What must be ensured before a rocket is launched with respect to construction?

Before launching a rocket, it is crucial that it meets the criteria for structural integrity. This ensures that the rocket can withstand the forces and stresses it will encounter during launch, ascent, and throughout its mission. Structural integrity encompasses various factors, including the materials used, the design of the rocket, and the engineering standards adhered to during its construction. If a rocket does not maintain adequate structural integrity, it risks failing during launch or while in flight, which could lead to catastrophic failures, loss of the vehicle, and potential harm to people and property.

Other considerations might include functionality, like ensuring it has certain features for safety or performance, but without structural integrity, none of that would matter, as the rocket may not survive the launch at all. Therefore, the focus on ensuring structural integrity is paramount in the pre-launch checks.