr shift.

I got off the road in 1990, and things have changed a lot since then, but seriously guys,

WHAT HAPPENED TO ALL THE TRUCK DRIVERS???:soapbox:

Rant over,
Brett out.

Hopefully the driver was smart enough to not try walking through the water and to just climb up on his rig and wait for somebody to come get him. People commonly underestimate the power of flowing water and you could see the water pushing his rig sideway as soon as he entered the moving water. He didn't even make it to the faster stuff.
Hopefully none of the other drivers decide they can do it. When his tractor and trailer did not have enough weight on them to resist the water pushing them it is very unlikely passenger cars would fare any better.

He should have favored the center left

He should have stayed out of the water. Take another look right at the start of the clip. Pause it and magnify if you must, but look at how high the water is on his tires. There is about a foot of water pushing on them, and judging from the speed the water is moving (and the "bow wave" as it hits the tires) it is pushing hard. A person would be unable to walk through it. Their feet would be swept from underneath them and they would be getting washed downstream. If they snagged on anything they would likely be drowned because the water would be pushing them down as they tried to get up.
Do not underestimate the power of fast moving water.

Oh I completely agree

So what if the water is only half way up his wheels, big deal. Even empty that rig has got to weigh 16 to 20 tons, if loaded, it's up to 40 tons. So the water is flowing, the weight of that vehicle WILL NOT get pushed around by that current. It's the fault of the idiot behind the wheel, he steered it that far over to the right, it fell of the concrete slab. Empty trucks which are that weight, can go thru water that is twice as deep as that, like open the door and let the water in. IT IS THE IDIOT DRIVING THAT CAUSED THAT TO HAPPEN. The IDIOT entered the water, as close as he could get it to the right hand steering wheel and just kept going with that steering lock on it. He's a complete moron and this TOTAL IDIOT SHOULD NOT BE DRIVING SOMETHING LIKE THAT, possibly allow him the drive a 'billy cart', but for christ sake, take his licence away from him, before he kills somebody.

Have a look at this lot, it's a lot bloody deeper and really flowing fast, oh, the truck is empty heading back from Darwin. Just goes to show you what an idiot that other driver was, that drove of the concrete slab.

And this fella, he didn't get washed of the bridge either, OK, he got his feet a bit wet, but that will dry out.


https://www.youtube.com/watch?v=Wdq4...annel=varagner

Greenie. I grew up around fast water. I know what it looks like. I know what it does.

Take a real good look at your Aussie video. The water is not flowing anywhere near as fast. Look at how little it is piling up against the obstructions in the current. If it was flowing as fast it would be piling up against the barriers much more, like it is doing in the first video, and your buddy's little pickup truck would have been gone downstream. The main wave in your Assie video is straight forward from the pickup pushing the water ahead of itself. If the side current was as strong the water would have piled up against the door and been coming in the window

The driver in the first video was an idiot for driving into that stream, and an even bigger idiot for driving too fast for his tires to keep contact with the surface instead of hydro-planing, and an incredibly huge idiot for not stopping as soon as he felt his truck drifting.
Typical hero mentality. Hopefully the driver in the first video (like I already said) was smart enough to just sit on his truck instead of thinking he could hop down and walk back to dry land because he would not have made it. However you never know with these "supermen" who think the laws of nature do not apply to them.

I have driven (large) trucks through water where my knees got wet on mine roads during spring floods. I have a natural aversion to doing so. Not only is the water cold but you have no way of knowing what is under your wheels, you might be driving into potholes, a rock garden or a clay grease pit.The water also tends to screw up any electronics under you, as well as contaminating most of your lubrication. Pumping large quantities of grease through every zerk fitting on your undercarriage until the grease comes out as grease instead of white cream, draining and changing all diff, tranny, and hydraulic oils does not make for a fun Sunday.

He lost it at the start as soon as he hit the water. You can see that he drifted off to the right from the start.

Quote:

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Originally Posted by Altair

Semi tanker drives through flooded road.

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Previously:

https://www.homemadetools.net/forum/...767#post152204
https://www.homemadetools.net/forum/...325#post188716
https://www.homemadetools.net/forum/...483#post169972
https://www.homemadetools.net/forum/...161#post134562
https://www.homemadetools.net/forum/...627#post143406

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Fact: Water is 832 times denser than air, so a 10 mph flowing river/stream that has a submerged object is pushing with a force equal to a wind blowing at 8,320 mph. When you see an equation like that it should not be surprising when big objects get moved so easily with swift-flowing water. It is deceiving and no wonder so many ignorant people get caught and drown.

Yup, and you mention submerged objects, so lets consider buoyancy. If the object is in the water it is trying to float, even if it is denser than the water. even if it is only partly submerged.. Its weight is reduced by the volume of the water it displaces, which means it has even less downforce to produce friction and resist being pushed. If the object can float there is no resistance at all unless it is tied to an anchor.
If you try wading through moving water and it is only ankle deep the water is trying to float your feet and you will have about 7 or 8 % less downforce because of it. If you are in the water waist deep you have lost almost half of your downforce as well as greatly increasing the area the water is pushing against. Waders have been drowned in fairly shallow water because when they got knocked over a foot got trapped between rocks or similar, holding them in the current as it washed over them and making it impossible for them to get up.

Yup, and you mention submerged objects, so lets consider buoyancy. If the object is in the water it is trying to float, even if it is denser than the water. even if it is only partly submerged.. Its weight is reduced by the volume of the water it displaces, which means it has even less downforce to produce friction and resist being pushed. If the object can float there is no resistance at all unless it is tied to an anchor.
If you try wading through moving water and it is only ankle deep the water is trying to float your feet and you will have about 7 or 8 % less downforce because of it. If you are in the water waist deep you have lost almost half of your downforce as well as greatly increasing the area the water is pushing against. Waders have been drowned in fairly shallow water because when they got knocked over a foot got trapped between rocks or similar, holding them in the current as it washed over them and making it impossible for them to get up.

There are a few spots with nice little white water chutes on our river. Canoes that get trapped sideways against boulders never come out the same as when they went in.

Quote:

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Originally Posted by markonevet

Fact: Water is 832 times denser than air, so a 10 mph flowing river/stream that has a submerged object is pushing with a force equal to a wind blowing at 8,320 mph. When you see an equation like that it should not be surprising when big objects get moved so easily with swift-flowing water. It is deceiving and no wonder so many ignorant people get caught and drown.

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Your "equation" is simplistic but I think there is a problem. If you're going to equate the kinetic energies of air and water, I think the equation should look like

ma * va² = mw * vw²

where:

ma = mass of air
va = speed of air
mw = mass of water
vw = speed of water = 10 mph


For equivalent volumes of air and water we can substitute the appropriate densities for the masses, which leads to:

mw = 832 * ma

and the equation becomes:

va = vw * sqrt (832) = 10 * 28.8 = 288 mph

The original equation is too simplistic and ignores some important effects but, taking it as presented, the 8320 mph wind seems unrealistic.

The 832 is a bit off too.

Water density is 1000 kg/m³
Air density is 1.225 kg/m³

1000 / 1.225 = 816.33

288 mph is still a lot of wind.

All I can say is: DAM!

Quote:

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Originally Posted by cmarlow

288 mph is still a lot of wind.

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Yes, it is but at least it's feasible, if unrecorded, on this planet. For 8000+ mph wind you would have to go to Jupiter or some such. Note that there are recorded instances of semis having been tipped over by wind in the southwest deserts.

https://www.youtube.com/watch?v=sgm4Yzltsrs

The whole idea of equating the kinetic energy is suspect because the wind and water impinge on different areas of the truck. I haven't given it a great deal of thought but it would probably be more realistic to compare the drag forces exerted on the truck by wind and water. Using the drag equation would force you to deal with the drag coefficients for those two fluids and the vastly different areas associated with the forces they generate.

The Fujita scale of tornado intensity:
https://www.weather.gov/ffc/fujita

I did not mean unfeasible. I just meant it is still a lot of wind. 280 mph wind speed is fast enough to rank as level 5 (incredible) on the Fujita scale.

Lucky we seldom see much deep water moving at 10 mph over roads, through towns or into nuclear reactors. When we do we call it tsunami like the ones that hit asia a few years ago.

OK, lets not think Tsunami. Lets just think of a regular flash flood in a canyon happily picking up car size boulders and rolling them along.

Flash floods are a force to be avoided
Feb 20, 2020 · These ‘afiqim’ (flash floods) cascade down (either to the Dead Sea or to the Mediterranean) as a wall of water moving at great speed (40 miles/60 km. per hour) and sometimes attaining a height of 30 feet/9 meters (see http://www.timesofisrael.com/desert-...s-lash-israel/ for a recent example).

Just looks like inexperience to me. End of story & his job unless he owns the rig and if insurance pays.