Large Scale Central

New Water Tower Build.....

Bob Davis’s Warwick Water Tower inspired me to want to add a water tower to my layout. The question is: What kind of water towers? So I started looking into it. I don’t include below narrow gauge water towers, wooden towers, or basically utilitarian-looking water towers. That leaves, near as I can tell, the following categories:

Novelty advertising towers:

Towers painted in some artist or unusual way:

Space-age-looking towers:

And finally, towers that look like brick-like structures, often rather “castle” looking, mostly European although there are some in the United States like the Chicago water tower, for instance:

However, the one I have tentatively chosen is in Johannesburg, South Africa. It’s more utilitarian but its visually complicated and has a lot of interesting features and layers, including the interesting lighting rod assembly. To be perfectly honest, I’m not sure I’m up to this because I haven’t worked in styrene or metal, and certainly have never done any soldering like Bob did. Ain’t gonna happen. So I’ll have to get ingenious. Also, the project may be doomed from the start if I can’t come up with a believable height for the structure. I don’t want it to dwarf everything else on the layout, but it has to give the appearance of great height at the same time. And the tank on the top has to be big enough to plausibly hold enough water to make all that construction seem like it’s worth it. I don’t know.

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First thing that jumped in my mind is big plastic Christmas ornament. That spherical tank with the cylindrical top is exactly a Christmas ornament. Also check out plastruc because they have all sorts of industrial shapes.

You can do this John. I am rooting for you.

But, water towers do dwarf surrounding structures. They have to be taller then all of the other buildings, if they are to provide running water to the top floors of those structures.

And usually quit a bit taller. .43 psi per foot. 150 foot tank yields 65 psi at the ground. And that’s at static water level. If the tank itself is 20 feet top to bottom you loose 8.5 psi when the tank is near empty. So a near empty tank is giving around 57 psi on the ground. If s three story building is being served and lets say the water is served 6 feet high to a shower on the third floor you lose another 26 feet of head or about 11 psi. Now you have 46 psi on a near empty tank at the shower head.

So tanks necessarily have to dwarf there surroundings at least in height.

Devon

Tanks for that info! (http://largescalecentral.com/externals/tinymce/plugins/emoticons/img/smiley-laughing.gif)

Devon, thanks. I knew someone would know more about the subject.

I have a fancy certificate that the State of Washington makes me renew every year to prove I know this stuff. At least enough to be dangerous.

Devon Sinsley said:

I have a fancy certificate that the State of Washington makes me renew every year to prove I know this stuff. At least enough to be dangerous.

If you’re so damn smart, how come you have to go all the way to Washington to get a license? Huh? They won’t certify you in Idaho? Ha! Well at least I know not to take a shower on the third floor in Idaho.

The Christmas ornament idea is brilliant, though.

I guess the only way of telling whether or not I should take this on is to make a quick and dirty mock-up and find somewhere for it on the layout and see if I can live with it. If I make it three feet tall and pretend I’m working in 1:32 scale, that would make it a 96 foot tall tower and give me…uh…uh…what was that you said about psi ???

To add to Devon’s crash course on water hydraulics, let’s not forget about the friction losses within the distribution system that conveys the water from the tank to the building in question. Depending on pipe diameter, roughness coefficient, velocity, distance from tank, etc., the tank may have to be quite a few feet higher to overcome those losses.

John, you wouldn’t want your customers to complain about low water pressure now would you?

While we are at it, the tank should probably be 20 (scale) feet higher then that. After all, old man Neeley keeps talking about adding another floor to the hotel. Then we need to talk about the volume of the tank, and getting more powerful pumps to fill the tank.

John,

Washington pays brtter, so I work in Washington. Simple as that.

And I didn’t want to get crazy. With the hydraulics lesson. But all of what has been said is true. Tank design is a complicated process. We paid an engineer big bucks to write an encyclopedia to tell us how big to build our new reservoir and where to locate it. We have an existing tank and he had to design it do that the overflow of the new one matched the elevation of the old one. He had to take into account the new tanks location on a hill and design the diameter to be such that the tanks volume met our requirements.

I don’t care who y’are, that thar eye is just down right creepy. I gotta have one.

Devon Sinsley said:
John, Washington pays brtter, so I work in Washington. Simple as that. And I didn’t want to get crazy. With the hydraulics lesson. But all of what has been said is true. Tank design is a complicated process. We paid an engineer big bucks to write an encyclopedia to tell us how big to build our new reservoir and where to locate it. We have an existing tank and he had to design it do that the overflow of the new one matched the elevation of the old one. He had to take into account the new tanks location on a hill and design the diameter to be such that the tanks volume met our requirements.

Nice. I wish I had a neighboring state where I could make more money! No such luck in my business. I’d have to move to … well I don’t want to say because I’d insult someone’s city.

I think all this hydraulics information is fascinating actually. I’ll look at the next water tower I see in a whole new light. Besides, I like hearing about the technicalities of other guys’ professions.

I was going to ask if that engineer would charge me on a 1:32 scale to design for me, but it sounds like even on a 1 to 32 pay scale it would be more than I make in a month.

We are literally in blizzard conditions here in Denver right now, so I doubt I’ll get much layout work accomplished today.

John Passaro said:
We are literally in blizzard conditions here in Denver right now, so I doubt I’ll get much layout work accomplished today.

Excuses … Excuses !

John, in the Mile High City, you would have 2,270.4 psi at the bottom of the tank. In 1:32, that would be 70.95 psi.

You’re welcome.

I warned that there would be an Indian Winter this year.

I was hoping for some precipitation to go along with these delightful 70s today… (http://www.largescalecentral.com/externals/tinymce/plugins/emoticons/img/smiley-wink.gif)

John

Steve Featherkile said:

I don’t care who y’are, that thar eye is just down right creepy. I gotta have one.

So then when you have that feeling that you are being watched, you can blame the water tower.

I love the first one: the Swedish coffee pot. I teach in Kingsburg where that water tower is…glad you found it.

Richard

edit: wrong photo. Give me a minute

Here is one a few miles from my house. There is also one just like it in South Carolina.