Skip to content


Visit CIBSE's online learning portal at

Key Areas
Course content
Learning outcomes
Who should attend
How to book
Course fees

Key Areas

This module deals with the pipework installation within a building that carries away waste water from sanitary fittings including WCs, wash basins, showers, sinks and floor gullies. This is known as Sanitary Pipework. Once this pipework goes below ground, it is termed “Drainage”. This course deals only with Sanitary Pipework – ie that  above ground. 

This module is also concerned only with Sanitary Pipework Systems that operate by gravity. There are vacuum systems and pumped systems but these have very particular requirements and make up only a very small fraction of Sanitary Pipework Systems in buildings. Specialist sanitary installations serving laboratories, commercial kitchens or industrial processes are also excluded from this module. 

The design of Sanitary Pipework Systems is complex as it must handle liquids, solids and gases simultaneously and must be capable of dealing with widely fluctuating loads that are difficult to quantify. Furthermore, it connects the inside of our buildings directly with the sewers and conveys substances that are hazardous to health. As a result, the design, installation, testing and maintenance of Sanitary Pipework Installations are heavily regulated in most countries and must comply with a myriad of Regulations and Standards. The Public Health Engineer needs to understand the principles that form the basis of these standards and regulations both to ensure compliance and also because there will be situations where standards are not applicable. It must also be remembered that regulations and standards set down the minimum requirements and some building projects will demand that these be exceeded. 

Course content 

  • General Design Principles
  • Traps
  • Types of pipework systems
  • Terminology

 Regulations and Standards

  • UK Regulations
  • European Standards
  • Other codes of practice
Design Flow Rates
  • Sanitary discharge rates
  • Diversity
  • Discharge Units
 Type III (UK) Systems
  • Ventilation pipework design
  • Discharge stack design
  • Discharge branch design
  • Performance tests
  • Pressure tests
  • Materials used for pipework and fittings
  • Prevention of fire spread
  • Noise attenuation

Learning outcomes 

  • Principles of Design

  • Performance Requirements

  • UK Regulations and Standards

  • Types of System

  • Determining design flow rates

  • Sizing and layout of Pipework

  • Location of pipework

  • Materials

  • Testing

  • Fire precautions

  • Limiting noise

Who should attend

CIBSE online learning courses are suitable for those wishing to enhance and support their current knowledge base, as well as graduates within an engineering discipline. 

Each unit has been peer reviewed and tested through this group. The units allow students to take a coordinated journey through an individual topic or a series of topics. The units form the backbone of several corporate training schemes.

How to book 

Visit CIBSE's new online learning portal at

Course fees 

£300 (£360 inc vat)

Corporate subscribers, please contact Charlotte Stubbs