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The base is made in such a way that the soda can withstand more pressure up to 90 pounds per square.
Soda cans can withstand up to 90 pounds of pressure per square inch.
According to Reader’s Digest, there are two main features in the design of soda cans that play a key role in their functionality. The first is the indentation at the base of the can. Unlike flat bases, most soda cans have a concave bottom to help withstand the high pressure created by carbon dioxide gas inside. As soda cans are made from thin aluminium that could easily be crushed, this concave design allows the can to resist pressure more effectively.
Soda cans can withstand up to 90 pounds of pressure per square inch without bursting. Another notable design feature is the raised edge at the base. This not only keeps cans stable on surfaces like tables or in the fridge but also makes stacking them in compact spaces more convenient. Many videos on social media have shown that you can even use the raised edge of one can to open another by pulling the tab against it.
However, this design is relatively recent. According to Reader’s Digest, soda cans initially had flat bottoms. Around 1967, major brands like Pepsi and Coca-Cola began using aluminium cans instead of bottles. Over time, the design evolved to include a raised edge, allowing people to open cans easily and stack them anywhere.
Similarly, a user on the social media platform Quora shared insight into the can’s design. They explained that while a spherical container might be ideal for holding pressurised contents, it would roll away, making it impractical. A sausage-like shape, however, is more efficient, as it stacks better. Pressurised cans, therefore, often feature at least three dimples at the bottom, enhancing stability and helping them stand upright.