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Bomb truck barrier developed by Texas A&M's Transportation Institute.
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Previously:
https://www.homemadetools.net/forum/...635#post128522
https://www.homemadetools.net/forum/...930#post124831
https://www.homemadetools.net/forum/...582#post128261
https://www.homemadetools.net/forum/...119#post115591
I don't know so much about Texas A&m as being the developers 8" sch 80 and thicker pipe barriers have been around for years in many countries. Oilfield rig manufactures have had them around some of their rig building yards since back in the 70s
sad that we would need them.
Recently i visited Brisbane (where they wouldn't evacuate staff in city hall back in the 60's & 70's when bomb alerts were advised) and found better bollards ( than the steel ones we planted in parks ((in 90's)) allowing staff to enter but prevent hoons entry) around mall entrances. My 90 y.o.friend says she is glad her time is nearly up.
When I was in the Middle East we made a lot of these barriers
completely self contained the hydraulic pump could either be located inside or mounted in a control booth there was a nitrogen pressurized accumulator mounted inside .
the system was closed loop not only were there springs inside the cylinders but in-order to retract the barrier the cylinders had to be pumped down then the system was held closed via solenoid valves any disruption in the electrical the barrier deployed and could not be lowered without a 30 ton load or pumped down. If say a car or medium sized truck had its front tires on the barrier plate when it deployed the vehicle would almost be tossed, as the pressure from the accumulator would be expelled into the cylinders at a rate to 200 gallons per minute it took only 2.5 gallons to fully deploy the cylinders or about 1/2 second to go from flat to 3 feet high
Attachment 28722
These drawings do not show the system
the top plate is 3/4" thick
Attachment 28723
Attachment 28724
Thanks Frank. We all know such items are needed in hostile places but some of us (like me ) take it for granted that home is safe. Before 911 it was just the IRA and an occasional person with an axe to grind who was a threat but so much goes on behind the scenes that most of us are privilaged not to know about while all the time demanding transparency. Some have heavy consciences while others sleep sound as a button.
Ranald; actually it is wishful thinking that before 911 things were more or less honky-dory except for limited factions. especially in terms of Islamist extremism as far back as the 1600's politicized Islam started becoming prevalent in the Muslim countries. Although one could argue it dates nearly a 1000 years earlier to 620 when a jihad against Christians was done in Spain, but that was not a political movement it was in actuality a religious attempt at ethnic cleansing.
the Waring factions bestrewn moderate or mainstream Muslims and the Islamic extremist who have been indoctrinated by radical Mullahs, much like what we call the left are trying to indoctrinate children in schools and universities in most western societies, have been going on for a very long time. Certain events have brought this to our attention though the correlations may not always be interpreted or realized such as 1951 when a Palestinian nationalist assassinated Abdullah at the al-Aqsa Mosque in Jerusalem. Fifteen-year-old Prince Hussein saw his grandfather die, and the next day carried a gun for the first time. A year later he was king. 6 days of 1967 Iran in 1979, Iraq & Kuwait 1990
There are far too many events throughout history that have led up to the need for barriers to block vehicles.
And to be fair these are not limited to any single facet or sec of people their ethnicity culture political or religious beliefs or lack there of
yes that is fact but not all perceive/d the threats as being home based or home threatening and that is why I mentioned Brisbane mall as it was a matter of "it couldn't happen" to us where in realty it can, just like in NZ. The 3 stooges made us laugh (or cringe) with their antics about nazis & schimitar weilding muslims & such forth but for many history & modern day tech & extremeism were miles or millenia apart.....until it happens closer to home. History is something we can learn from and hopefully avoid. It is a shame we don't have a real "melting pot" for peoples.
Unfortunately, the lesson being learned from history is that we do not learn very well from history.
Seemingly it matters not what slice of humanity we describe, if there are minor activists; successively higher levels more resolute exist. They motivate others do their bidding. Targeting the upper echelon rarely ceases negative activity.
Just the IRA... Well they did enough killing, not just in Eire or N.I. or even just the UK. Where I sit in Southern England they blew up a number of shops and public places. One female terrorist having brought down a Police officer with a leg shot went back, stood over him and blew his brains out, at the time Americans were the main funding source of and specialist sniper suppliers to the IRA. The IRA could also found to be training in the Middle East with American government funded Islamic terrorists training to fight Americas proxy wars, especially against the Russians in 'stan. The current mess in Syria has a lot of similarities.Quote:
Originally Posted by ranald
As yea sow, so shall yea reap...
And for all the good the Good Friday agreement may have done with PIRA, CIRA and RIRA continue the 'struggles' (is it terrorism, or just a cover for criminal activities?) to this day.
Pretty darn sad what some do in the name of peace or terror. A friend always says "they should all be put against a wall....." but that would bring more out.
24-second video:
https://www.youtube.com/watch?v=EaUnDmT-mL8
Save a wall, patching and occasional cleaning. Initiating a vest, not much time to freak out, plenty to bail though.Quote:
Originally Posted by ranald
Make them test barriers, locked inside to drive trucks as in post #12 GIF.
Aren't getting 72 virgins either way . . .and no consumer agency to file false advertising claims to boot.
Wow! Reminds me when my late partner was industrial health nurse for Mack Trucks at head office/plant in Brisbane in 80's.
A guy was finishing a truck's air con ready for collection that day (Christmas eve) & when he turned the key (cab tilted) to test the air; the truch started and took off through the meals room where some were eating during their break. A very quick thinking guy pushed the lunch ones out of the way & no one was hurt physically, as the truck demolished the room. The vehicle was not delivered that day.
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As effective as this device seems. I can see huge environmental concerns with deploying it to stop a raging vehicle.Quote:
Originally Posted by Jon
Ruptured feel tanks for one. Also what if the vehicle had been intended to be used as a delivery source for a chemical or biological agent those spiked assemblies which would work so well at stopping the vehicle would be the perfect trigger to release the on board agents hidden in faux fuel tanks Even though it is general practice to deploy barrier devices well before access to a compound area is achieved all the suicide driver would have to do would be to time his incursion when the winds were high and in the right direction. Particularly in the desert if the wind is out of the wrong direction today there is always tomorrow. The released chemical or biological agent could be carried many miles in the desert winds.
Far better to have a barrier that stops a vehicle dead from head on without adding the risk of underbody puncture
No load on any of the trucks. How about a U-Haul packed with Ammonium nitrate & diesel? I think it may shove right through it, or at least get much further.
This device is interesting. The dual cab just wanted to Ram it.
We had a runaway/stolen truck this week and driver continued on his way after tyres were spiked: created havoc but that barrier would have paid dividends.
I was wondering about short wheel based vehicles at speed, as that may end up by jumping over it totally.
Regarding terrorists, they will unfortunately probably hijack a cessna instead of an isuzu once such barriers are in place.
Idiots are becoming more brazen! We also had a car thief almost get home (at Collingwood Park I think) and friends/neighbours prevented, temporarily at least, police catching the thief. Also, many young teens ambush police cars after they persue a couple or so of suspect youths, and THEY SAID "it could only happen in the States!"
Internet is faster than fashion: for better or worse.
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I hope the driver wasn't hurt...:lol:
There was no driver in the truckQuote:
Originally Posted by IntheGroove
Had an old lady hit the gas instead of the brake and ran into one of our buildings. Almost made it through the wall.
I don't think so. Its looks like he was safely ejected on impact.Quote:
Originally Posted by IntheGroove
What? Why? This one of the strangest stupidish things I have seen.
Barriers have to be real world tested before they will be approved for use.Quote:
Originally Posted by Ralphxyz
going almost frame by frame there is no evidence there ever was a driver in the truck. At least not from as far back as you can see. A driver probably had tied the steering wheel got the truck rolling to a reasonable speed to jump out pulled the throttle on his way out the door inertia and diesel fuel would have taken care of the rest.
For a more real world test the truck should have been fully loaded. It is one thing to stop an empty truck weighing around 10 tons quite another to stop one weighing 30 tons, but had the barrier failed to stop a fully loaded truck then there is no telling what might have happened
truck looked empty to me..
I hope the passenger wasn't hurt when the driver jumped out...
If you stop the video at the end the barrier wall looks to have sustained significant damage possibly enough that a fully loaded truck might have made it through but it wouldn't be going anywhere afterwards
no driver - remote control
Thanks, makes it more interesting.
**** thats why the load of dirt was late...
Everyone of these tests the trucks are empty. Why? Load up a Tracker Trailer full of Steel I Beams or a loaded Cement Truck and try them again. You would think they would want to test these barriers with the heaviest, worse case, otherwise how do you know if they work? Maybe they don't?
Cheers
Willy
yes there was no driver in the truck.there was also a chase truck behind it, possiably driving and filming.
Yep if I were going to attempt to gain entrance to where I wasn't allowed I'd send the heaviest most powerful thing I had through the barrier if it made it through even though being destroyed it would have compromised the structure which other lessor vehicles could pass through.Quote:
Originally Posted by willyb
But then again I might just send a truck loaded with fertilizer and diesel wait for the huge explosion to draw the attention of all the guards away from their regular entrance then calmly walk over to the guard shack open the gate and allow my squad to pass through unchallenged Sometimes it is not the intent to breach a barrier but to create a significant enough diversion.
HMM...WE DONT WANT TO PISS OFF FRANK....no way no how.only frank gets in to see the wizzard!!!
