the ONLY person on youtube to do and document the pressure of a 55 gallon drum. Your test method, calculations, and everything were wonderful. Only further thing scientific you could of done was repeat the test multiple times. Excellent work.
Amazing how much consumer camera technology has improved in 11 years! Anyway if it only takes 65 PSI or so to blow one of these, I got my work cut out now. LOL.
Saves so much time, thanks for doing this I’m planning on making a 25 ft 2 story with collapsible rooftop deck, houseboat completely airtight on 55g barrels that you can submerge when there’s storms. And I realized I’d probably go past 10m so I’d have to account for at least 14lbs of pressure while submerged below 30 ft probably would never go deeper than 40 ft granted this thing is gonna be 28’ from the ground give or take on depending on actual displacement. I actually might use 4 of those big 250g barriers as ballasts I was going to use the barrels but that seems simpler, building 2023 👍🏽
Interesting! Thank you. I was wondering what the upper pressure limit of a drum would be, and you have an answer. So... no plastic drums for a pressurized water system (even if the air volume was only a couple of gallons)
For future it would be wise to do tests like these as is done in the industry: fill the thing with water and then pressurise with air. That way you do not have a shrapnel bomb in your warehouse waiting to burst.
Hmmm. I'm building a 6x6' floating dock with four used plastic 55-gallon drums, and I had been waiting for winter to seal those drums, due to hearing about examples of folks who sealed them on hot days in the summer only to experience collapsing of the sides when the drums were immersed in cool water under the deck load. So I was planning to wait until an especially cold day to seal the drums, say, 32 degrees F. That way, I could leave my floating dock in the water during the wintertime. But now that I watch this video, I wonder whether sealing the drums at a low temperature could create problems associated with the rise in internal air pressure on hot days. Wouldn't want to experience anything like what I saw in that video! I decided to drag out the old Ideal Gas Law formula and do a worst-case analysis to approximate what the increase in pressure would be if I sealed a barrel on a 32 deg F day when the atmospheric pressure was equal to the world record (1.07148 atm), and taking the temperature up to 120 deg F. The final pressure was only 1.2632 atm, or 18.564 psi - ASSUMING I didn't make a mistake in the math (gonna check that calculation again). That's way less than the 65 or so psi point at which the drum exploded.
Hey, wait a second, I just realized (duh) that what caused the explosion was not merely the pressure inside the drum, but the difference between the internal and external pressures. For example, had the drum not been closed, then it wouldn't have mattered what the internal pressure was, because it would have been the same as the external pressure. So I suppose that my analysis should take into account the fact that 36 square feet of deck planks and some 2x6s and any sunbathers will be pushing down on the side of the barrel from overhead, while the water of the lake will effectively push inward on that portion of the drum which is below the waterline. But thinking about it yet again, I guess I don't need to factor in these considerations, because I'm doing worst-case scenario and these things actually work to my benefit: they oppose the outward-directed pressure on the walls of the container. Of course, the consideration that- AW HECK, STOP INTELLECTUALIZING AND JUST BUILD THE DARN THING.
@@TheMushroomHunter1 -- But if you are wanting to use them for flotation on a floating dock, you *really* want them sealed so that no water gets in them. Any water that gets in them means that you lose that much buoyancy. In other words, you are *sinking*. :) You don't need to a lot of pressure to the barrels, but a few psi would probably be a good idea. There are two plastic screw in caps on each of the barrels. You could drill an appropriate size hole and put a rubber tire valve in the larger one and use this to pressurize the barrel. Or you could use the smaller cap and some adapters to get to 1/4" NPT and have air lines that connect all the barrles together so that you have a central location to pressurize them and even monitor their pressure.
hi hello im watching ur vid today because at work today i was pressure testing a aircraft 1200 liter fuel tank when i got distracted when i returned the tank was at 90 psi of air (no fuel) how can i work out roughly how close i was to doing some damage im thinking from the vids i have seen it could have really bad im lucky it didnt blow
You can always get accurate data from these youtube videos where someone's question it put to the test rather than a site where the question is asked and 500 yahoos give their opinion. Thanks for answering my question. Is that outer space alien still hiding out in the building?
the ONLY person on youtube to do and document the pressure of a 55 gallon drum. Your test method, calculations, and everything were wonderful. Only further thing scientific you could of done was repeat the test multiple times. Excellent work.
Amazing how much consumer camera technology has improved in 11 years! Anyway if it only takes 65 PSI or so to blow one of these, I got my work cut out now. LOL.
Saves so much time, thanks for doing this I’m planning on making a 25 ft 2 story with collapsible rooftop deck, houseboat completely airtight on 55g barrels that you can submerge when there’s storms. And I realized I’d probably go past 10m so I’d have to account for at least 14lbs of pressure while submerged below 30 ft probably would never go deeper than 40 ft granted this thing is gonna be 28’ from the ground give or take on depending on actual displacement. I actually might use 4 of those big 250g barriers as ballasts I was going to use the barrels but that seems simpler, building 2023 👍🏽
Interesting! Thank you. I was wondering what the upper pressure limit of a drum would be, and you have an answer. So... no plastic drums for a pressurized water system (even if the air volume was only a couple of gallons)
For future it would be wise to do tests like these as is done in the industry: fill the thing with water and then pressurise with air. That way you do not have a shrapnel bomb in your warehouse waiting to burst.
I believe the blue ones are rated for 14psi.
Always wanted to see one of those bigguns pop inside of the cage...
this is the type of content the internet was made for
Good video how about testing for negative pressure?
You filmed this was a break back in the 1960s did you?
Can you do the same test for 55 gallon steel drum
so I'm guessing they're good for 10-30psi~
Why not try steel oil drum
Hmmm. I'm building a 6x6' floating dock with four used plastic 55-gallon drums, and I had been waiting for winter to seal those drums, due to hearing about examples of folks who sealed them on hot days in the summer only to experience collapsing of the sides when the drums were immersed in cool water under the deck load. So I was planning to wait until an especially cold day to seal the drums, say, 32 degrees F. That way, I could leave my floating dock in the water during the wintertime. But now that I watch this video, I wonder whether sealing the drums at a low temperature could create problems associated with the rise in internal air pressure on hot days. Wouldn't want to experience anything like what I saw in that video! I decided to drag out the old Ideal Gas Law formula and do a worst-case analysis to approximate what the increase in pressure would be if I sealed a barrel on a 32 deg F day when the atmospheric pressure was equal to the world record (1.07148 atm), and taking the temperature up to 120 deg F. The final pressure was only 1.2632 atm, or 18.564 psi - ASSUMING I didn't make a mistake in the math (gonna check that calculation again). That's way less than the 65 or so psi point at which the drum exploded.
Hey, wait a second, I just realized (duh) that what caused the explosion was not merely the pressure inside the drum, but the difference between the internal and external pressures. For example, had the drum not been closed, then it wouldn't have mattered what the internal pressure was, because it would have been the same as the external pressure. So I suppose that my analysis should take into account the fact that 36 square feet of deck planks and some 2x6s and any sunbathers will be pushing down on the side of the barrel from overhead, while the water of the lake will effectively push inward on that portion of the drum which is below the waterline. But thinking about it yet again, I guess I don't need to factor in these considerations, because I'm doing worst-case scenario and these things actually work to my benefit: they oppose the outward-directed pressure on the walls of the container. Of course, the consideration that- AW HECK, STOP INTELLECTUALIZING AND JUST BUILD THE DARN THING.
@@TheMushroomHunter1 -- But if you are wanting to use them for flotation on a floating dock, you *really* want them sealed so that no water gets in them. Any water that gets in them means that you lose that much buoyancy. In other words, you are *sinking*. :)
You don't need to a lot of pressure to the barrels, but a few psi would probably be a good idea. There are two plastic screw in caps on each of the barrels. You could drill an appropriate size hole and put a rubber tire valve in the larger one and use this to pressurize the barrel. Or you could use the smaller cap and some adapters to get to 1/4" NPT and have air lines that connect all the barrles together so that you have a central location to pressurize them and even monitor their pressure.
how much with a removable lid and seal
hi hello im watching ur vid today because at work today i was pressure testing a aircraft 1200 liter fuel tank when i got distracted when i returned the tank was at 90 psi of air (no fuel) how can i work out roughly how close i was to doing some damage im thinking from the vids i have seen it could have really bad im lucky it didnt blow
You can always get accurate data from these youtube videos where someone's question it put to the test rather than a site where the question is asked and 500 yahoos give their opinion. Thanks for answering my question. Is that outer space alien still hiding out in the building?
dont know what was wrong with your audio, but you should sell it to a place that does sound effects for horror or sci fi movies.
try it with a carbon fiber container
65 psi is actually 448 159.224 Pa