The contribution of unroofed superstructure to the filling rate of the pit latrines? (question from Tanzania)

  • blevira
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The contribution of unroofed superstructure to the filling rate of the pit latrine

Greetings!
I am during a study here in Dar es Salaam, Tanzania looking at the unroofed pit latrines vs the pit filling rate, especially in wet seasons.
Any contributions, thoughts or papers that you have come across regarding the topic?

Thanks!









Beda Modest Levira
Environmental engineer and researcher
Ifakara Health Institute (IHI)
Tanzania, East Africa
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Working as the project leader for 2 projects 1) HDIF (DFID) and 2) LIRA 2030 here in Dar es Salaam, Tanzania
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  • muench
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Re: The contribution of unroofed superstructure to the filling rate of the pit latrine

Dear Beda,

Thanks for your interesting question and the photos of pretty dodgy looking toilets... Were they built without a roof from the start or did they lose their roof over time?
I am guessing the filling rate might be influenced by rain events if:
- you have very high rainfall
- the floor slopes towards the drop hole and it doesn's have a raised rim
- the ground conditions are such that water is not infiltrating into the soil well

Is this the case in your situations? Have you found any publications through the usual means yet (like Google Scholar and alike)? If so, please do report back, as it would be interesting to know what you found. :-)

Regards,
Elisabeth

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