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#1
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Does five gallon container contain five gallons?
The five gallon containers for plants always seemed small to me. Today I got
to measure one of them. When I calculated the volume, it was 3.4 gallons not five. Am I missing something? Is there a arcane standard for this? Bill |
#2
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Does five gallon container contain five gallons?
"Repeating Decimal" wrote in message ... The five gallon containers for plants always seemed small to me. Today I got to measure one of them. When I calculated the volume, it was 3.4 gallons not five. Am I missing something? Is there a arcane standard for this? Bill This seems a large discrepancy even for a container not selling product by volume. Which gallon (USA or Imperial) does the container use? How did you do the sums to work out your figure? David |
#3
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Does five gallon container contain five gallons?
Repeating Decimal wrote:
The five gallon containers for plants always seemed small to me. Today I got to measure one of them. When I calculated the volume, it was 3.4 gallons not five. Am I missing something? Is there a arcane standard for this? Bill That's about right. A gallon pot normally holds about 3/4 gallon. Don't try to make sense of it. Lorenzo L. Love http://home.thegrid.net/~lllove "We recognize, however dimly, that greater efficiency, ease, and security may come at a substantial price in freedom, that law and order can be a doublethink version of oppression, that individual liberties surrendered for whatever good reason are freedom lost." Walter Cronkite, in the preface to the 1984 edition of 1984 |
#4
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Does five gallon container contain five gallons?
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#5
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Does five gallon container contain five gallons?
"Repeating Decimal" wrote in message ... in article , David Hare-Scott at wrote on 6/26/03 4:37 PM: "Repeating Decimal" wrote in message ... The five gallon containers for plants always seemed small to me. Today I got to measure one of them. When I calculated the volume, it was 3.4 gallons not five. Am I missing something? Is there a arcane standard for this? Bill This seems a large discrepancy even for a container not selling product by volume. Which gallon (USA or Imperial) does the container use? How did you do the sums to work out your figure? David I used the US gallon which is the smallest on my calculator. I US gallon is 231 cubic inches. The formula I derived, although it should be available in reference books, is: V = (pi/3)*H*(R^2 +R*r+r^2). H is the height of the conical frustum representing the shape of the container. R and r are the upper and lower radii. H= 12 inches. R and r are each *half* of the diameters 9.75 and 8.5 inches respectively. Out comes 3.4Gal. Bill Bill Your sums are right giving 785 cu in and it seems (not being a native user of US gallons) there are in fact 231 cubic inches per US (liquid) gallon. So it looks like these pots are a very nominal 5 gallons. Since you are buying a plant not an amount of soil I don't suppose it matters much. I wouldn't want to buy soil, compost, etc from somebody who used those volume measures though :-) David |
#6
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Does five gallon container contain five gallons?
When I calculated the volume, it was 3.4 gallons
They also make 3 1/2 gal containers. They must have been mislabeled! Go back and complain! Don't let them get away with 1 1/2 gallons of your space! After all, isn't your space personal? If someone tried to take advantage of my personal space I'd give them what fur! Jack |
#8
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Does five gallon container contain five gallons?
On Fri, 27 Jun 2003 11:01:35 -0400, DigitalVinyl wrote:
Repeating Decimal wrote: in article , David Hare-Scott at wrote on 6/26/03 4:37 PM: "Repeating Decimal" wrote in message ... The five gallon containers for plants always seemed small to me. Today I got to measure one of them. When I calculated the volume, it was 3.4 gallons not five. Am I missing something? Is there a arcane standard for this? Bill This seems a large discrepancy even for a container not selling product by volume. Which gallon (USA or Imperial) does the container use? How did you do the sums to work out your figure? David I used the US gallon which is the smallest on my calculator. I US gallon is 231 cubic inches. The formula I derived, although it should be available in reference books, is: V = (pi/3)*H*(R^2 +R*r+r^2). H is the height of the conical frustum representing the shape of the container. R and r are the upper and lower radii. H= 12 inches. R and r are each *half* of the diameters 9.75 and 8.5 inches respectively. Out comes 3.4Gal. Your formula's correct. I imagine it is mostly blatant marketing lies...much like the fact that monitors would measure 15" but only be 13.5" while a 19" TV is always 19". DiGiTAL_ViNYL (no email) A 19" TV has the same viewing area as a 19" monitor, the convention of defining a CRT based on the maximum diameter of the tube itself rather than the actual size of the picture arose with TVs. Once something becomes an industry standard you can't change it even if it's widely regarded as wrong. Assuming that the OP is correct and that a 5 gallon pot is really 3.4 gallons then there is probably some rational explanation for this buried deep in the mists of time. If a pot were cylindrical rather than conical then maybe a pot with the same diameter as the mouth of the conical pot would hold 5 rather than 3.4 gallons (I haven't done the calculation but it feels right). As another poster pointed out, plants are sold in pots not dirt so their is no fraud involved. Dirt is sold in cubic feet or yards not in gallons. |
#9
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Does five gallon container contain five gallons?
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#11
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Does five gallon container contain five gallons?
in article , B. Joshua Rosen at
wrote on 6/27/03 9:13 AM: A 19" TV has the same viewing area as a 19" monitor, the convention of defining a CRT based on the maximum diameter of the tube itself rather than the actual size of the picture arose with TVs. Once something becomes an industry standard you can't change it even if it's widely regarded as wrong. Assuming that the OP is correct and that a 5 gallon pot is really 3.4 gallons then there is probably some rational explanation for this buried deep in the mists of time. If a pot were cylindrical rather than conical then maybe a pot with the same diameter as the mouth of the conical pot would hold 5 rather than 3.4 gallons (I haven't done the calculation but it feels right). As another poster pointed out, plants are sold in pots not dirt so their is no fraud involved. Dirt is sold in cubic feet or yards not in gallons. Would you buy a four inch tall tree in a 5 gallon pot for the same price as you would a 5 foot tall tree? Even if your got a full size tree in a small pot, it would be much more likely to be root bound, and require immediate repotting. Bill |
#12
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Does five gallon container contain five gallons?
in article , B. Joshua Rosen at
wrote on 6/27/03 9:13 AM: A 19" TV has the same viewing area as a 19" monitor, the convention of defining a CRT based on the maximum diameter of the tube itself rather than the actual size of the picture arose with TVs. Once something becomes an industry standard you can't change it even if it's widely regarded as wrong. Assuming that the OP is correct and that a 5 gallon pot is really 3.4 gallons then there is probably some rational explanation for this buried deep in the mists of time. If a pot were cylindrical rather than conical then maybe a pot with the same diameter as the mouth of the conical pot would hold 5 rather than 3.4 gallons (I haven't done the calculation but it feels right). As another poster pointed out, plants are sold in pots not dirt so their is no fraud involved. Dirt is sold in cubic feet or yards not in gallons. Would you buy a four inch tall tree in a 5 gallon pot for the same price as you would a 5 foot tall tree? Even if your got a full size tree in a small pot, it would be much more likely to be root bound, and require immediate repotting. Bill |
#13
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Does five gallon container contain five gallons?
"B. Joshua Rosen" wrote:
On Fri, 27 Jun 2003 11:01:35 -0400, DigitalVinyl wrote: Repeating Decimal wrote: in article , David Hare-Scott at wrote on 6/26/03 4:37 PM: "Repeating Decimal" wrote in message ... The five gallon containers for plants always seemed small to me. Today I got to measure one of them. When I calculated the volume, it was 3.4 gallons not five. Am I missing something? Is there a arcane standard for this? Bill This seems a large discrepancy even for a container not selling product by volume. Which gallon (USA or Imperial) does the container use? How did you do the sums to work out your figure? David I used the US gallon which is the smallest on my calculator. I US gallon is 231 cubic inches. The formula I derived, although it should be available in reference books, is: V = (pi/3)*H*(R^2 +R*r+r^2). H is the height of the conical frustum representing the shape of the container. R and r are the upper and lower radii. H= 12 inches. R and r are each *half* of the diameters 9.75 and 8.5 inches respectively. Out comes 3.4Gal. Your formula's correct. I imagine it is mostly blatant marketing lies...much like the fact that monitors would measure 15" but only be 13.5" while a 19" TV is always 19". DiGiTAL_ViNYL (no email) A 19" TV has the same viewing area as a 19" monitor, No, this hasn't been true- a class action lawsuit was filed and won against computer monitor manufacturers due to this. new SONY 36" HDTV = 36" viewable 15yr old 19" TV = 19" viewable 25yr old 19" TV = 19" viewable 5yr old 21" no-name = 20" viewable 7yr old 17" Nokia = 15.7" viewable 12yr old 16" Nanao = 14.5" viewable TVs are always accurate take a tape measure into a electronics store. Monitors used to be sold as 13,14,15,17,19,21 inches. Now you will see 15.9",18.1",20.1" these are formerly 17", 19", 21" monitors. They now show overly accurate sizes because for years they out and out lied. Viewable areas were as much as 2 inches smaller than stated. I got a check for a couple of bucks from the class action lawsuit regarding this. woo-hoo! the convention of defining a CRT based on the maximum diameter of the tube itself rather than the actual size of the picture arose with TVs. In my short lifetime Tvs have been accurate. CRTs were the only ones with discrepancies. In the last 15 years that I've bought TVs they have always been Once something becomes an industry standard you can't change it even if it's widely regarded as wrong. Assuming that the OP is correct and that a 5 gallon pot is really 3.4 gallons then there is probably some rational explanation for this buried deep in the mists of time. If a pot were cylindrical rather than conical then maybe a pot with the same diameter as the mouth of the conical pot would hold 5 rather than 3.4 gallons (I haven't done the calculation but it feels right). As another poster pointed out, plants are sold in pots not dirt so their is no fraud involved. Dirt is sold in cubic feet or yards not in gallons. Eliminating the slope from the pot will increase its volume only to 3.89 gallons. To get this 12" high pot to hold 5 Gallons you would have to increase its height to 18" tall. More than a slight change. I actually found "five gallon" pots on the net that were even smaller than this... they only hold 2.21 gallons. I bought planters online and when they said they were 22qt..they were 22 qt... 8 gallons was 8 gallons...But then they don't sell 5 gallon pots. They sell a 11" pot that holds 2 gallons. DiGiTAL_ViNYL (no email) |
#14
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Does five gallon container contain five gallons?
In our last fun filled episode, Fri, 27 Jun 2003 17:58:50 GMT,
Repeating Decimal proclaimed: It does matter! Bigger pots, supposedly have larger plants than smaller ones. This is especially true for fruit trees where the plants can be very expensive. On canned soup supplier was once nailed for filling its bowl with marbles in order to make you think you were getting more than you were. Wow, the manufacturer went to all the trouble and expense of driving to my house and putting marbles in my bowl? I'm certainly impressed by their industriousness. Pam, but I'm gonna have to have a talk with the Puppies O' Thunder about letting strange soup manufacturers in the house when I'm not home. the house. --- "Oh no, not again." - A bowl of petunias on its way to certain death |
#15
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Does five gallon container contain five gallons?
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