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| Q. |
What is the recommended slope ratio for soil water pipes? |
| A. | 1:12 |
| B. | 1:20 |
| C. | 1:30 |
| D. | 1:40 |
| Answer» D. 1:40 | |
| Explanation: soil water pipes should run at a steeper slope, such as 1:40, as they have solids. these can be of cast iron or of pvc. minimum of 100 mm diameter pipes are used for waste water. | |
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