Interpreting plumbing drawings

Introduction

Having a plan is essential when going into a job. Understanding what fixtures are required and the location for them is important in delivering what the customer wants. This ebook will take you through some of the fundamentals examples of plans and the symbols used in design.

Plumbing Symbols Graphical

Plumbing Symbols

There are lots of symbols used to describe the different types of fittings and function of plumbing diagrams. When viewing a diagram look for the Legend or Key that describes the symbol. Take note of the colour of lines and the direction of flow.

Plumbing Floor Plan Example

Study this diagram before drawing your own house plan with plumbing lines.

Sectional Drawing

 A 'section drawing', 'section' or 'sectional drawing' shows a view of a structure as though it had been sliced in half or cut along an imaginary plane.

Section drawing - Sample exam question

This is an example question from the 2016 NZ Plumbing Registration exam.

Diagram example - exam question