Why are hollow through bolts used in a water leg?

Hollow through bolts are used in a water leg specifically to allow for detection of leaks if the bolt fails. This design enables any potential leaking fluid to flow through the bolt and make it visibly apparent, alerting operators or engineers to a problem that needs to be addressed. By having a hollow structure, it creates a pathway for fluids, making leak detection simpler and more effective. This feature is particularly important in systems where maintaining water tightness is crucial for operational safety and efficiency.

Other options do not align with the specific function of hollow through bolts in the context of a water leg. Reducing weight and enhancing mobility could be advantages in various engineering applications, but they do not directly pertain to the structural integrity or operational monitoring of a water leg. Cost minimization is a general manufacturing consideration and does not specifically justify the unique design features of hollow through bolts. Preventing overheating due to excessive heat absorption might be applicable in other contexts but is not relevant to the function of these bolts in the water leg scenario.