Which material is commonly associated with the framework of a Zeppelin?

The material commonly associated with the framework of a Zeppelin is aluminum. Aluminum was favored in the construction of Zeppelins primarily due to its lightweight properties and strength-to-weight ratio, which is crucial for airship design. This allowed for a more efficient lift-to-weight ratio, enabling the airship to carry heavier payloads while remaining buoyant. The use of aluminum also contributed to the overall durability and resistance to corrosion, making it ideal for the long durations that airships were often in operation.

Steel, while strong, is heavier and not as suitable for the lightweight requirements of airships. Fiberglass and wood, though useful in aviation, were not typically used for the structural framework of Zeppelins. Fiberglass is a modern material and would have been impractical during the early 20th century when Zeppelins were prominent. Wood, while historically significant in earlier aircraft, does not provide the structural integrity needed for the scales at which Zeppelins operated. Thus, aluminum emerges as the most appropriate choice for the framework of a Zeppelin.