Guide

Sprinkler System Design: From Plan to Pipe

A condensed, catalog-based method for laying out a sprinkler system – the same sequence our engineers use when quoting projects.

1-2 · Feasibility and site data

Collect the site basics before drawing anything: plot shape and slope, soil type and infiltration rate, local wind and rainfall, the crops or turf species, and the water source with its pressure and quality. Wind above force 3-4 distorts spray patterns – plan closer spacing or rotary nozzles there.

3 · Water source and storage

Balance the water budget: A = 100·μ·Q·T/Ia gives the daily irrigable area from available flow Q and daily run time T (μ ≈ 0.8-0.95). For storage tanks, size V = K·(Q1-Q2)·t with safety factor K of 1.1-1.2.

4 · Emitter choice by plant type

5 · Head layout rules

Space heads at 0.8-1.2 × throw radius R – head-to-head overlap is what makes coverage uniform. Use square or triangular layouts; triangular handles irregular plots and wind better. Remember head spacing is dictated by radius, never by pipe convenience.

6 · Installation practice

Set pop-up caps 0-10 mm below finished grade after turf establishment; keep heads at least 150 mm from hard edges. Install every head on a swing joint – it protects the lateral thread and makes final height adjustments trivial.

7 · Zoning and pipe layout

Split the site into rotation zones so each zone matches a valve flow range. Keep one emitter type per zone. Lay laterals along contours, avoid vacuum points on rolls, and choose tree-, herringbone- or ring-shaped mainline routing per the plan.