Blueprint: Gravity-Fed Drip Irrigation Kit (0.1 Hectare, Raised Tank) — Build Specification

DESIGN BLUEPRINT — SIMULATED, NOT MEASURED — NOT BUILT. Build specification drawn from the source paper: William Alexander Aldred, Gravity-Fed Drip Irrigation from a Raised Tank Without a Pump: A Low-Head Design for a 0.1 Hectare Plot, Its Water Budget and Its Uniformity Limits, DOI 10.5281/zenodo.24109017. A nominal 5,000 L tank whose base sits 2.00 m above the field feeds 20 laterals of 40 m in four zones of five laterals through 13.6 mm internal-diameter lateral pipe with plain orifice emitters every 0.40 m (2,000 emitters in total). The blueprint gives dimensions, materials with quantities (855 m of pipe in total), site preparation, assembly sequence, operating procedure, tolerances, failure modes and maintenance. At the design inlet head of 2.50 m the source paper gives a mean emitter discharge of 1.935 L/h, 98.84% emission uniformity on flat ground, and a four-zone delivery of 6,644 L/day in 1.72 hours per zone, with the tank refilled twice a day. Operating envelope from the source paper: emission uniformity holds at or above 85% up to an uphill slope of 2.4% at 40 m laterals (1.7% at a low tank) and up to 100 m lateral length on flat ground; it fails at a 2.5% uphill slope and at 105 m on the flat. Every performance figure is simulated, not measured; nothing has been built. Source paper DOI: 10.5281/zenodo.24109017.