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Old 10-01-2017, 01:42 PM   #1
Mini-Skoolie
 
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Can the bus handle the weight?

We are putting a gravity fed water system in our bus to avoid using a water pump and to utilize the space on top of the bus. We are putting a deck on the roof and the 250 gallon water tank as well. How do we figure out if the roof can support that kind of weight?

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Old 10-01-2017, 02:02 PM   #2
Skoolie
 
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Me personally, I would not mount a 250 gallon water tank up that high. You're talking 2000 lbs of weight 10 feet off of the ground. That's going to make your bus extremely top heavy.
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Old 10-01-2017, 02:03 PM   #3
Skoolie
 
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I'd say not a chance your talking literally a ton of water when tank is full.
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Old 10-01-2017, 02:05 PM   #4
Skoolie
 
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There are other pumps available. Doesn't need to be an electric pump. I put a foot pump like on a boat in my bus. And my tank is under the sink.
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Old 10-01-2017, 02:07 PM   #5
Mini-Skoolie
 
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We aren't worried that much about the pump part of it we just want a lot of water storage and figured since we've seen huge decks and vw buses mounted to the top of buses that maybe it could handle some weight.

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Old 10-01-2017, 02:16 PM   #6
Skoolie
 
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Roof deck maybe 500lbs. Depending on framing. The vw mounted on top thats basically just sheet metal. With windows. Even if you could add the structure support to hold the 250 gal. I wouldn't want to make any turns in that rig. Plus, water sloshing around your ride would be swaying from side to side.
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Old 10-01-2017, 02:17 PM   #7
Skoolie
 
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I hear you totally about the roof space. Its very large and quite inviting to some creative ideas
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Old 10-01-2017, 02:22 PM   #8
Mini-Skoolie
 
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So say we are determined to have some sort of water tank on the roof. What do you think the roof can handle weight wise? That's spanning at least 2 roof bows where the structure of the roof is.

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Old 10-01-2017, 02:27 PM   #9
Bus Geek
 
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Quote:
Originally Posted by rensch26 View Post
Me personally, I would not mount a 250 gallon water tank up that high. You're talking 2000 lbs of weight 10 feet off of the ground. That's going to make your bus extremely top heavy.
I have to agree with Rensch.

2000 lbs of water between the frame rails is a tall order. I'm afraid that much weight on the roof would be down right dangerous.

Perhaps even worse would be having the tank half full and having it slosh to the outside when you turn a corner.

Remember "levers & moments" from high school physics?

I am curious as to why you don't want a water pump? If you did put a water tank on the roof and relied on gravity feed you will, depending on the location of fixture, have 1.5 to 3 psi of water pressure. Pretty puny.....
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Old 10-01-2017, 02:29 PM   #10
Skoolie
 
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I'd be fairly comfortable with under 1000lbs up there centered. I'm no engineer tho. Someone smarter than me will probably chime in. I'd say mount your tank, and take a test ride. I learn by trial and error myself. Find out how much to fill your tank.
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