Hi, I want to build a large water storage tank and an wondering what pressure a sips panel can take tank will be 2mx2mx3m tall so thats 28sqm of side walls +12 metric tons of water to hold what is normal side pressure per sqm a 12" thick sips can take

Posted By scottishjohn on 04 Nov 2018 09:55 AM
Hi, I want to build a large water storage tank and an wondering what pressure a sips panel can take tank will be 2mx2mx3m tall so thats 28sqm of side walls +12 metric tons of water to hold what is normal side pressure per sqm a 12" thick sips can take

700 lbs per sq meter
but you should just buy a water tank and not try to re-invent the wheel

a tank will then need insulation .and few tanks you can buy sensibly will take 90c unless steel and that size are mega cost and then the insulation to buy as well
always find it interesting how people mix imperial and metric measurements
so that works out not strong enough --
would have thought ground load in saturated wet conditions would be same as water --
back to ICF concrete option then

Posted By scottishjohn on 04 Nov 2018 11:47 PM
a tank will then need insulation .and few tanks you can buy sensibly will take 90c unless steel and that size are mega cost and then the insulation to buy as well
always find it interesting how people mix imperial and metric measurements
so that works out not strong enough --
would have thought ground load in saturated wet conditions would be same as water --
back to ICF concrete option then

my calculations are for above grade ,if it was below grade , it would be closer to 4,300 per sq meter, but I would never recommend putting a SIP below grade , besides steel tanks there are also polypropylene or fiberglass , either one is better than steel, below grade and can be insulated as well, it seems to make more sense to use a tank for the intended use of water storage

problem is temp --std polyprop no good for that temp and GRP needs special resin ,so again expensive .
its going to be free standing inside building structure so any heat loss goes into fabric of building.
so its back to concrete .or block and add liner .