| Budget Amount *help |
¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
Fiscal Year 2015: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2014: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2013: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000)
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| Outline of Final Research Achievements |
The following matters have been clarified, which contribute to planning and designing a piping system for a building drainage system with a water-saving toilet installed thereto, in terms of ensuring hygiene and safety. ① The prediction of carrying distances of waste, toilet paper, etc., in relation to the decline of carrying performance in the horizontal drainpipe, followed by the development of a simulation tool conducive to piping design support. ② The experimental evaluation of how a piping system affects the drainage performance of a drainage stack system, followed by the clarification of applicability of a water-saving toilet to the piping system. ③ The clarification of how the speed of external wind in the stack vent pipe (vent cap) and ventilation facilities affect the trap of the water-saving toilet.
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