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
5 results · filtered
Discharge pipes from tundishes - General requirements
2.14NI-wide·Technical Booklet P Sanitary Appliances Unvented Hot Water Storage and Scalding
A discharge pipe from a tundish should – (a) be made of – (i) metal; or (ii) other material that has been demonstrated to be capable of safely withstanding the temperatures of the water discharged and
drainagescaldingunvented-hot-water-storageHydraulic resistance calculation for discharge pipes
2.15NI-wide·Technical Booklet P Sanitary Appliances Unvented Hot Water Storage and Scalding
In calculating the hydraulic resistance of a discharge pipe the resistance of straight lengths, elbows and bends should be taken into account. If a discharge pipe is of copper its size should be calcu
drainagescaldingunvented-hot-water-storageVisibility of discharge from safety devices
2.16NI-wide·Technical Booklet P Sanitary Appliances Unvented Hot Water Storage and Scalding
The discharge from a safety device which may consist of scalding water and steam, should be visible at the tundish and should also be visible at the final point of discharge.
drainagescaldingunvented-hot-water-storageAcceptable discharge arrangements
2.17NI-wide·Technical Booklet P Sanitary Appliances Unvented Hot Water Storage and Scalding
Acceptable discharge arrangements include – (a) below a fixed louvred grating and above the water seal in a trapped gulley (see Diagram 2.1); or (b) downward discharge at low level but no less than 10
drainagescaldingunvented-hot-water-storageexternal-spaceRelevant British Standards for Unvented Hot Water Storage and Sanitary Appliances
Appendix Publications referred toNI-wide·Technical Booklet P Sanitary Appliances Unvented Hot Water Storage and Scalding
BS EN 257: 2010 Mechanical thermostats for gas-burning appliances. BS EN 1111: 1999 Sanitary tapware. Thermostatic mixing valves (PN 10). General technical specification. BS EN 1287: 1999 Sanitary tap
dwellingnon-domesticsanitary-appliancesunvented-hot-water-storagescalding-prevention