Appliance ventilation duct
Approved document B, Fire Safety, Volume 2, Buildings other than dwellinghouses (2019 edition), defines an appliance ventilation duct as:
'A duct to deliver combustion air to a gas appliance.'
Where an appliance ventilation duct passes through a compartment wall or compartment floor, or is built into a compartment wall, each wall of the duct should have a fire resistance of at lease half the wall or floor in order to prevent the by-passing of the compartmentation.
[edit] Related articles on Designing Buildings Wiki
Featured articles
Check out some of the best features and news from Designing Buildings as well as key stories from around the web.
The cost of employing people remains a concern.
Code of Practice for Electrical Energy Storage Systems.
ECA calls on members to comment on draft 4th edition.
Bringing together expertise and creating cultural benefits.
CIOB celebrates positive Ofsted report.
The Building Safety Regulator announces a call for evidence.
Government approach could undermine delivery and regeneration.
World's first mass timber data centre.
The overlooked environmental aspect of data centre development.
Introduction to radon awareness
New technical information sheet published by CIOB.
Updated supplier guide can help electrical contractors engage with NHP.
CIAT confirm the winners of the 2026 architectural technology awards.
Government launches a one stop shop for flood preparedness.
Sir Edwin Lutyens: Britain's greatest architect? Book review.