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
3 results · filtered
Junctions with internal timber floors
2.45NI-wide·Technical Booklet G Resistance to the Passage of Sound
If the floor joists are to be supported on a type 1 separating wall then they should be supported on hangers and should not be built in (see Diagram 2.10).
soundtimberseparating-wallinternal-floorJunctions with internal concrete floors
2.46, 2.47NI-wide·Technical Booklet G Resistance to the Passage of Sound
An internal concrete floor slab may only be carried through a type 1 separating wall if the floor base has a mass per unit area of at least 365 kg/m² (see Diagram 2.11). Internal hollow-core concrete
soundconcreteseparating-wallinternal-floorConcrete beam floors with infilling blocks
2.48NI-wide·Technical Booklet G Resistance to the Passage of Sound
For internal floors of concrete beams with infilling blocks, beams built in to the separating wall should be avoided unless the blocks in the floor fill the space between the beams where they penetrat
soundconcreteseparating-wallinternal-floor