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If the discharge rate of a waste drain line is 601 GPM, what is the smallest pipe size that can be used if the slope of the drain line cannot be greater than 1/4 inch of fall per foot? Refer to table below

If the discharge rate of a waste drain line is 601 GPM, what is the smallest pipe size that can be used if the slope of the drain line cannot be greater than 1/4 inch of fall per foot? Refer to table below

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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If the discharge rate of a waste drain line is 601 GPM, what is the smallest pipe size that can be used if the slope of the drain line cannot be greater than 1/4 inch of fall per foot? Refer to table below

### Table 8.9: Approximate Discharge Rate (GPM) and Velocities (fps) in Half-full Sloping Drains This table displays the relationship between the actual inside pipe diameter and the corresponding discharge rates (GPM) and velocities (fps) for various slopes in half-full sloping drains. **Actual Inside Pipe Diameter (inches):** - 1½ - 2 - 3 - 4 - 6 - 8 - 10 - 12 **For Slopes:** 1. **1/16 in./ft Slope:** - **GPM and fps** are given only for a range of diameters. For example: - 4-inch diameter: 26.7 GPM, 1.36 fps - 6-inch diameter: 78.7 GPM, 1.79 fps 2. **1/8 in./ft Slope:** - **GPM and fps** are provided. For example: - 4-inch diameter: 37.7 GPM, 1.92 fps - 6-inch diameter: 111 GPM, 2.53 fps 3. **1/4 in./ft Slope:** - **GPM and fps** are given for all indicated diameters. For example: - 3-inch diameter: 24.8 GPM, 2.26 fps - 6-inch diameter: 157 GPM, 3.57 fps 4. **1/2 in./ft Slope:** - **GPM and fps** values are shown. For example: - 3-inch diameter: 35.0 GPM, 3.20 fps - 6-inch diameter: 223 GPM, 5.05 fps *Note: "Half full" means the pipe is filled to a depth equal to half of the inside diameter.* **Source:** Courtesy of the National Standard Plumbing Code.
Transcribed Image Text:### Table 8.9: Approximate Discharge Rate (GPM) and Velocities (fps) in Half-full Sloping Drains This table displays the relationship between the actual inside pipe diameter and the corresponding discharge rates (GPM) and velocities (fps) for various slopes in half-full sloping drains. **Actual Inside Pipe Diameter (inches):** - 1½ - 2 - 3 - 4 - 6 - 8 - 10 - 12 **For Slopes:** 1. **1/16 in./ft Slope:** - **GPM and fps** are given only for a range of diameters. For example: - 4-inch diameter: 26.7 GPM, 1.36 fps - 6-inch diameter: 78.7 GPM, 1.79 fps 2. **1/8 in./ft Slope:** - **GPM and fps** are provided. For example: - 4-inch diameter: 37.7 GPM, 1.92 fps - 6-inch diameter: 111 GPM, 2.53 fps 3. **1/4 in./ft Slope:** - **GPM and fps** are given for all indicated diameters. For example: - 3-inch diameter: 24.8 GPM, 2.26 fps - 6-inch diameter: 157 GPM, 3.57 fps 4. **1/2 in./ft Slope:** - **GPM and fps** values are shown. For example: - 3-inch diameter: 35.0 GPM, 3.20 fps - 6-inch diameter: 223 GPM, 5.05 fps *Note: "Half full" means the pipe is filled to a depth equal to half of the inside diameter.* **Source:** Courtesy of the National Standard Plumbing Code.
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