Aquaknow Dec 13, 2010 Available on Global water website, these guidelines are on:Ferro-Cement Water Storage Tank – 5 Cubic Meter (5,000 Liters / 1,300 Gallons) PDF Hand Washing Stations (Lavamanos) – Single Side Configuration (Wall Style) with 8 faucets. PDFComplete Spring Catchment System – Spring Box PDFLatrines – Five Cabin LatrinePDFGray Water Seepage Pits PDF