Why is it necessary to maintain the slope in drainage pipes?

Maintaining the slope in drainage pipes is essential to ensure proper drainage and flow. A correct slope allows gravity to effectively transport wastewater and stormwater away from buildings and towards designated discharge points, such as treatment facilities or sewer systems. If the slope is too flat, water may not flow adequately, leading to stagnation and increasing the risk of blockages, which can cause backups and leaks. Conversely, if the slope is too steep, it may cause excessive velocity, which can erode pipes or create turbulence, but it's critical that the slope is within recommended parameters for optimal performance. Proper drainage is vital for preventing water damage, maintaining hygiene, and ensuring the overall functionality of the plumbing system.