This document contains design drawings for a 15m high 109m3 elevated water tower constructed from pressed steel.
This document contains design drawings for 20m3, 25m3, 50m,3 60m3 and 75m3 reinforced concrete elevated Water Tanks sitting on top of a 6m reinforced concrete tower.
This document contains materials to help UNHCR and WASH actors construct emergency raised water platforms in refugee settings. The package includes: Technical Drawings; Step by Step Construction Drawings; Bills of Quantity; Material and Workmanship Specifications; and Design Calculations.
This document contains a simplified design to help UNHCR and WASH actors design drilled boreholes (alluvial aquifer) in refugee settings. The package includes: Technical Drawings; Step by Step Construction Drawings; Bills of Quantity; Material and Workmanship Specifications; and Design Calculations.
This document contains a simplified design to help UNHCR and WASH actors design drilled boreholes (fractured rock) in refugee settings. The package includes: Technical Drawings; Step by Step Construction Drawings; Bills of Quantity; Material and Workmanship Specifications; and Design Calculations.
This is the standard UNHCR well cleaning and chlorination template for refugee settings available in PDF and MSExcel formats. The form should be completed each time a hand dug well is cleaned, chlorinated and tested for faecal coliforms. The form is available in MSExcel format so WASH actors can adapt the content to the context.
This is the standard UNHCR borehole drilling contract template for refugee settings available in PDF and MSWord formats. The contract also includes a technical specification for drilling which defines the following borehole construction requirements: drillpipe diameters; casings and screens; hydrogeological survey; identification of drilling sites; abandoned boreholes; drilling equipment and depths; plumbness and alignment; temporary lid; artificial and natural gravel pack; well development; sanitary seal; pumping tests; borehole yields; borehole pollution; borehole disinfection; and water samples.
This document provides a quick summary of the most important WASH related diseases for refugee settings and includes a list of recommended control strategies.
The Sphere Handbook is one of the most widely known and internationally recognized sets of common principles and universal minimum standards for the delivery of quality humanitarian response.
Pumping tests are a practical way of obtaining an idea of the borehole’s efficiency and its optimal production yield. Much of the specialized knowledge and technical expertise needed for this purpose can be gained from the standard literature. However, field operations in remote areas or in difficult conditions often require flexibility and imagination in avoiding or solving technical problems. These guidelines are intended mainly as a practical tool and
therefore contain a minimum of theory. They are aimed at water and habitat engineers working in the field who are undertaking or supervising borehole drilling or rehabilitation
programmes and are not conversant with pumping test procedures.
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