How long should it take to build up air ina typical serviceable air brake system on a rigid good vehicle?

In a typical serviceable air brake system on a rigid goods vehicle, it should take approximately 5 to 10 minutes to build up air pressure to the required level, usually around 90 to 100 psi. This time can vary based on the system's design, the size of the air reservoir, and the condition of the components. Proper maintenance can ensure efficient air pressure buildup.