Tank size

[busnut104]

Can any one tell me how many gallons are in a tank 44" by 30" by 8.5" This is the size of my black water tank. Thanks.

[niles500]

48.57 gallons

there are 7.48 gallons per cu. ft.

HTH

[jjrbus]

11220 cu inch  = 48.57 gal

[bobofthenorth]

If you want to work in real gallons - not that wimpy xxx thing you xxxxx call a gallon - then it's 6.24 gallons to the cubic foot

[TomC]

My my, Bobofthenorth.  Let's not get testy about figures that are obviously different from the states to the provences.  Here in the lower 48, 7.48 gallons per cu ft is correct.  I don't know where you get your 6.24 gallons to the cubic foot-maybe the gravity is different in Canada? Good Luck, TomC

[DrivingMissLazy]

I have heard that some of the backward countries still use imperial gallon as a unit of measure. LOL
Richard

My my, Bobofthenorth.  Let's not get testy about figures that are obviously different from the states to the provences.  Here in the lower 48, 7.48 gallons per cu ft is correct.  I don't know where you get your 6.24 gallons to the cubic foot-maybe the gravity is different in Canada? Good Luck, TomC

[Jeremy]

U.S. liquid gallon is 231 in³ (exactly) or 128 U.S. fluid ounce (exactly) or 3.785411784 litres
U.S. dry gallon 4.404 884 L
Imperial (UK) gallon is 160 imperial fluid ounces (exactly), or 4.54609 L (legally). That is approximately 1.201 US gallons.


I guess some evaporation took place when the original gallon came across on the Mayflower

Jeremy

[chris4905]

Busnut104,

Another way to figure your own gallons, is Width x Height x Length (all of those in inches) divided by 231 = gallons.

Chris

[Stan]

Jeremy: I think you have the answer. The main thing carried in barrels on sailing ships was rum. On a long jpurney you would expect to have some shrinkage!

[eglluvr]

U.S. liquid gallon is 231 in³ (exactly) or 128 U.S. fluid ounce (exactly) or 3.785411784 litres
U.S. dry gallon 4.404 884 L
Imperial (UK) gallon is 160 imperial fluid ounces (exactly), or 4.54609 L (legally). That is approximately 1.201 US gallons.


I guess some evaporation took place when the original gallon came across on the Mayflower

Jeremy

I was gonna go for the rum thing too....LOL  But figured i'd bore everyone with my Mad Google skillz

At one time, the volume of a gallon depended on what was being measured, and where it was being measured. But, by the end of the 18th century, three definitions were in common use:

The corn gallon, or "Winchester gallon", of about 268.8 in³ (4.405 L),
the wine gallon, or "Queen Anne's gallon", which was 231 in³ (3.79 L), and
the ale gallon of 282 in³ (4.62 L).
The corn or dry gallon was used in the United States until recently for grain and other dry commodities. It is one eighth of the (Winchester) bushel, originally a cylindrical measure of 18½ inches in diameter and 8 inches depth. That made the dry gallon 9¼²·π in³ = 268.80252 in³. The bushel, which like dry quart and pint still sees some use, was later defined to be 2150.42 in³ exactly, making its gallon 268.8025 in³ exactly (4.404 842 803 2 L). In previous centuries there had been a corn gallon of around 271 to 272 cubic inches.

The wine, fluid or liquid gallon is the standard U.S. gallon since the early 19th century. The wine gallon, which some sources relate to the volume occupied by eight medieval merchant pounds of wine, was at one time defined as the volume of a cylinder six inches deep and seven inches in diameter, i.e. 6·3½²·π = 230.90706 in³. It had been redefined during the reign of Queen Anne, in 1706, as 231 in³ exactly (3 × 7 × 11 in³), which is the result of the earlier definition with π approximated to 22⁄7. Although the wine gallon had been used for centuries for import duty purposes there was no legal standard of it in the Exchequer and a smaller gallon (224 in³) was actually in use, so this statute became necessary. It remains the U.S. definition today.

The original ratio between corn and wine gallon is 9¼²:6·3½² = 1369:1176, but 268.8:231 is exactly 64:55 or ca. 13:11. This approximation is still applicable, although the ratio of 1.164 115 646 slightly changed to 1.163 647 186 with current definitions (268.8025:231 = 107521:92400 ~= 1344:1165). ^^ In some contexts it is or was necessary to disambiguate between those two U.S. gallons, so "liquid" or "fluid" and "dry" respectively are then added to the name.

In 1824, Britain adopted a close approximation to the ale gallon known as the Imperial gallon and abolished all other gallons in favor of it. Inspired by the kilogram–liter relationship, the Imperial gallon was based on the volume of 10 lb. of distilled water weighed in air with brass weights with the barometer standing at 30 inches of mercury and at a temperature of 62 °F. In 1963, this definition was refined as the space occupied by 10 lb of distilled water of density 0.998 859 g/mL weighed in air of density 0.001 217 g/mL against weights of density 8.136 g/mL. This works out at approximately 4.546 090 3 L (277.441 6 in³). The metric definition of exactly 4.546 09 dm³ (also 4.546 09 L after the liter was redefined in 1964, ca. 277.419 433 in³) was adopted shortly afterward in Canada; for several years, the conventional value of 4.546 092 L was used in the UK, until the Canadian convention was adopted in 1985.

Before and into the 19th century there were also several other gallons in use. Examples:

224 in³ 
standard wine gallon preserved at the Guildhall
231 in³ 
statute of 5th of Queen Anne
264.8 in³ 
ancient Rumford quart (1228)
265.5 in³ 
Exchequer (Henry VII., 1091, with rim)
266.25 in³ 
ancient Rumford (1228)
268.75 in³ 
Winchester, statute 13 + 14 by William III.
271 in³ − 2 spoonfuls 
Exchequer (Henry VII., 1601, E.E.)
271 in³ 
Exchequer (1601, E.), corn
272 in³ 
corn (1688)
277.18 in³ 
coal, statute 12 of Anne
278 in³ 
Exchequer (Henry VII., with copper rim)
278.4 in³ 
Exchequer (1601 and 1602 pints)
280 in³ 
Exchequer (1601 quart)
282 in³ 
Treasury (gallon for beer and ale)


All I know is that when it comes to fuel, You never get more than you pay for....

Jim