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Definition clarification for ventilation ducts
4.4(i)NI-wide·Amendments Booklet AMD 9 2025 (Booklets E R)
Ventilation ducts
ventilationAmendment (57): Cavity Plenum Requirements - Page 111
(57)NI-wide·Amendments Booklet AMD 9 2025 (Booklets E R)
Page 111 Delete paragraph 4.41(b)(vii) and substitute – "(vii) where the cavity is used as a plenum – the relevant recommendations of BS 9999 in relation to recirculating air distribution systems are
fire-safetyventilationSmoke control for firefighting shafts
Diagram 6.0, Note 2NI-wide·Amendments Booklet AMD 9 2025 (Booklets E R)
Smoke control should be provided in accordance with BS 9999 or, where the firefighting shaft only serves flats, the provisions for smoke control given in paragraph 2.34A may be followed instead.
fire-safetyventilationflatsKey design measures for emissions reduction and resilience
9.5.23Belfast·LDP Plan Strategy 2035 (adopted 2023)
Key design measures include: Shift towards zero carbon and a fabric first approach; The development of clean technologies and sustainable design; Best use of passive design, renewable energy, natural
energyventilationFabric first approach design methods
9.5.25Belfast·LDP Plan Strategy 2035 (adopted 2023)
Buildings designed and constructed using the fabric first approach aim to minimise the need for energy consumption through methods such as: Maximising air-tightness and using super-high insulation; an
energyventilationRoof Ventilation and Listed Building Consent
E6NI-wide·PPS 6 Planning Archaeology and the Built Heritage
The provision of roof ventilation will normally require listed building consent as it is likely to alter the appearance of the building. Where such work is proposed it should be undertaken without dis
public-buildingprotection-from-fallingventilationTrickle ventilation in historic windows
E18NI-wide·PPS 6 Planning Archaeology and the Built Heritage
In certain circumstances trickle ventilation will be a statutory requirement. There are a variety of ways to modify the designs of traditional windows to make this provision and there are ventilators
ventilationglazingconservationheritagelisted-buildingCeiling heights and natural light
3.1.80Belfast·SPG003 Residential Design
The perception of space in dwellings can be affected by ceiling heights within rooms, with higher ceilings appearing less restrictive. When combined with larger openings (such as windows or patio door
dwellingflatsventilationExternal storage area design and ventilation
3.2.16Belfast·SPG003 Residential Design
External storage areas should be away from windows and ventilators, not interfere with pedestrian or cycling routes and, preferably, be in shade or under shelter. Enclosures, compounds or storage room
dwellingflatstopic-wasteventilationDesign factors for energy-efficient residential extensions
4.5.6Belfast·SPG004 Residential Extensions and Alterations
Additional factors which may be considered in the development of extensions to existing dwellings include: • Orientation and glazing: orientation and the amount of glazing will determine how much sunl
dwellingenergyglazingventilationMechanical Ventilation and Heat Recovery (MVHR) System
Belfast·SPG004 Residential Extensions and Alterations
Mechanical ventilation and heat recovery (MVHR) system: MVHR extracts stale air from moisture producing rooms (e.g. kitchens, bathrooms etc.) and supplies fresh air to habitable rooms (e.g. living roo
dwellingventilationenergyOpenable windows for natural ventilation
4.2.7Belfast·SPG006 Tall Buildings
Consideration should be given to the use of openable windows in conjunction with energy efficiency and comfort levels to enable the circulation of fresh rather than conditioned air, which is especiall
ventilationenergyOdours from Cooking Processes
3.6.8Belfast·SPG012 Sensitive Uses
Odours produced primarily as a result of the cooking process in restaurants, cafés and hot food takeaways can have a negative impact on amenity of nearby sensitive premises if not adequately controlle
commercialnon-domesticventilationExtraction and Odour Abatement Systems Requirements
3.6.9Belfast·SPG012 Sensitive Uses
Restaurants, cafés and hot food takeaways must install appropriate extraction and odour abatement systems to effectively disperse and reduce odours. Details of the proposed extraction systems and any
commercialnon-domesticventilationCommercial Extraction Systems Standards
3.6.10Belfast·SPG012 Sensitive Uses
Commercial Extraction systems must: • have minimal impact on visual amenity, including location and external finish; • be acoustically attenuated where deemed necessary (usually informed by a noise im
commercialnon-domesticventilationsoundPlanning Application Requirements for Sensitive Uses
Appendix 7Belfast·SPG012 Sensitive Uses
Applications for restaurants, cafés, hot food takeaways, bookmaking offices, amusement centres, pubs and nightclubs will be required, where appropriate, to submit the following details: • 1:50 scale d
commercialsoundventilationdrainageglazingTesting to Demonstrate Workmanship Compliance
2.21NI-wide·Technical Booklet B Materials and Workmanship
Tests can be used to show that workmanship is appropriate. In the following two instances, the Building Regulations require those carrying out building work to have testing carried out to demonstrate
soundventilationTable of Contents - Section 8 Condensation
Section 8NI-wide·Technical Booklet C Site Preparation and Resistance to Contaminants and Moisture
Section 8 Condensation 38 Interstitial condensation 38
condensationventilationInterstitial condensation control in dwellings
0.9NI-wide·Technical Booklet C Site Preparation and Resistance to Contaminants and Moisture
It is the view of the Department that the requirements of regulation 29 will be met if the floors, walls and roofs of a dwelling are designed and constructed to protect the dwelling from harmful effec
dwellingventilationDesign and construction guidance to avoid interstitial condensation
0.10NI-wide·Technical Booklet C Site Preparation and Resistance to Contaminants and Moisture
The guidance in Section 8 is to ensure that interstitial condensation in a dwelling is avoided by following the design and construction guidance given in the specified BS and BRE technical documents.
dwellingventilationVentilated air space requirements for suspended timber floors
5.13(c)NI-wide·Technical Booklet C Site Preparation and Resistance to Contaminants and Moisture
with a ventilated air space measuring at least 75 mm from the ground cover to the underside of any wall plates and at least 150 mm to the underside of the suspended timber floor (or insulation if prov
dwellingnon-domesticventilationaccessprotection-from-fallingSuspended concrete ground floors - damp proof membrane and ventilation
5.16NI-wide·Technical Booklet C Site Preparation and Resistance to Contaminants and Moisture
A suspended concrete ground floor should meet the requirement to resist the passage of moisture from the ground if it incorporates (see Diagram 5.4) – (a) a damp proof membrane; and (b) where there is
drainageventilationVentilation pipes and grilles specification
5.16NI-wide·Technical Booklet C Site Preparation and Resistance to Contaminants and Moisture
Any pipes needed to carry ventilating air should have a diameter of at least 100 mm. Ventilation openings should incorporate suitable grilles which prevent the entry of vermin to the subfloor but do n
drainageventilationVentilated cavity for impermeable cladding
6.24NI-wide·Technical Booklet C Site Preparation and Resistance to Contaminants and Moisture
Where cladding is impermeable to water vapour there should be a ventilated cavity behind it.
external-spaceprotection-from-moistureventilationVentilation behind timber-supported cladding
6.29NI-wide·Technical Booklet C Site Preparation and Resistance to Contaminants and Moisture
Where cladding is supported by timber components or is on the façade of a timber framed building, the space between the cladding and the building should be ventilated to ensure rapid drying of any wat
claddingprotection-from-moistureventilationtimber-framedVentilation behind impermeable cladding
7.4NI-wide·Technical Booklet C Site Preparation and Resistance to Contaminants and Moisture
Where cladding is impermeable to water vapour there should be a ventilated air space behind the cladding.
moisture-protectionventilationDucted air circulation systems in dwellinghouses with storeys over 4.5 m
2.15NI-wide·Technical Booklet E Fire Safety
In a dwellinghouse with a storey more than 4.5 m above ground level, any system of ducted air circulation should – (a) not be fitted with transfer grilles between any room and a protected stairway; (b
dwellingfire-safetyhigh-riseventilationProtected lobbies and protected corridors
2.69NI-wide·Technical Booklet E Fire Safety
A protected lobby or protected corridor should be provided to every escape stairway on every storey in a building other than the top storey where – (a) the escape stairway is the only escape stairway
fire-safetymeans-of-escapestairsventilationMechanical ventilation systems under fire conditions
2.101NI-wide·Technical Booklet E Fire Safety
A mechanical ventilation system should be designed so that in a fire either – (a) the air movement in the building is directed away from escape routes; or (b) the system is closed down. Where the syst
fire-safetyventilationmeans-of-escapeCavity plenum recirculating air distribution systems
4.41(vii)NI-wide·Technical Booklet E Fire Safety
where the cavity is used as a plenum – the relevant recommendations of BS 9999 5588-9 in relation to recirculating air distribution systems are complied with.
fire-safetyventilationnon-domesticVentilation ducts penetrating fire separating elements
4.44NI-wide·Technical Booklet E Fire Safety
Where a ventilation or air conditioning duct passes through a fire separating element it should comply with an appropriate method for maintaining the fire resistance of the wall, floor or barrier give
fire-safetyventilationOpen-sided car parks definition and requirements
4.50NI-wide·Technical Booklet E Fire Safety
A car park may be regarded as an open-sided car park for the purposes of Table 4.2 [i.e. Purpose Group 7(b)(i)] where, in addition to complying with paragraph 4.49 – (a) it has no basement storeys; (b
commercialfire-safetyventilationnon-domesticVentilation for non-open-sided car parks
4.51NI-wide·Technical Booklet E Fire Safety
Where a car park does not comply with the provisions of paragraph 4.50 it should not be regarded as open-sided for the purposes of Table 4.2 [i.e. it falls in Purpose Group 7(b)(ii)]. However, there i
commercialfire-safetyventilationnon-domesticMechanical ventilation system for car parks in fire conditions
(b)NI-wide·Technical Booklet E Fire Safety
a system of mechanical ventilation where – (i) the system is independent of any other ventilation system and designed to operate at 6 air changes per hour for normal extraction and at 10 air changes p
fire-safetyventilationnon-domesticSmoke and heat venting from basements
6.11NI-wide·Technical Booklet E Fire Safety
The build-up of smoke and heat as a result of a fire can seriously inhibit the ability of the Fire and Rescue Service to carry out rescue and firefighting operations in a basement. The problem can be
fire-safetyventilationBasement venting facility requirements
6.12NI-wide·Technical Booklet E Fire Safety
Venting facilities, connected directly to the external air, should be provided from every basement storey other than – (a) a basement in a building of Purpose Group 1(b) or (c); (b) a basement storey
fire-safetyventilationNatural venting requirements for basement smoke outlets
6.14NI-wide·Technical Booklet E Fire Safety
A basement storey may be ventilated by smoke outlets which should – (a) be sited at ceiling level within the space they serve; (b) have an aggregate free area of not less than 2.5% of the floor area o
fire-safetymeans-of-escapeventilationSmoke outlet discharge and shaft construction
6.15NI-wide·Technical Booklet E Fire Safety
Smoke outlets may discharge by means of windows, stall-board risers or pavement lights which can be opened or knocked out provided such covers are readily accessible to the Fire and Rescue Service. Sh
fire-safetyventilationstructuralMechanical venting for basements with sprinklers and heat-resistant systems
6.16NI-wide·Technical Booklet E Fire Safety
A basement may be ventilated by a mechanical air extraction system provided – (a) the basement has a sprinkler system fitted in accordance with Section 8 complying with the relevant recommendations of
fire-safetyventilationService openings in walls and roofs
1.5, 1.6NI-wide·Technical Booklet F1 Conservation of Fuel and Power in Dwellings
An opening in a wall to accommodate building services, such as a waste pipe or ventilator, should be regarded as part of the wall and assumed to have the same U-value as the wall. An opening in a roo
energydwellingventilationTechnical risks and interrelated requirements
1.7, 1.8NI-wide·Technical Booklet F1 Conservation of Fuel and Power in Dwellings
Building work should satisfy all of the requirements of the Building Regulations, however the requirements of Part C (Site preparation and resistance to contaminants and moisture), Part G (Resistance
energydwellingventilationdrainageMaximum Air Permeability Requirements
2.47NI-wide·Technical Booklet F1 Conservation of Fuel and Power in Dwellings
The maximum permissible air permeability is 10 m3/(h.m2) at 50 Pa however, it is expected that dwellings will normally have an assessed air permeability of 5 m3/(h.m2) at 50 Pa or less. Where an air p
dwellingenergyventilationLimiting the Effects of Solar Gains - Design Measures
2.52NI-wide·Technical Booklet F1 Conservation of Fuel and Power in Dwellings
Provisions should be made to limit high internal temperatures due to excessive solar gains. This can be achieved by an appropriate combination of window size and orientation, solar protection through
dwellingenergyventilationCommissioning Procedures for Heating and Ventilation Systems
3.41NI-wide·Technical Booklet F1 Conservation of Fuel and Power in Dwellings
Where commissioning is carried out it should be done in accordance with the following procedures – (a) for heating and hot water systems the procedures given in the Domestic Building Services Complian
dwellingenergyventilationTechnical Risks When Modifying Thermal Elements
B3NI-wide·Technical Booklet F1 Conservation of Fuel and Power in Dwellings
When modifying a thermal element (such as insulating a roof space or filling the cavity in a wall) it is essential to consider the technical risks that may arise. For example, condensation is a major
dwellingenergyventilationprotection-from-fallingReferenced British Standards for Energy Performance
Appendix CNI-wide·Technical Booklet F1 Conservation of Fuel and Power in Dwellings
British Standards (BS) BS EN ISO 13370: 2007 Thermal performance of buildings. Heat transfer via the ground. Calculation methods. BS EN ISO 13788: 2002 Hygrothermal performance of building components
dwellingenergyventilationIndoor air quality and ventilation provisions
2.60NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
Consideration should be given to the provisions of Technical Booklet K and advice coming forward with respect to transmission of infection in order to ensure good indoor air quality. This is of increa
ventilationenergynon-domesticControls for Heating, Ventilation and Air Conditioning Systems
2.65NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
The following provisions should be made for heating, ventilation and air conditioning system controls – (a) the fixed building services system(s) should be subdivided into separate control zones to co
non-domesticenergyventilationDesign assessment for naturally ventilated buildings
2.69NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
If this criterion (given in the provisions in paragraph 2.70) is satisfied in the context of a naturally ventilated building, it is not evidence that the internal environment of the building will be s
non-domesticenergyventilationControlled Services - General Requirements
3.40NI-wide·Technical Booklet F2 Conservation of Fuel and Power in Buildings Other Than Dwellings
Where the work involves the provision, replacement or extension of a fixed building service the service should be provided and installed in accordance with the provisions and standards given in the No
non-domesticenergyventilation