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D-408/2015a Post Emergency Pour Flush Institutional Latrine (Septic Tanks and Drainfield) Design and BoQ

This document contains documentation to help UNHCR and WASH actors build pour flush institutional latrines in refugee settings with septic tanks and drain fields. The package includes: Technical Drawings; Step by Step Construction Drawings; Bills of Quantity; Material and Workmanship Specifications; and Design Calculations.

F-402/2016a Drain Field Sizing Spreadsheet (UNHCR, 2016)

This sizing calculation tool has been designed to assist UNHCR and WASH actors correctly size drain fields for septic tanks in displaced settings taking into account numbers of users, soil type, and wastewater and sewage flows.