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Building Drainage Explained

Key areas
Course content
Learning outcomes
Who should attend
Course timings
Upcoming courses

Key Areas

  • Generic drainage technology
  • Wastewater design criteria
  • Pumped Basement drainage considerations and anti-flood measures
  • Surface water design criteria
  • SUDS techniques
  • Alternative drain pipe materials

Course Content 

A general introduction to below ground building drainage systems, covering the key features of typical drainage systems, explaining practical applications, and including some drain sizing examples.

Session 1 

  • Introduction
  • General Principles and terminology
  • Use of gradients and flow data 
  • Drain bedding and protection techniques
  • Access systems and regulations

Session 2 

  • Foul Water drainage systems
  • Design criteria
  • Gullies 
  • Grease interceptors
  • Ventilation
  • Wastewater drainage design example

Session 3 

  • Surface water drainage systems
  • Design criteria
  • Gullies and channel drains
  • SUDS techniques
  • Filters for rain harvesting systems 
  • Surface Water drainage design example

Session 4

  • Petrol interceptors
  • Basement pumping and anti-flood arrangements
  • Inspection and testing methods
  • Considerations affecting selection of materials

Learning Outcomes

  • Define typical drainage terminology
  • Manipulate drainage gradient information
  • Describe the basic principles of drainage bedding
  • Explain the alternative access provisions
  • Determine wastewater design flows
  • Explain Basement pumping and anti-flooding considerations
  • Describe the alternative grease prevention measures
  • Determine surface water design flows
  • Describe the three main SUDS techniques
  • Name the three main types of petrol interceptors
  • Explain the benefits and disadvantages of typical alternative drain pipe materials
  • Describe the main inspection and testing methods

Who Should Attend 

This course is designed for people with limited knowledge of  below ground drainage systems who require a general  overview of the whole subject covering the features that may be encountered in a typical building drainage scheme.

Course Timings

Registration and coffee will be at 09.30
Course will start at 10.00 and finish at 4.30


Members Rate: £336 (£280 ex VAT)

Standard Rate: £372 (£310 ex VAT)


Upcoming courses

9th May - Building Drainage Explained - A1606 - London

In-house training at your site

Training multiple staff at once is the most cost effective way to develop staff for organisations. All our courses can be delivered at your site (min 6 staff) at discounted rates. These In-House courses are only available in the UK and Europe. For an In-house quote please email; 
Name of course, approximate number of staff and your site address 


To contact the CIBSE Training Team with a query please

Email: or call: +44 (0)20 8772 3637