Reinforcement of Concrete Tank...To Support 20 T

Hi Peter , Agreed on the top being designed for "itself"...Thanks for the frame work for PVC tank support.. Rgds Yves

Just out of curiosity, why do you want to collect water in a smaller tank before it overflows into the larger tank? Will you be using the water in the small tank for such things as flushing a toilet or something?

Hi Bill , Water is critical when you are self sufficient...and do not reply on Council supply ..we live from rain water ONLY...and pumping from creek if needed... Rgds Yves

http://en.wikipedia.org/wiki/Water_tower

http://www.pdfqueen.com/pdf/re/reinforced-concrete-elevated-water-tank/

http://www.water-towers.com/wtrsforsale.htm

http://www.motherearthnews.com/Do-It-Yourself/1976-05-01/I-Built-My-Own-Water-Tower.aspx

use old telegraph poles as the uprights

I think he wants to gravity feed it from the shed roof.

I would suggest build Six (6) concrete column right around (outside) the existing round tank and cross concrete beam on top. then if you want to make thin (100mm) concrete slab. however you must ensure the stability of your column foundation as you are going to have 20 cubic meter load. "I am thinking of placing a smaller tank (PVC) 10,000 or 20,000 litres on top" How did it becomes smaller at first you said. " I have a 10,000 liters

Kind regards

Roman

Hehehehe ...Good observation..the tank did not get smaller, but I am prepared to reduce the intake if "load" is too great .... from 20 T to 10 T...just question of feasibilty ..would prefer 20K litres..Thks Rgds Yves

Assuming that a vertical tank normally has a length that is 2.5 times the base. Why not install two new tanks vertical next to the existing tank, with each tank being i/2 of a 12,500 litre tank (base 180 cm with length (whole) at 450 cm?

That way, the top of your new tanks would be at 225 cm (capable of accepting flow from the drain) and you could flow from the bottom sides of the new tanks into a common line then into the shorter (big) tank (use a solenoid with a float switch to stop flow if the lower tank got "full") without a lot of hassle. Just pour a simple concrete pad and grout as required.

You could fabricate a simple stainless cover for the two new tanks and install an overflow line to prevent disrupting the lids.

Hi , It is possible , but I have not seen any such tanks in Ozland ....and my system would give me more gravity feed ....but helpful comment..Thks again Rgds Yves'

You would take one of the PVC tanks you discussed earlier and cut it in half at the mid-point of the long axis. The dimensions I used were speculation for a 12,500 litre tank, but- if a 15,000 litre or 20,000 litre tank would work (half the length is below drain point) that is just as fine.

The "exposed" area of the midpoint cut is what you would cover with the stainless plate.

You stated that you were looking at a 10,000 to 20,000 litre tank. Now you are saying that you will get more water than a 12,500 litre tank can hold. Which value is correct?

As indicated, you can "make" as many secondary tanks as you need by cutting a standard tank in half and then piping whatever number of tanks you end up with together. Do you need another 10,000 gallons (35,000 litres)? Then install that much.

Hi Yves,

Your tank is around 9,400 US gallon or 7,800 Imp. gallon big and you are in Australia. You have extreme precision on cm but the volume? The rest is correct? We can answer to your question because our if any "brain-wave" can work, Gil?

Hello / Salut Gil , The existing tank (concrete) is approx. 10,000 Gallon (UK/Imp) ... We have had more than 500 mm of rain in the last few months...and since the space between the gutter collection and existing concrete tank is so great , I thought I could use the space to fit (within safety) a smaller tank to collect all that "good water" going to the lake for the "dry season"...I would prefer 20 K litres tank but if it is too much stressed ...I would choose a smaller size tank (e.g. 10,000 litres)... Thank you for your time and "input" Bst rgds Yves

Hi Yves,

I don't know what you need exactly but here in Canada, we have gutters with a type of plastic carpet with 3, 4, or 6" long fours or spikes to eliminate to allow nesting birds, leaf accumulation, and other larger insects in the gutters. We take off, mainly flighing leaf or paper time to time and to flowing down water is clean without objects and other inconveniences. Here, we can see on the top of Billboards, walls, and other horizontal areas which must be protected and be clean. Wish you the best in solving your problem, Gil.