Contest question - The Firearms Forum

Shellback · 10-02-2008, 12:46 PM

After this question is answerd correctly there will be a drawing for a beautiful Sapphire, this is a georgous stone someone is going to be very lucky winning this.

If you have a 4" pipe standing up 35' tall full of water what will be the pressure at the bottom of the pipe??

Good Luck
Tim

USMC-03 · 10-02-2008, 01:07 PM

It'd been a long time since my my thermodynamics class, but…

According to the Water Data table, page 23 in the Cameron Hydraulic Data book (Ingersoll-Rand, 1942) the static pressure of water with 35 feet of head is 15.16 lb/sqin.

Pressure (of water in lb/sqin) = .4331 x Height (in feet)

jjmitchell60 · 10-02-2008, 01:18 PM

While I could answer this question with a bit of help from my books, yes I took Thermo as well adn have a degree in Physics for one of my 3 degrees; I will opt out of this one being I would theOpal. I will say this for Shellback, the opal he sent me is one NICE stone and my wife is itching for a setting spo she can war it. being this month is her birthday, I probably will have it set in a ring here soon for her so who ever wins this is winning a nice stone no doubt IMHO.

Do not forget the affects of gravity as well as the volume of the pipe on your calculations, I will give that hint.

USMC-03 · 10-02-2008, 01:38 PM

Quote:

Originally Posted by jjmitchell60

…yes I took Thermo as well adn have a degree in Physics for one of my 3 degrees...

Good deal jj. I have a degree in engineering (not that I use that part of my education much) as well as business. I'm hoping to start graduate school next year; going for the full frontal lobotomy…

Quote:

Originally Posted by jjmitchell60

Do not forget the affects of gravity as well as the volume of the pipe on your calculations, I will give that hint.

As I recall, considering the area and/or volume of the pipe would be required for force and not pressure. Am I correct? It's all fuzzy anymore.

Shellback · 10-02-2008, 03:15 PM

Ok here is a hint, it is much easier then you guys are making it

Tim

Texman · 10-02-2008, 03:46 PM

The height of the pipe is inmaterial,, the depth of the water is all that matters.

Shellback · 10-02-2008, 03:50 PM

Quote:

Originally Posted by Texman

The height of the pipe is inmaterial,, the depth of the water is all that matters.

Actually the height of the pipe is what matters since it makes the depth of the water..
Tim

Shellback · 10-02-2008, 03:53 PM

Quote:

Originally Posted by jjmitchell60

While I could answer this question with a bit of help from my books, yes I took Thermo as well adn have a degree in Physics for one of my 3 degrees; I will opt out of this one being I would theOpal. I will say this for Shellback, the opal he sent me is one NICE stone and my wife is itching for a setting spo she can war it. being this month is her birthday, I probably will have it set in a ring here soon for her so who ever wins this is winning a nice stone no doubt IMHO.

Do not forget the affects of gravity as well as the volume of the pipe on your calculations, I will give that hint.

I will say as well listen to JJ he is on the right track

Tim

Texman · 10-02-2008, 04:19 PM

Quote:

Originally Posted by Shellback

Actually the height of the pipe is what matters since it makes the depth of the water..
Tim

umm,, not trying to start an argument, but the major pipe is 35 ft and the 4 in one sits in the bottom? is that correct so far? ok, the weight of the 35 ft of water completely determines the weight ( pressure) at the bottom, doesn't matter if it is inside or outside the 4 " pipe.

TranterUK · 10-02-2008, 04:24 PM

This thread reminded me of a flight from Rio in Brasil to the UK twenty odd years ago. The guy sitting next to me showed me his jewel encrusted Rolex and said his name was biblical and started with a J, if I could guess it in three tries the watch was mine.

I never got the watch.

Interestingly he came from a town in Brasil called America, or similar. It was established after the US Civil war by soldiers of the confederacy who did not want to stay in the US, and so re settled there.

Shellback · 10-02-2008, 04:26 PM

You have a 4" diameter pipe 35' tall full of water, what is the Pounds per square inch (PSI) at the bottom of that pipe?
Tim

Shellback · 10-02-2008, 04:33 PM

Quote:

Originally Posted by TranterUK

This thread reminded me of a flight from Rio in Brasil to the UK twenty odd years ago. The guy sitting next to me showed me his jewel encrusted Rolex and said his name was biblical and started with a J, if I could guess it in three tries the watch was mine.

I never got the watch.

Interestingly he came from a town in Brasil called America, or similar. It was established after the US Civil war by soldiers of the confederacy who did not want to stay in the US, and so re settled there.

This is not a trick or loaded question at all and you will get the "watch" so to speak, everyone who has won my contest's gets a impressive prize, I just do it for the fun of it. It just has to be our members of TFF.
Tim

SolidVFR · 10-02-2008, 04:47 PM

What is the temperature? Are we at sea level?

SolidVFR · 10-02-2008, 04:51 PM

~16psi?

Just kinda guessing over here.

Crpdeth · 10-02-2008, 05:00 PM

Quote:

Originally Posted by Shellback

You have a 4" diameter pipe 35' tall full of water, what is the Pounds per square inch (PSI) at the bottom of that pipe?
Tim

Inside diameter?

Crpdeth

millwright · 10-02-2008, 05:04 PM

Sea Water or Fresh - or something else ?

I see someone else has already referenced the "Bible Of Hydraulics" I-R's Cameron Hydraulic Data Manual.....which will give the correct answer in psia, psig, ft. and inches.
Worked for that division for years..... >MW

USMC-03 · 10-02-2008, 05:04 PM

Ok, Shellback, are you talking pressure or force?

358 winchester · 10-02-2008, 06:38 PM

about 290 psi

Texman · 10-02-2008, 06:42 PM

Ok, I had to ask someone and picked a Semi-Retired International Oil Drilling & Logistics Consultant, and his answer is 15.1606 psi

Shellback · 10-02-2008, 07:00 PM

Quote:

Originally Posted by USMC-03

Ok, Shellback, are you talking pressure or force?

Pressure per square inch (PSI) no one has the answer yet, someone has to know this, where is our Teacher Mr. Pistolenschutze

Tim

lead · 10-02-2008, 07:11 PM

Is it lead pipe, or PVC? Is the water pure, or full of chemicals?
Oh well, my guess is 46.

flannelman · 10-02-2008, 09:34 PM

The pressure is equal to the specific weight of water multiplied by the height.

P=(62.4lb/ft^3)*(35ft)*(12in/1ft)=182lb/in^2

Marlin T · 10-02-2008, 09:55 PM

I don’t have a clue, but VFR asked what I was going to. Temp and barometric pressure are two variables that would affect the outcome.

Shellback · 10-02-2008, 10:12 PM

Quote:

Originally Posted by Marlin T

I don’t have a clue, but VFR asked what I was going to. Temp and barometric pressure are two variables that would affect the outcome.

True but not to the extent you might think. Try a search of water column may be very helpful.

This is useful info.
Tim

SolidVFR · 10-02-2008, 10:30 PM

OK, well you've stumped me(that wasn't too hard

). I'm still guessing just over 16psi.

10-02-2008, 12:46 PM	#1
Shellback Senior Member Join Date: Jul 2008 Location: Broken Arrow Ok Posts: 950	Contest question After this question is answerd correctly there will be a drawing for a beautiful Sapphire, this is a georgous stone someone is going to be very lucky winning this. If you have a 4" pipe standing up 35' tall full of water what will be the pressure at the bottom of the pipe?? Good Luck Tim __________________ The Plumber Protects The Health of the Nation New World Order never, Sovreignty Forever -->

10-02-2008, 01:07 PM	#2
USMC-03 Advanced Senior Member Join Date: Oct 2007 Location: Peoples Republic of the Pacific Northwest Posts: 1,825	Re: Contest question It'd been a long time since my my thermodynamics class, but… According to the Water Data table, page 23 in the Cameron Hydraulic Data book (Ingersoll-Rand, 1942) the static pressure of water with 35 feet of head is 15.16 lb/sqin. Pressure (of water in lb/sqin) = .4331 x Height (in feet) __________________ Let not the rifles of good and free men be reforged into plowshares, but may they rest in a place of honor; ready, well oiled and God willing unused. For if the price of peace becomes licking the boots of tyrants, then "To Arms!" I say, and may the fortunes of war smile upon patriots. - Fortes Fortuna Javat -

10-02-2008, 01:18 PM	#3
jjmitchell60 Advanced Senior Member Join Date: May 2004 Location: Raised in Buzzard Roost near Frog Town in hillls of Kentucky Contributor Posts: 1,471	Re: Contest question While I could answer this question with a bit of help from my books, yes I took Thermo as well adn have a degree in Physics for one of my 3 degrees; I will opt out of this one being I would theOpal. I will say this for Shellback, the opal he sent me is one NICE stone and my wife is itching for a setting spo she can war it. being this month is her birthday, I probably will have it set in a ring here soon for her so who ever wins this is winning a nice stone no doubt IMHO. Do not forget the affects of gravity as well as the volume of the pipe on your calculations, I will give that hint. __________________ Oath Keepers NOT ON OUR WATCH www.oathkeepers.org 2nd Amendment to the US Constitution: A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed. "Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote." -- Benjamin Franklin When injustice becomes law, resistance becomes Duty... Thomas Jefferson

10-02-2008, 03:15 PM	#5
Shellback Senior Member Join Date: Jul 2008 Location: Broken Arrow Ok Posts: 950	Re: Contest question Ok here is a hint, it is much easier then you guys are making it Tim __________________ The Plumber Protects The Health of the Nation New World Order never, Sovreignty Forever

10-02-2008, 03:46 PM	#6
Texman V.I.P. Member Join Date: Nov 2006 Posts: 362	Re: Contest question The height of the pipe is inmaterial,, the depth of the water is all that matters.

10-02-2008, 04:24 PM	#10
TranterUK Advanced Senior Member Join Date: May 2008 Location: Cambridge UK Posts: 5,103	Re: Contest question This thread reminded me of a flight from Rio in Brasil to the UK twenty odd years ago. The guy sitting next to me showed me his jewel encrusted Rolex and said his name was biblical and started with a J, if I could guess it in three tries the watch was mine. I never got the watch. Interestingly he came from a town in Brasil called America, or similar. It was established after the US Civil war by soldiers of the confederacy who did not want to stay in the US, and so re settled there. __________________ DVC - Diligentia, Vis, Celeritas - Accuracy, Power, Speed. The light at the end of the recession tunnel IS a train coming the other way!

10-02-2008, 04:26 PM	#11
Shellback Senior Member Join Date: Jul 2008 Location: Broken Arrow Ok Posts: 950	Re: Contest question You have a 4" diameter pipe 35' tall full of water, what is the Pounds per square inch (PSI) at the bottom of that pipe? Tim __________________ The Plumber Protects The Health of the Nation New World Order never, Sovreignty Forever

10-02-2008, 04:47 PM	#13
SolidVFR V.I.P. Member Join Date: Jun 2008 Posts: 346	Re: Contest question What is the temperature? Are we at sea level? __________________ -USA- ~ Μολὼν λάβε ~ The Right of the People to Keep and Bear Arms SHALL NOT BE INFRINGED. Last edited by SolidVFR; 10-02-2008 at 04:50 PM..

10-02-2008, 04:51 PM	#14
SolidVFR V.I.P. Member Join Date: Jun 2008 Posts: 346	Re: Contest question ~16psi? Just kinda guessing over here. __________________ -USA- ~ Μολὼν λάβε ~ The Right of the People to Keep and Bear Arms SHALL NOT BE INFRINGED.

10-02-2008, 05:04 PM	#16
millwright Advanced Senior Member Join Date: Jun 2005 Posts: 1,440	Re: Contest question Sea Water or Fresh - or something else ? I see someone else has already referenced the "Bible Of Hydraulics" I-R's Cameron Hydraulic Data Manual.....which will give the correct answer in psia, psig, ft. and inches. Worked for that division for years..... >MW

10-02-2008, 05:04 PM	#17
USMC-03 Advanced Senior Member Join Date: Oct 2007 Location: Peoples Republic of the Pacific Northwest Posts: 1,825	Re: Contest question Ok, Shellback, are you talking pressure or force? __________________ Let not the rifles of good and free men be reforged into plowshares, but may they rest in a place of honor; ready, well oiled and God willing unused. For if the price of peace becomes licking the boots of tyrants, then "To Arms!" I say, and may the fortunes of war smile upon patriots. - Fortes Fortuna Javat -

10-02-2008, 06:38 PM	#18
358 winchester TFF Admin Staff Join Date: Apr 2004 Location: Pensacola Fl. area Posts: 7,335	Re: Contest question about 290 psi __________________ Administrator & Owner RangeDay.com Proud, White, Heterosexual, Gun Owning, Southern American, Christian. Any question about where I stand?

10-02-2008, 06:42 PM	#19
Texman V.I.P. Member Join Date: Nov 2006 Posts: 362	Re: Contest question Ok, I had to ask someone and picked a Semi-Retired International Oil Drilling & Logistics Consultant, and his answer is 15.1606 psi

10-02-2008, 07:11 PM	#21
lead Advanced Senior Member Join Date: May 2004 Location: Missouri Posts: 1,522	Re: Contest question Is it lead pipe, or PVC? Is the water pure, or full of chemicals? Oh well, my guess is 46. __________________ The best things in life, are not things.

10-02-2008, 09:34 PM	#22
flannelman Advanced Senior Member Join Date: Aug 2006 Location: Rural Arkansas. But isn't all of Arkansas rural? Posts: 1,176	Re: Contest question The pressure is equal to the specific weight of water multiplied by the height. P=(62.4lb/ft^3)(35ft)(12in/1ft)=182lb/in^2 __________________ What we do in life echoes in eternity! **** Liberals, they make about as much sense as a screen door on a submarine. If you want to be a looser the best way to get there is to hang around with other loosers.

10-02-2008, 09:55 PM	#23
Marlin T Advanced Senior Member Join Date: Jul 2005 Location: New Mexico Posts: 7,857	Re: Contest question I don’t have a clue, but VFR asked what I was going to. Temp and barometric pressure are two variables that would affect the outcome. __________________ "But the simple truth--born of experience--is that tyranny thrives best where government need not fear the wrath of an armed people." Judge Alex Kozinski - United States Court of Appeals for the Ninth Circuit It is the duty of the patriot to protect his country from its government. - Thomas Paine Did you read todays GOOD shooting? >>>KEEPANDBEARARMS.COM <<<

10-02-2008, 10:30 PM	#25
SolidVFR V.I.P. Member Join Date: Jun 2008 Posts: 346	Re: Contest question OK, well you've stumped me(that wasn't too hard). I'm still guessing just over 16psi. __________________ -USA- ~ Μολὼν λάβε ~ The Right of the People to Keep and Bear Arms SHALL NOT BE INFRINGED.