lotus

previous page: 17 Chemical Concentrations
  
page up: Newsgroup Topics and Conversion Tables FAQno next page

18 Tank Weight and Volume Calculations




Description

This article is from the Aquaria Newsgroup Topics and Conversion Tables FAQ, by Todd Zebert and Erik Olson with numerous contributions by others.

18 Tank Weight and Volume Calculations

In metric, this calculation is quite easy because 1 cubic centimeter
of water has a mass of 1 gram, or 1 liter of water has a mass of 1 kg.
Thus, the water in a 200L tank will have a mass of 200 kg (don't
forget to add the weight of rocks into your estimate!). If you need to
work from tank dimensions, multiply the length times width, times
height in centimeters to obtain the mass in grams.

For those of us having to work in inches and pounds,

1 gallon of water at 4C = 8.57 lbs approximate weight
One foot of fresh water depth = .445 psi.
231 cu inches (in ^ 3) = 1 gallon
1 cu foot (ft ^ 3) = 7.48 gallons = 1728 in^3

Example:

44x16x16 tank = 11264 in^3 = 48.76 gallons.

Tank will weigh 418 lbs (roughly) (+ rocks which have an SG much
higher than 1, so you can *roughly* say " + rocks ")

The pressure at the bottom of the tank will be 0.59 psi, or 85 psf,
roughly 13% more than the standard loading for code construction, so
catch an extra joist or three with the stand!!

Along the bottom strip of the tank, you will have a total (uniformly
spread side to side) force of ( 15.5/12*.445*44 = 25 lbs) pushing
outwards against your joints.

The total force on the long side will be ( 8/12*.445*44*16 = 208
pounds).

Note: In general, this is NOT half of the water weight. This is a
coincidence due to the same bottom and side shape.

Other useful points...

Weight = psi at bottom * bottom area
( (44x16=704 in^2) * .445*16/12 = 418 lbs)
Note: If this doesn't give you the same answer as the volume
calculation SOMETHING IS WRONG!

Standard (new) wood joist floor loading is 75 psf. This corresponds to
one 14" high tank of any other dimensions. Before you build that 30"
high tank, think about where it goes! For old houses and houses not to
code, this may be worse (or better, who knows?).

Common tank sizes (courtesy of All-Glass Aquariums)

These match the table on the back of Catalog AA693, but are sorted by
the tank's "footprint".

 Tank Size       Exact Outside Dimensions        Weight  Weight  Tempered
                (inches) (L x W x H)            Empty   Full    Bottom
                (Including frame)               (lbs)   (lbs)
 
 10 Leader       20 1/4  x 10 1/2  x 12 9/16     11      111
 15 High         20 1/4  x 10 1/2  x 18 3/4      22      170
 20 X-High       20 1/4  x 10 1/2  x 23 3/4      32      232
 
 10 Long         24 1/4  x  8 1/2  x 12 5/8      16      116
 15 Show         24 1/4  x  8 1/2  x 16 5/8      22      170
 
 15 Gallon       24 1/4  x 12 1/2  x 12 3/4      21      170
 20 High         24 1/4  x 12 1/2  x 16 3/4      25      225
 25 Gallon       24 1/4  x 12 1/2  x 20 3/4      32      282
 30 X-High       24 1/4  x 12 1/2  x 24 3/4      41      340
 
 20 Long         30 1/4  x 12 1/2  x 12 3/4      25      225
 29 Gallon       30 1/4  x 12 1/2  x 18 3/4      40      330
 37 Gallon       30 1/4  x 12 1/2  x 22 3/4      45      415     X
 
 26 Flatback     36 1/4  x 12 1/2  x 16 5/8      42      300     X
 23 Long         36 1/4  x 12 5/8  x 13          32      253
 30 Gallon       36 1/4  x 12 5/8  x 16 3/4      43      343
 38 Gallon       36 1/4  x 12 5/8  x 19 3/4      47      427
 45 Gallon       36 1/4  x 12 5/8  x 23 3/4      66      515     X
 
 30 Breeder      36 3/16 x 18 1/4  x 12 15/16    48      348
 40 Breeder      36 3/16 x 18 1/4  x 16 15/16    58      458
 
 50 Gallon       36 7/8  x 19      x 19 5/8      100     600
 65 Gallon       36 7/8  x 19      x 24 5/8      126     775
 
 33 Long         48 1/4  x 12 3/4  x 12 7/8      52      382     X
 40 Long         48 1/4  x 12 3/4  x 16 7/8      55      455     X
 45 Long         48 1/4  x 12 3/4  x 19          60      510     X
 55 Gallon       48 1/4  x 12 3/4  x 21          78      625     X
 60 Gallon       48 3/8  x 12 7/8  x 23 7/8      111     710     X
 
 80 X-High       48 7/8  x 14      x 30 3/4      200     990
 
 75 Gallon       48 1/2  x 18 1/2  x 21 3/8      140     850
 90 Gallon       48 1/2  x 18 1/2  x 25 3/8      160     1050
 110 X-High      48 7/8  x 19      x 30 3/4      228     1320
 
 120 Gallon      48 1/2  x 24 1/4  x 25 1/2      215     1400
 
 100 Gallon      72 1/2  x 18 1/2  x 19 3/8      182     1150
 125 Gallon      72 1/2  x 18 1/2  x 23 3/8      206     1400
 150 Gallon      72 1/2  x 18 1/2  x 28 1/2      338     1800
 
 180 Gallon      72 1/2  x 24 1/2  x 25 5/8      338     2100
 
 2 1/2 Mini      12 3/16 x  6 1/8  x  8 1/8      2.6     27
 5 1/2 Gallon    16 3/16 x  8 3/8  x 10 1/2      7       62
 
 4 Designer       8 1/4  x  8 1/4  x 18 7/8      9       49
 6 Designer       8 1/4  x  8 1/4  x 24 7/8      10.5    70
 10 Designer     13 5/8  x 13 5/8  x 19          18.5    115
 15 Designer     13 5/8  x 13 5/8  x 25          25.5    175
 
 10 Hexagon      14 1/2  x 12 9/16 x 18 3/4      12      110
 20 Hexagon      18 3/4  x 16 1/4  x 20 5/8      23      220     X
 35 Hexagon      23 1/4  x 20 3/16 x 24 3/4      43      390     X
 60 Hexagon      27 1/4  x 24 1/8  x 29 1/2      110     750     X







 

Continue to:













TOP
previous page: 17 Chemical Concentrations
  
page up: Newsgroup Topics and Conversion Tables FAQno next page