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Old 07-06-2009, 12:03 PM   #1
saix
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Any structural engineers?



I want to put a 90 gallon marine aquarium in my bedroom on a wall that is about 10 feet long. Just wondering in general if it could hold before it's a must to get someone in here...
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Old 07-06-2009, 02:29 PM   #2
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what do you mean on the wall?

like put a shelf then put the water tank on top of the shelf thats hanging off the wall?

I think youre going to need legs for that because 10 feet of wall is going to be like 4 studs or so, and if those are not 2x4s or 2x6s might be too much weight. 90 gallons is like 350 kg. Alot of weight. IT really depends on the construction of your house behind the drywall. aka what you cant see.
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Old 07-06-2009, 03:16 PM   #3
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What will be the weight of the tank (filled, with the fish/stones etc)? What kind of glass is it?

What's the exterior of the house, siding, brick..?

Do you want to 'hang' it on the wall or have a supporting shelf under it?
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Old 07-07-2009, 12:58 AM   #4
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16" on center for 2x4 studs is minimum code. That means for 10' long aquarium he is looking at least 7 studs. 100 lbs per stud is the max that can be applied at the midpoint of the stud, the lower the better, but lets say your aquarium full of water can not weigh more than 700 lbs to be fully supported by wall studs alone with an appreciable factor of safety. 90 gallons of water is approx 750 lbs.

In other words, more info required.
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Old 07-07-2009, 11:08 AM   #5
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for all you know it could be in the basement with 2x2 strapping lol
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Old 07-07-2009, 11:12 PM   #6
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Quote:
Originally Posted by Axxe View Post
16" on center for 2x4 studs is minimum code. That means for 10' long aquarium he is looking at least 7 studs. 100 lbs per stud is the max that can be applied at the midpoint of the stud, the lower the better, but lets say your aquarium full of water can not weigh more than 700 lbs to be fully supported by wall studs alone with an appreciable factor of safety. 90 gallons of water is approx 750 lbs.

In other words, more info required.
Source on the 100lb figure?
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Old 07-07-2009, 11:27 PM   #7
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might be ontario building code.
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Old 07-08-2009, 02:27 AM   #8
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Originally Posted by black bnr32 View Post
Source on the 100lb figure?
OBC. I can't remeber if it's 100 or 120, so I rather play it safe with 100. That figure is assuming the load is right against the drywall.
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Old 07-08-2009, 06:24 AM   #9
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I would use leg supports.
The weight of the aquarium won't only be vertical loads as it's not located on the top of the wall, but attached to the side.
You have to take in account the horizontale load created by the connection of the horizontal support to the stud located in the wall.

Just build yourself a nice little shelf to go under your aquarium. That will save you a lot of headache...
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Old 07-08-2009, 06:59 AM   #10
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ROFL...sorry bad wording, I'm not putting the aquarium ON a wall, I meant it's going AGAINST a wall. I was just worried that so much weight being on the 2nd floor *3rd if including the basement* I found out it should be alright, especially since their is another wall directly below it, meaning if I put the aquarium in that area against the wall it should hold.

A 90g aquarium weighs 1050 lbs filled, 90+ lbs of live rock, sand probably weighs 75 lbs - 100 lbs, 30g sump 348 lbs.

Total 1563 lbs. or 710 kg. I've never heard of an aquarium going through the floor, but I hhave heard of leakage stories all the time. Also the weight of the tank is dispersed across the floor instead of a single spot.

Last edited by saix; 07-08-2009 at 07:02 AM.
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Old 07-08-2009, 08:48 AM   #11
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no
1 litre of water = 1kg
90 gallons times 3.75 litres = 337 kg times 2.2 = is 742 pounds. And thats if you put 90 gallons in it, you said youd put rocks, etc in it, also just because its 90 gallons doesn't mean you actually put 90 gallons in it.
So with rocks, sump etc, youre probably looking at around 800 pounds as a rough estimate.

----- edit- i didn't take into account the weight of aquarium -------

850 to 1000 pounds spread over 10 feet with floor joints every foot is fine. If there is a load bearing wall under the spot where you put the tank, even better. The question about the wall is really irrelant. If the tank is "leaning" on the wall like that, then youll have different problems- like the tank cracking and breaking. The load should be vertical.

unles your house was made in the 17 hundreds, and has termites, you should be more then alright. We got a waterbed thats about 90 gallons as well, aint been any problems with that and thats on the 3rd floor, with no load bearing walls under at all.
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