B.08 Att 8 WHO Fact Sheet 3.5.pdf

This document is a World Health Organization (WHO) Fact Sheet 3.5 providing detailed technical guidance on Ventilated Improved Pit (VIP) and Reed's Odourless Earth Closer (ROEC) latrines, specifically focusing on their design, construction, and maintenance principles.

The fact sheet comprehensively covers latrine construction requirements, including precise specifications for pit dimensions, location selection, base/foundation construction, floor/slab design, vent pipe characteristics, and shelter configuration. Key technical details include recommendations for pit depth (at least 1.5 meters), pit volume calculations (0.06 cubic meters per person per year), placement criteria (downhill from water sources, downwind of buildings, away from trees), and critical operational guidelines such as daily cleaning, maintaining air circulation, preventing fly breeding, and managing pit contents. The document provides step-by-step illustrated instructions for constructing concrete slabs, positioning vent pipes, and creating shelters, with an emphasis on hygiene, odor control, and disease prevention.