How is the 'slope or grade' defined in the context of septic systems?

In the context of septic systems, the term 'slope or grade' specifically refers to the rate of fall or rise of a pipeline or ground surface. This definition is crucial because the slope impacts the movement of wastewater through the system, ensuring it flows correctly through pipes and into the drain field. Proper slope is essential for gravity to effectively transport wastewater, preventing issues like backups or inadequate drainage.

Understanding the slope also plays a significant role in the design and installation of septic systems. A slope that is too steep may cause vicious flow and turbulence, while a slope that is not steep enough could result in stagnation, both leading to system failure. The slope must be calculated and maintained according to local regulations and guidelines to ensure that the septic system functions efficiently and effectively.