- Project plans
- Project activities
- Legislation and standards
- Industry context
- Specialist wikis
Last edited 30 Aug 2021
Culvert, screen and outfall manual, (CIRIA C786) published by CIRIA in 2019, defines freeboard as: ‘An allowance for uncertainty in design water level and any other physical processes that may affect the ability of an asset to withstand the design water level such as wave action or superelevation.’
See also Residual uncertainty allowance.
Containment systems for the prevention of pollution, Secondary, tertiary and other measures for industrial and commercial premises (CIRIA C736), published by CIRIA in 2014 defines freeboard as: ‘An allowance in the form of increased height of a containment wall for additional capacity over and above the minimum design requirement.’
Rules of Thumb, Guidelines for building services (5th Edition) BG 9/2011, by Glenn Hawkins, published by BSRIA in 2011, defines freeboard as: ‘The vertical distance in a water tank between the maximum water level and the top of the tank’
 Related articles on Designing Buildings Wiki
Featured articles and news
PHribbon toolbar developed for US market.
CIOB consultation seeks feedback on APPG 2020 report.
How to respond to changes made in the October 2021 update.
Resource provides professional installation assistance.
Adaptive planning proposal spans 15 years.
Activities summarised by the Construction Industry Council.
How Islamic architecture shaped Europe. Book review.
The campaign to preserve a rare blacksmith bridge.
Transitional options for the next generation of heating technologies.