break tank weight question

Joined
28 Dec 2014
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Location
Berkshire
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United Kingdom
hello everyone, hope you are well.

I want to get a break tank, 500litres - probably going for a https://pumpexpress.co.uk/shop/powertank-utility-variable-speed-water-pressure-booster/

I want to put it indoors , in the utility room.

i'm a bit concerned about the point loading of it, its gonna be 550kg or so on a 60 cm diameter spot. which may or may not go over a single joist / 2 joists or whatever is under the floor.

i dont know what is under the floor where i want to put it, but it is tiled and has underfloor heating possibly - I'm not entirely sure as we have not been here long and havent had the heating on and i cant test it right now as we are having a heat pump fitted and have no heating. when i do a tap test on the tiles, i get what sounds like hollow for 40cm then not hollow etc. so it might be joists, badly installed tiles or block and beam.

the place i want to put it is right next to an external wall, so i think there should be at least 30 cm of solid foundation under at least part of it. please tell me if i am wrong about that.

should i be cutting and lifting some tiles to find out what is under it?

my mate is a metal worker and he can cut me some 8 cm steel box section that i could make 2 or more runners out of and lay along the floor, one end on the foundations and the rest layoing along the wall to spread the weight, and put a steel base on top of it to sit the tank on, with some high density rubber under the steels to prevent point loading / cracking the tiles.

see pictures and photos for more info..

plumber said just put it in it will be fine....

am i worrying about nothing or should i be concerned?

break tank 2 WhatsApp Image 2026-08-20 at 18.50.20.jpeg


break tank right way round WhatsApp Image 2026-08-20 at 18.49.57.jpeg
 

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