Every rule your project must meet, found for you.
Search Northern Ireland’s planning and building-control guidance, ask a question in plain English, or generate a project compliance checklist — every answer cited to the source.
Working to a specific project? Generate a compliance checklist →
Answers, with citations
Ask in plain English and get an answer that links to the exact source clause — never an unsourced guess.
Scoped to your council
Overlay a council's local development plan on the Northern Ireland-wide regulations and policy.
Project compliance checklist
Characterise a project and get the requirements that apply, grouped by work area. Try it →
The library
Search the source guidance
2 results · filtered
Extract fan rate limits for gas appliances with open-flued combustion
2.17(a)NI-wide·Technical Booklet L Combustion Appliances and Fuel Storage Systems
for a gas appliance – where a room contains an open-flued appliance, the room extract fan rate should not exceed 20 litres/second (72 m3/hour), and a spillage test as recommended in BS 5440: 1 should
gas-applianceopen-fluedventilationfire-safetySpecialist advice for commercial and industrial installations with combustion appliances
2.17(d)NI-wide·Technical Booklet L Combustion Appliances and Fuel Storage Systems
for commercial and industrial installations – specialist advice from a mechanical/services engineer may be necessary with regard to the possible need for the interlocking of gas heaters and any mechan
commercialindustrialgas-applianceventilation