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Why are train roofs curved?

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This is a cross-section, showing the maximum allowed width and height for trains in Sweden. Note that the maximum height varies along the width. A curved roof fits nicely here: The reason for a maximum height is tunnels. read more

When a train is moving there is always a vacumn generated after every coach (the same as in a sedan shaped car, that is why sedan dont have rear windsheild wipers). The curved roofs help in generating less vacumn by pushing more air. As for the speed is concerned. The average speed must be 60 - 70 kmph. read more

This means that the roof can be very important in terms of creating your dream home. You are probably wondering why you should choose a curved roof for your home. The answer is simple: curved roofs maximize the available interior living space and they are more aesthetic. read more

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Curved Roof Stock Photos & Curved Roof Stock Images - Alamy
Source: alamy.com