Triangle tank volume

[aquamanis]

Ok, can one of you mathemetical genius help me out here. I want to work out the volume of a triangle tank. Whats the formula? :stupid:

 

[Alien Anna]

It'll be

Half base x height of triangle = triangle surface area.

Multiply that by the actual height of the tank and bob's your uncle.

 

[rosierabbit]

if its a right angled triangle, work it out as a square with sides those length, then half it

 

[graemesmith]

Grammar can make the first reply give a wrong answer and the second is correct but muddies the waters (groan)

Lets re-write it as:

FOR ALL ANGLED TRIANGULAR TANKS:

WIDTH x OTHER WIDTH x HEIGHT x 0.5

The triangular base - the widths are the two SHORTER edges and not the long one.

 

[aquamanis]

Thanks guys but I,m still having trouble getting my brain around this. Whats the unit of measure to work it out in metric? If the tank was 1 metre triangle by 60cm high whats the volume in litres?

 

[rosierabbit]

why dont you give us the measurements of your tank??

 

[Death Penguin]

Easier way is to count how many buckets it takes to fill tank. Then work out how much a bucket holds. This method takes into account any loss of volume due to rocks and stuff in the tank.

 

[aquamanis]

Goodaye Death, I haven,t got the corner tank yet. I,ve got a small feature wall that comes out 3 foot from another wall and I,m trying to work out the maximum size triangle tank I can fit there. Knowing what size=what volume is going to help me decide what size to buy and what equipment I need.

 

[Lithril]

Just to make things even more complicated you could always get a pentagonal corner tank instead of triangular - I've got one in my house and they look great - interesting working out the volume thoug, especially if maths isn't a strong point...

 

[Alien Anna]

Just to make things even more complicated you could always get a pentagonal corner tank instead of triangular - I've got one in my house and they look great - interesting working out the volume thoug, especially if maths isn't a strong point...

Hi, I've got a pentagonal tank. It's basically a square with a right-angled corner cut off. You work it out by calculating the square, then calculating the corner that was removed and finally by taking the second number from the first.

 

[Death Penguin]

I have had a look around the web to see if there are any little volume calculators that might be of use. The best i have found at the minute is this site

volume calculator

Not that intuitive to use though. It gives area so this must be multipled by height of tank to obtain volume.

 

[Lithril]

K now I feel more silly than I normally do, I've really got to stop making life hard for myself, I broke it down into triangles and worked it out like that :stupid:

 

[Waterloo Kid]

My wife's a teacher of 7 year olds. She'd tell me to draw the plan on squared paper and count the squares, then add all the bits of squares to it!
Personally as I think of myself as a grown up I would just draw it out on CAD and let the computer work it out! That works for ANY shape and I'm a lazy geezer!!!!!!! Technology is wonderful.



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Area = .5 x w x h

It'll work for all triangles.

Trust me, I'm an engineer! B)

WK

Edit: This looks great in edit mode, as opposed to a mess in viewing mode! Bum!!
Anyway, I'm a bridge engineer, not a computer engineer! Added dots to it. Doesn't look so good but it works.

 

[rosierabbit]

just thought of something - the box the tank comes in will have it written oh!!!

 

[Alien Anna]

just thought of something - the box the tank comes in will have it written oh!!!

Except that they tell lies - my Juwel tank has a brochure with it that claims its 110 litres. I couldn't work out how on earth you could fit 110 litres in it, especially given the column biofilter that requires the water level at least 2" from the top, but it turns out the that regulations allow manufacturers to record the outside volume, rather than the volume of water you can actually get in it. I estimate my tank's actual capacity to be nearer to 90-95 litres and that's the figure I always use when calculating medication or whatever.

My other tank, a more conventional rectangular tank claims to be 120 litres (according to the previous owner). However, it actually has a capacity of about 110 litres.