Questions tagged [engineering]
Questions related to the design, development, construction, and use of human-made objects. General tag for mechanical and electric systems, tools, machinery, building design and construction, military engineering, aircraft, and complex system design.
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Why are so many metros underground? Isn't that more expensive than an elevated system?
Starting with the London Underground in 1863, why are so many metros/subways built underground (as opposed to en elevated metro)? This requires a lot of digging and excavation, which to me seems a lot ...
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Why did Chicago and other cities choose an L (elevated metro) when most others chose underground subways?
From my related question, I'm trying to understand the decision-making that went into metro/subway design.
Why did Chicago choose an elevated metro system instead of an underground subway? Most other ...
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When were public roads cleaned electromagnetically?
In the first half of the 20th century, tires were more often punctured, so metal waste on the roadway was a bigger problem. The book "Lorries, Trucks and Vans 1897-1927" features an electromagnetic ...