A gallon of water weighs approximately 8.34 pounds (3.78 kilograms). So, 5 gallons of water would weigh about 5 times that amount, which is roughly 41.7 pounds. This weight is based on the density of water, which is about 8.34 pounds per gallon at room temperature.
Weight of water depending on their density which is defined as ratio of mass per unit volume, there is an usual phenomenon and properties regarding density of water, it will varies according to temperature, gravity and altitude due to molecular hydrogen bond.
Cold water is denser than ice or warm water or liquid just above freezing, so weight of a gallon of colder water is slightly more than warm water and ice, altitude and gravity also affect the weight of water, at high altitude in hilly areas density of water would be decreases, so weight of a gallon of water on earth surface would be more than water on higher altitude. Their exact difference would depends on temperature but it does not make value by much.
Water is one of the most important building substance required to prepare concrete mix, cement mortar and curing of concrete after pouring, it will also require in curing of brick wall, wall putty mixing and curing of cement plaster work, there is huge work of water in civil construction so you can’t imagine concrete without water.
Volume of water measures in gallon, capacity of liquid to hold, there are three size of gallon are used today, British Imperial gallon used in UK, Canada and some Caribbean countries, which is equal as 1 Imperial gallon = 4.546 litres, US gallon used in United state and some Latin American countries, which is equal as 1 US gallon = 3.785 litres, and US dry gallon which is equal as 4.405 litres.
● 1 Imperial gallon = 4.546 litres
● 1 US gallon = 3.785 litres
● 1 US dry gallon = 4.405 litres
How much does a gallon of water weight
As mentioned above, weight of a gallon of water depending on their density which would be vary upon temperature, altitude and gravity.
Density of water
1) 32°F/ 0℃ – 0.99987kg/ litre
2) 39.2°F/ 4℃ – 1kg/ litre
3) 70°F/ 21℃ – 0.99802kg/ litre
Weight of a gallon of water at 32°F/ 0℃
A Us gallon of water weight around 8.3259 lbs or 3.7845kg and an Imperial gallon (UK) weight weight around 9.9998 lbs or 4.545kg at 32°F/ 0℃ temperature.
Weight of a gallon of water at 39.2°F/ 4℃
A Us gallon of water weight around 8.327 lbs or 3.785kg and an Imperial gallon (UK) weight weight around 10 lbs or 4.546kg at 39.2°F/ 4℃ temperature.
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Weight of a gallon of water at 70°F/ 21℃
A Us gallon of water weight around 8.31 lbs or 3.77kg and an Imperial gallon (UK) weight weight around 9.97 lbs or 4.536kg at 70°F/ 21℃ temperature.
Regarding this, “How much does a gallon of water weight” taking as standard density of water as 1kg/ litre, generally a US gallon of water weight around 8.327 lbs or 3.785kg and an Imperial gallon (UK) weight weight around 10 lbs or 4.546kg at 39.2°F/ 4℃ temperature.
Regarding this, “How much does 5 gallon of water weight” taking as standard density of water as 1kg/ litre, generally 5 US gallon of water weight around 41.635 lbs or 18.925kg and an Imperial gallon (UK) weight weight around 50 lbs or 22.73kg at 39.2°F/ 4℃ temperature.
Conclusions:-
A gallon of water weighs approximately 8.34 pounds (3.78 kilograms). So, 5 gallons of water would weigh about 5 times that amount, which is roughly 41.7 pounds.