Gas Explosion At Strip Mall Caught On Camera

Submitted by: ichamps 7 years ago Misc

They"re calling this a natural gas leak, but it looks like a tidy bundle of dynamite aslpoded judging from the blast.
There are 66 comments:
Male 1,590
"lmao, and you are a qualified expert on explosion analysis right?"

No. But he did stay at a Holiday Inn Express last night. ;-)

0
Reply
Male 382
thats called a high street.
0
Reply
Male 988
Conejito1011, its called that because its built as a strip of stores (so i assume). Strip malls arent inside actual mall buildings, they are seperate series of stores chained together.
0
Reply
Female 120
Why is it called a "Strip Mall"? Is it the same as a regular mall?
0
Reply
Male 1,455
mac n cheese, I`m afraid you`re mistaken. Very rarely will you see complete combustion, and even then, under very controlled circumstances. You`re going to end up with airborne carbon and hydrogen (Consider the large volume of smoke billowing out of the wreckage), and the reaction uses far less oxygen than complete combustion. There`s only one detonation, the initial one- even if some of the gas doesn`t combust, it`s dispersed too much to combust even if more oxygen is added.

Furthermore, there`s not going to be two explosions, even with complete combustion. The energy is dissipated extremely rapidly, and the chain reaction cannot continue. The closest you can get to this sort of multiple-explosion event is continual combustion, i.e. burning it continuously as fuel.

Oh, and you forgot the obvious- all the water released by the combustion is in gaseous form, and therefore the volume stays far too close to the starting amount to cause an implosion.

0
Reply
Male 311
"but it looks like a tidy bundle of dynamite aslpoded judging from the blast."

lmao, and you are a qualified expert on explosion analysis right?

0
Reply
Male 148
heyy im still in high school...
0
Reply
Male 949
And here I was expecting a massive fireball. :\
0
Reply
Male 2,388
mac n cheese you forgot
CH4(g) + 2O2(g) > CO2(g) + 2H2O(l) + fun.
im gonna be a chem student soon hopefully :D
0
Reply
Male 326
Thanks grade 11 chemistry student
0
Reply
Male 148
CH4(g) + 2O2(g) > CO2(g) + 2H2O(l))*

to finish off the gas would now expand and the explosion happens

0
Reply
Male 148
ok so it was an implosion followed by an explosion...
this is because the gas needs sufficient oxygen to burn
in reality there would be more ch4 than O2 so only part ofthe methane would burn (this is almost like two explosions happening)
1st explosion
(CH4(g) + 2O2(g) → CO2(g) + 2H2O(l)).
1 L + 2 L > 1 L (negligible)
in science a liquid always takes up less area than a gas of same mass so since the water (2H2O) is a liquid it is negligible.
then what we effectively have is 3 litres of gas ( 1L of methane + 2L of O2) burning to become one litre of gas ( 1L CO2) and thus a lower pressure inside than outside so the air gets sucked in. and since that air contains oxyjen...
2nd explosion
any methane that didnt have enough oxyjen to react first time reacts then and the explosion gets bigger ( all the methane that didnt react first time would react now) the energy given off would be much more than the energy of the first explosion a
0
Reply
Male 34
Hey, did you notice the guy passing in front of the store?
0
Reply
Male 959
good god. everytime they rebuilt the shop it exploded again. You`d think someone would have turned off the gas
0
Reply
Male 148
my visa card will do that some day !!!
0
Reply
Male 198
they said assploded. sounds like a post-curry party.
0
Reply
Male 606
They`re calling this a natural gas leak, but it looks like a tidy bundle of dynamite aslpoded judging from the blast.

looks like a tidy bundle of dynamite aslpoded judging from the blast.

a tidy bundle of dynamite aslpoded

dynamite aslpoded

aslpoded


RAAAAGE

0
Reply
Female 1,001
ugh, overkill on the replay
0
Reply
Female 1,062
Watching Mythbusters does not make you a bomb expert.
0
Reply
Male 721
"They`re calling this a natural gas leak, but it looks like a tidy bundle of dynamite aslpoded judging from the blast."

your a bomb expert are you? gas can do that you know.

0
Reply
Male 845
didn`t need the replay
0
Reply
Female 267
btw, I now have this really weird cyber crush on SuperSmash. I`ll get over it fast...it`s just Springtime and well... brains breed twitterpation. lol :P

I`ll get back asap after I make a couple calls on Tuesday. Cheers all. :)

0
Reply
Female 267
Hellfire, enough speculation.

I`ll make the call to Prince George`s County in Maryland tomorrow.

I think it`s definitely a reflection of a man in the glass of the storefronts. Additionally, I don`t dispute desslox`s knowledge of gas ignitions. However, I DO think more on the side that this was a planned and intentional exercise by local authorities. Whether or not the explosion/implosion happened as per plan remains to be known. But assuming this was just a "taxi" cam that just happened to be recording a vacant shopping plaza in the middle of the afternoon is far more a reach than the reasonable alternatives.

Or maybe I should begin believing that 9/11 never happened and yes, in fact there is beachfront property in Arizona. :/

0
Reply
Male 216
wow that looks bad, i hope there was somebody inside.
0
Reply
Male 94
you are both correct... it is a implosion ( the air being sucked into the explosion) which then explodes outward. trying to think of a good example..ill sleep on it and come back tomm. for anyone wondering but you are both correct just need to let the brain rest for a example lol
0
Reply
Male 1,505
Wow, they blew up the same building four times! You don`t usually see that kind of value in a modern construction job!
0
Reply
Male 3,756
I actually typed "natural gas, implosion" and Google asked Did You Mean: "natural gas, explosion".

So, Google is on the explosion side of the debate.

0
Reply
Male 3,756
I`m taking sides here, but I don`t see why natural gas would cause an implosion. It`s gas.

0
Reply
Male 15,832
justjason44, I must respectfully disagree. If the pressure inside the building were sufficiently low as to cause the entire storefront to move as far as it did, all the windows would have been blown inward as well. Also, a pressure differential could not possibly exert a lateral force on the wall and cause the column to tilt to the left. Also, if natural gas implodes, you couldn`t run an internal combustion piston engine on it. The thermal energy which causes the expansion is released the same instant the fuel combines chemically with oxygen. You are correct, though, in stating that gas doesn`t explode. Actually, it burns -- really fast.
0
Reply
Male 189
Sturdy building to survive four blasts. Funny how the guys in the cab and on the radio say the exact same things just before each blast. I bet they`re psychic.
0
Reply
Male 97
Actually OldOllie... it contracted because a natural gas explosion.. isn`t an explosion.. it`s an implosion... so it would suck in.. then expand.
0
Reply
Male 3,756
So, the rebar just flexed? I can see that.
0
Reply
Male 15,832
SS, the columns didn`t crumble because under the brick, they`re probably steel-reinforced concrete. The brick is probably just 1/2"-thick tiles glued to the concrete.
0
Reply
Male 15,832
This was definitely gas and not dynamite. I would guess that the FD got a call about a gas leak, and this vid is from the dash cam from one of their vehicles. The building appears to contract because the center of the explosion was pretty far back in the building, and it first blew the roof upwards. That pulled the edges of the roof in toward the blast. (Lay a towel on the floor, pinch the center, and lift up.) You can see the rightmost column lean in toward the center of the blast. The camera shakes because the shockwave travels along the ground faster than the pressure wave travels through the air. Then the pressure wave hits the front of the store blowing out the windows, and the roof is breached and what`s left of it falls back down allowing the walls to straighten. I doubt that this was planned, but at least they were prepared for it. Anything could have set it off from a thermostat to a phone ringing.

For some reason, the last few characters of a long post get chopped off, so

0
Reply
Male 3,756
I don`t get the contraction thing. Shouldn`t the pillars have crumbled as a result of that much movement?
0
Reply
Male 94
it is common to evac. the area that is why police and fire are there at a distance. also it does look to my eye like the guy goes between the pillar and the pop machines/ vending of some kind machines? by shadows, it doesn`t look like a reflection to me but i am not there just watching.

as for a "all clear for detonation" .... never heard of that in my line of work. any detonation other than a burn off isn`t called for. we have ways and means to suck the gas out and distribute it harmlessly into the air so the mixture is inert and no longer explosive.

as for the explosion in corner.... well that is where the gas accumulated and was in a explosive mixture. you have to have a certain mixture with air to get a bang/flash, to much air or gas and it wont be explosive to little the same effect

hope that "fuels" the speculation.... no pun intended

o:-)


0
Reply
Female 1,260
Ok, I agree that the person walking is a reflection in the glass window, but the timing is still awfully close with that big of an explosion. Even if he was crossing the street to get away from the store before it blew it seems strange to me that someone would call an "all clear" for the detonation with him still in the area - would his reflection show if he was far enough away? I`m asking. Also, if this was for fire/police training - what does it show them? There was no fire, no one to rescue - or maybe they had `crash test dummies` inside? Why only detonate in that one far corner? I`m just full of ... questions. I`m just nosy. I have to know everything!
0
Reply
Female 267
You never see the guy walk up to the door and ring the bell though desslox. In fact, you never see the guy other than in the reflection on the windows.
0
Reply
Male 94
wow finally something that i do ( Im a natural gas pipefitter ) mad it to the board... anyhoot wonder what was going threw dudes head who walked up to the door in the left middle of the screens mind..... i would sugest just by looking at it one of two things set that blast off

1. prob. a door ringer as the door opened. al you need is a spark and that is why you will never have a gas man ring your door bell.

2. friction from the look being turned made either a spark or a small static arc. thats all that is needed for that

imho
peace

0
Reply
Male 11
I live two block from where this happened in Maryland... I thought the world was coming to an end, and about crapped my pants.
0
Reply
Female 267
"Habbazoot:
bored2run, the water mark is from the camera, fliming another camera`s view. a drive cam, is it is labled in the upper right. people in the car could have been making the noise, and the 2nd camera makes it stupid soundign"

Hey Habbazoot, yeah I saw that. DriveCam is utilized by my many fleets both public servant divisions and private companies. Also Prince George County is a Maryland county, from where this clip was recorded. There`s a redundant watermark since whomever originally uploaded the clip, did so by DriveCam.

It`s initial origin however I suspect, is not from just the layman taking random recordings at a shopping mall. Notice the empty and papered over windows? None of the businesses appear to be open.

Here are the links to both DriverCam and the state of Marylands counties.

http://www.drivecam.com/

http://www.msa.md.gov/msa/mdmanual/36loc/pg/html/pg.html

Cheers Ha

0
Reply
Male 2,506
This makes sense, record a building randomly :)
0
Reply
Male 1,788
I was looking forward to a larger explosion.
0
Reply
Male 2,125
BOOM! ^^
0
Reply
Female 267
Looking at it again, notice the watermark at the top? Film clip is "Courtesy of Prince Georges Fire/Rescue Dept."

This was a clip shot for training purposes. Many times fire and police use vacant or soon to be demolished property for training.

0
Reply
Female 267
I think the guy walking was just a reflection in the storefront windows. The clip isn`t from a CCTV security cam in the parking lot. And the audio in the background of the guy taping the explosion sounds as if from a walkie-talkie.

Why be there with a video camera and have other people around just a shoot a shopping plaza? Film crew?

0
Reply
Male 428
"Yeah, the building explodes just as that guy goes into it. something seems odd about that.
Assassination?"

NO ONE WENT INTO THE BUILDING...its just a reflection. fail

0
Reply
Male 516
Oh crap, someone was walking in front... that sucks. It`s almost as bad as being attacked by a tiger while being strangled by a snake in the path of an oncoming train... almost.
0
Reply
Male 820
Yeah, the building explodes just as that guy goes into it. something seems odd about that.
Assassination?
0
Reply
Female 1,436
Meh, stupid stores anyway
0
Reply
Female 15,763
...yeah I still don`t understand why it goes all funkyh and contracts.

Oh well, it`s pretty!

*replays it*

0
Reply
Male 5,190
If you look to the far left you can see someone go inside before it explodes o.o
0
Reply
Male 3,310
The worst part was it blew up like 4 times in a row.
0
Reply
Male 864
Watch the windows just before the weird camera shift... They do warp a bit.
0
Reply
Male 445
NOT THE FASHION BUG!!! WTF OMG! NO WAY!
0
Reply
Male 588
Building doesn`t contract, just shaky camera and laggy video.
0
Reply
Male 1
That`s not why it contracted.

Go back to the video and look at the sky during the explosion, it changes as well.

My guess is that this was caused by the camera.

0
Reply
Male 122
The explosion was in Maryland the other day. As to the video, it looks like someone was videotaping their tv while it was showing the security camera footage from the news.
0
Reply
Male 864
Looks like he`s filming it off his TV... Notice the logo top-right moves exactly with the video...

Opie:the building contracted because of a change in pressure (underground maybe?), when the explosion happened. Causing the ground the building is on to shift, making the building buckle slightly. The exploding you see is slightly delayed from when it actually sploded.

0
Reply
Female 2,220
@Opie - there`s a camera filming the recording if you get me and the guy says "alright" because he knows it`s going to happen.

Well that`s what I think`s going on.

0
Reply
Female 133
the building may have contracted because when an explosion occurs, all the oxygen in the area would be pulledi n towards the blast, which would cause a change in the air pressure in side htebuilding. this would cau it to contract as the air pressure would pull the building in. this only lasts a split second, as the blast then forces the building outwards again :)
0
Reply
Female 15,763
Yeah it`s weird that there`s a camera there because it`s moving, unlike a stationary security camera would.

However the explosion doesn`t look like a planned one at all. But he says "all right" before it happens. :\ So I don`t know what to think.

P.S. Someone who`s good at physics, why does the building contract before exploding?

0
Reply
Male 3,756
Ever heard of security cameras?
0
Reply
Female 112
Why was someone standing there waiting for it to happen?

Gotta be demolition of some sort...

0
Reply
Male 5,314
im always curious about the asplosions with a camera pointed directly at them at the exact moment it goes off.
0
Reply
Male 176
Link: Gas Explosion At Strip Mall Caught On Camera [Rate Link] - They`re calling this a natural gas leak, but it looks like a tidy bundle of dynamite aslpoded judging from the blast.
0
Reply