Georgia Septic Installer Practice Test

What is the formula for calculating sewage flow rates in non-residential facilities?

1. ((Percolation coefficient)(sqrt(t)/5)x gallons per day)/trench bottom width in feet

2. ((Percolation coefficient)(t/5)x gallons per day)/trench bottom width in feet

3. ((Percolation coefficient)(sqrt(t)/10)x gallons per day)/trench bottom width in feet

4. ((Percolation coefficient)(sqrt(t)/5)x gallons per week)/trench bottom width in feet

The correct answer is: ((Percolation coefficient)(sqrt(t)/5)x gallons per day)/trench bottom width in feet

The formula for calculating sewage flow rates in non-residential facilities is correctly defined as ((Percolation coefficient)(sqrt(t)/5)x gallons per day)/trench bottom width in feet. This formula takes into account the percolation coefficient, which represents the soil's ability to absorb water, and utilizes the square root of the time variable (t). Dividing by five standardizes this estimate for daily output, improving accuracy for sewage system design. In this context, 't' generally refers to the time frame relevant to the calculation, such as the time required for the effluent to percolate through the soil. This parameter is crucial for determining how much sewage can be effectively treated without overwhelming the system. The inclusion of the trench bottom width in feet in the denominator allows for the calculation to reflect the size and capacity of the septic system, ensuring that the flow rate aligns with the physical dimensions of the actual installation. This relation is critical for separating flow rates to avoid issues related to overloading and inefficiency in treatment. Thus, this formula effectively integrates factors that influence sewage flow, ensuring that non-residential facilities are assessed for their specific needs based on the characteristics of the site and soil.