Proceedings of the Sanitary Convention
This tank discharges, its contents as often as it is filled, but it is believed once in 24 hours is sufficient. The system has man-holes distributed on the mains. No surface or roof water is permitted to enter the sewers. The house drains are all 4 inches in diameter, and no trap is permitted on the main drain, each fixture being provided with a separate trap. The soil pipes are of cast iron, 4 inches in diameter , with lead joints above the ground, and extend 4 inches in diameter above the roofs.
| Title | : | Proceedings of the Sanitary Convention |
| Author | : | Michigan. State Board of Health |
| Publisher | : | - 1886-11-18 |
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