A half barrel keg, the standard keg size used in bars and restaurants in the United States of America, holds 15.5 gallons of beer, which is equivalent to approximately 58.67 liters. The weight of a half barrel keg depends on 2 main components: the weight of the empty keg itself and the weight of the beer it contains.

An empty half barrel keg (also known as a full-size keg) typically weighs about thirty pounds (13.6 kilograms). When it is filled with beer, the weight increases significantly. Since one gallon of beer weighs approximately 8.34 pounds, 15.5 gallons of beer weighs about 129 pounds (58.5 kilograms). When you add the weight of the beer to the weight of the empty keg, a full half barrel keg weighs approximately 159 pounds, or about 72 kilograms.

This is important to consider if you’re planning to transport or lift a full keg, as it requires proper handling to avoid injury or accidents. Most commercial establishments use keg dollies, hand trucks, or built-in tap systems to manage these heavy kegs safely. At home, lifting a full half barrel without assistance can be relatively complicated due to its weight and size.

It's also worth noting that different keg types and materials may vary marginally in weight. For example, kegs made of stainless steel are heavier than those made from lighter composite materials. On the other hand, most commercial half barrel kegs are made of durable stainless steel for sanitary and pressure-resistant purposes.

In conclusion, a full half barrel keg of beer weighs around 159 pounds (72 kg), combining the weight of the beer and the keg itself. Proper storage, lifting techniques, and equipment are fundamental when handling full kegs safely.

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