0

I currently have a 750 litre overhead water tank installed. Is it possible to install a 5000 litre water tank in the same place? Would the weight be a concern? The house is a two storied buliding bulit on a 1200 square feet site. The total height of building is about 23 feet. Thanks beforehand.

2
  • 2
    So you want to replace a tank that weighs about 1000kg with one that is 5 times heavier? Get it checked by an architect or engineer.
    – Solar Mike
    Commented Aug 16, 2020 at 10:34
  • 2
    Closer to 7 times heavier (the contents 6.667 and then the empty tank will weigh more too.) You could very easily go from 23 feet / 7 meters high to a pile of rubble a few feet/meters high, with loss of life. Definite need for a structural/civil engineer assessment. A safer alternative might be a ground level tank for more storage and a pump to the existing tank.
    – Ecnerwal
    Commented Aug 16, 2020 at 11:11

2 Answers 2

5

You need a structural engineer. There is no way for us to judge the stability of your roof

0

750 litres weighs -- well I'll spare you the gory math as it would make the answer too long, but it comes out to 750 kilograms or 1650 pounds. Or the weight of a small car.

Now I wouldn't put that on my roof without architectural review.

Now, you propose to put a 5000 litre tank there, which is 5000 kilograms (11,000 lbs). Or the weight of a semi tractor.

enter image description here

So no... even the 750l tank is a risk. You need an engineer to certify and/or reinforce the building.

2
  • but, without an overhead tank, can we get running water for daily use? I think every office or residential building should have an overhead tank
    – vidyarthi
    Commented Aug 17, 2020 at 6:47
  • 1
    @vidyarthi Just have a competent engineer either certify the building or reinforce it. Alternately you can make the tank smaller or use several small tanks. A 100l tank weighs about the same as a human, you can have several spread out and connect the bottoms; they'll act like one big tank. A smaller tank just means needing to refill more often. If on-site storage is an issue, the big tank could be downstairs. Flush toilets and wash water are a huge boon to survival and quality of life esp. children, but it defeats the purpose if the building falls on your head. Commented Aug 17, 2020 at 15:36

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.