Final answer:
The calculations for a controlled flow roof drainage system must be submitted to the local authorities to comply with building codes and ensure safe design.
Step-by-step explanation:
Calculations for the controlled flow roof drainage system should be submitted along with plans to the local authorities. These calculations are crucial for ensuring that the design meets local building codes and regulations.
During the engineering design process, engineers must consider various factors that affect the rate of the flow of water through a hose, among other aspects of the drainage system. These factors are instrumental in creating efficient and safe water drainage systems for buildings.