General
1.0.1 In order to implement the national technical and economic policies, promote sustainable development, standardize the basic functions and performance requirements of residential, according to the relevant laws and regulations, the formulation of this specification.
1.0.2 This specification applies to the construction, use and maintenance of urban housing.
1.0.3 Residential construction should be adapted to local conditions, saving resources, protecting the environment, applicable, economical, beautiful, energy-saving, land-saving, water-saving, material-saving requirements.
1.0.4 The provisions of this specification are the basic requirements for residential. When in conflict with the provisions of laws and administrative regulations, they shall be implemented in accordance with the provisions of laws and administrative regulations.
1.0.5 The construction, use and maintenance of dwellings shall be in accordance with the provisions of the relevant standards approved or recorded by the state.
2 terminology
2.0.1 residential buildingresidential building
For the family residential use of the building (including other functional space in the same building with the residential part), referred to as residential.
2.0.2 house for the aged
For the elderly as the core of the family residential use of specialized housing. Elderly housing to sets of units, ordinary residential buildings can be set up in a number of elderly housing.
2.0.3 residential building unit residential building unit
Building part of a number of dwellings, the part of the household can be evacuated through the *** with stairs and safety exits.
2. 0. 4 set dwelling space
Basic residential unit consisting of usable area, living space.
2.0.5 barrier-free passage
Transportation facilities suitable for the elderly, infirm, disabled, wheelchairs, and strollers, etc., on roads, green spaces, and public ****services, etc., outside the dwelling.
2.0.6 green space green space
The general term for all forms of green space within the residential land such as public **** green space, green space next to the house, green space belonging to public **** service facilities and green space on the road (i.e., green space within the red line of the road), including green space on the rooftop of the underground or semi-underground building that meets the requirements of local tree planting and greening, and that facilitates the residents' access to the rooftops of the buildings, excluding other rooftops, sundecks, green space on the vertices, and green space on the vertical roofs, and green space on the sun decks.
2.0.7 public **** green space publicgreenspace
Satisfy the requirements of sunshine, suitable for the arrangement of recreational facilities for residents **** enjoy the concentration of green space.
2.0.8greeningrate
The ratio of the total area of various types of green space to the area of residential land (%).
2.0.9entrance platformentranceplatform
The horizontal ground between the steps or ramps and the building population.
2.0.10 accessible housingbarrier-freeresidence
A residential suite in a residential building that is accessible to and usable by persons in wheelchairs.
2.0.11 wheelchair ramp rampforwheelchair
Slope, width and floor, handrail, height, etc. in line with the requirements of wheelchair access ramp.
2.0.12 basementbasement
Room floor is lower than the height of the outdoor ground level more than 1/2 of the net height of the room.
2.0.13 semi-basement semi-basement
Room floor below the outdoor ground level of the height of more than 1/3 of the net height of the room, and does not exceed 1/2.
2.0.14 design working life designworkinglife
Designed to provide the structure or structural elements do not need to carry out major repairs can be used in accordance with its intended purpose of the period.
2.0.15 actionaction
The cause of internal forces and deformation effects in a structure or structural member.
2.0.16 non-structural element non-structuralelement
Building elements connected to the building structure, electromechanical components and their systems.
3 basic provisions
3.1 basic residential requirements
3.1.1 residential construction should be in line with the requirements of urban planning, to ensure that the residents of the basic living conditions and the environment, economic, reasonable and effective use of land and space.
3.1.2 The adverse effects of noise, hazardous substances, electromagnetic radiation and engineering geological disasters, hydrogeological disasters and other adverse effects shall be taken into consideration when selecting residential sites.
3.1.3 Residential shall have public **** service facilities, roads and public **** green space appropriate to the size of its residential population.
3.1.4 Dwellings should be designed in accordance with the type of set, set of space and facilities should be able to meet the safety, comfort, health and other basic requirements for living and living.
3.1.5 residential structure must be sufficiently reliable within the specified design life.
3.1.6 residential fire safety performance.
3.1.7 The dwelling shall have the capability of safe evacuation of persons from the building in case of emergency.
3.1.8 dwellings should meet the human health requirements of ventilation, sunlight, natural lighting and sound insulation.
3.1.9 Residential construction materials should be selected to avoid environmental pollution.
3.1.10 homes must be energy-saving design, and homes and their indoor equipment should be able to effectively use energy and water resources.
3.1.11 Residential construction shall comply with the principle of barrier-free design.
3.1.12 residential shall take measures to prevent the falling of window panes, exterior wall decorations and other appurtenances and other falling or falling injuries.
3.2 licensing principles
3.2.1 residential construction must use materials and equipment of qualified quality and meet the requirements.
3.2.2 When residential construction using new technologies, new techniques, new materials do not meet the mandatory standards for engineering construction, must be approved by the relevant procedures.
3.2.3 without technical appraisal and design approval, shall not demolish the structural components and carry out additional transformation.
3.3 Existing Dwellings
3.3.1 When an existing dwelling reaches its designed service life or suffers a major disaster and needs to continue to be used, it should be entrusted to an organization with the appropriate qualifications for appraisal, and be dealt with in accordance with the appraisal conclusions.
3.3.2 Existing residential remodeling, reconstruction, should take into account the requirements of energy conservation, fire prevention, seismic requirements.
4 external environment
4.1 adjacency
4.1.1 residential spacing, should be based on meeting the sunlight requirements, taking into account the light, ventilation, fire, disaster prevention, pipeline burial, visual hygiene and other requirements to determine. Residential sunlight standards should be consistent with the provisions of Table 4.1.1; for specific cases should also be consistent with the following provisions:
1 elderly homes should not be lower than the winter solstice sunshine 2h standard;
2 old areas of the project can be reduced as appropriate within the project of the sunshine standard for new homes, but should not be lower than the standard of the cold day sunshine 1h.
Table 4.1.1 residential building daylight standards
Building climate zones Ⅰ, Ⅱ, Ⅲ, Ⅶ climate zone Ⅳ climate zone Ⅴ, Ⅵ
Climate zones
Major cities, small and medium-sized cities, large and medium-sized cities, small and medium-sized cities
Sunshine standard day of the day of the big cold winter solstice
Sunshine hours (hours) ≥ 2 ≥ 3 ≥ 1
Effective Sunshine time band
(local true solar time)8~169~15
Calculation of the starting point of the ground floor sill surface
Note: 1 the ground floor sill surface refers to the location of the exterior wall from the indoor floor height of 0.9m;
4.1.2 the minimum distance from the dwelling to the edge of the road should be in line with the provisions of Table 4.1.2.
Table 4.1.2 minimum distance from the residence to the edge of the road (m)
Road width
Distance from the residence 9m
Residence facing the road without entrance and exit of the high-level 235
Multi-storey 233
With entrance and exit of 2.55-
Residence hill wall facing the road High-rise 1.524
Multi-story 1.522
Note: 1 When the road has a sidewalk, the edge of the road refers to the side line of the sidewalk.
2The "-" indicates that dwellings should not have entrances or exits to roads with a road width greater than 9m.
4.1.3 All kinds of pipelines installed around the residence should not affect the safety of the residence, and should be prevented from corrosion, subsidence, vibration and heavy pressure on the pipeline.
4.2 public **** service facilities
4.2.1 supporting public **** service facilities (supporting public buildings) should include: education, health care, culture, sports, commercial services, financial services, post and telecommunications, community services, municipal utilities and administration and other 9 types of facilities.
4.2.2 supporting public projects and scale, must correspond to the size of the residential population, and should be synchronized with the residential planning, construction, delivery at the same time.
4.3 road traffic
4.3.1 each residential unit should have at least one entrance and exit can be accessible to motor vehicles.
4.3.2 Roads should be set up in accordance with the following provisions:
1 The road width of the two-lane road should not be less than 6m; the road width of the road in front of the house should not be less than 2.5m;
2 When the length of the end-type road is more than 120m, a return site of not less than 12m×12m should be set up at the end;
3 When the main road has a large slope, a buffer section should be set up with the city. When the slope of the main road is large, a buffer section should be set up to connect with the city road;
4 In the earthquake-proof area, the road traffic should consider the requirements of disaster mitigation and relief.
4.3.3 barrier-free access should be through, and shall comply with the following provisions:
1 slope of the ramp should be consistent with the provisions of Table 4.3.3.
Table 4.1.3 slope of the ramp
Height (m) 1.501.000.75
Slope ≤ 1:20 ≤ 1:16 ≤ 1:12
2 sidewalks at the crossroads, neighborhood intersections, plaza entrances should be equipped with curb ramps, the slope should be flat, and should not be smooth. Slope should be less than 1:20, the slope width should be greater than 1.2m.
3 Passage of wheelchair bikes ramp width should not be less than 1.5m.
4.3.4 Residential land should be equipped with residents of bicycles, automobiles, parking lots or parking garages.
4.4 Outdoor Environment
4.4.1 The green space rate of the new area shall not be less than 30%.
4. 4. 4. 2 The total indicator of public **** green space should not be less than 1m2/person.
4. 4. 4. 3 artificial landscape water body of supplementary water is strictly prohibited to use tap water. No guardrail water body within 2m of the near shore and garden bridge, Tingbu near the 2m range, the depth of water should not be greater than 0.5m.
4.4.4 Noise affected by the noise of the residential perimeter should be taken to prevent noise measures.
4.5 vertical
4.5.1 ground water drainage system, should be designed according to topographic characteristics, ground drainage slope should not be less than 0.2%.
4.5.2 Protective works of residential land shall be set up in accordance with the following provisions:
1 The steps of terrace land shall be connected by berms or retaining walls, and when the difference in height between neighboring terraces is more than 1.5m, safety protection facilities shall be added on the top surface of retaining walls or berms whose slope ratio is more than 0.5;
2 The slope ratio of soil berms shall not be more than 0.5;
3 height greater than 2m retaining wall and the upper edge of the berm and the horizontal distance between the residence should not be less than 3m, and its lower edge and the horizontal distance between the residence should not be less than 2m.
5 Architecture
5.1 set of space
5.1.1 each set of residential should be provided with bedrooms, living rooms (halls), kitchens and bathrooms, and other basic spaces.
5.1.2 kitchen should be equipped with a stove, sink, counter, exhaust hood and other facilities or reserved space.
5.1.3 bathroom should not be directly arranged in the lower floor of the bedroom, living room (hall), kitchen, dining room on the upper floor. Bathroom floor and local walls should be waterproof construction.
5.1.4 bathroom should be set up commode, washbasin, washbasin and other facilities or reserved space; arrangement of commode bathroom door should not open directly in the kitchen.
5.1.5 external window sill from the floor, the floor of the net height of less than 0.90m, there should be protective facilities. Six floors and six floors below the net height of the balcony railing should not be less than 1.05m, seven floors and seven floors above the net height of the balcony railing should not be less than 1.10m. balcony railing should be protective measures. The net distance between the vertical bars of the protective railing should not be greater than O.11m.
5.1.6 Bedroom, living room (hall) of the net height of the indoor should not be less than 2.40m, the net height of the local should not be less than 2.10m, the net height of the local should not be greater than the indoor use of the area of 1/3 of the space within the use of sloping roofs as bedrooms, living room (hall), 1/2 of the use of the area of the indoor should not be less than 2.10m.
5.1.7 Bedrooms and living room (hall) should be less than 2.40m, the net height of the indoor should not be less than 2.10m. Less than 2.10m.
5.1.7 balcony floor construction should be drainage measures.
5.2 public *** part
5.2.1 corridors and public *** part of the passageway net width should not be less than 1.20m, the local net height should not be less than 2.OOm.
5.2.2 corridors, inner patio and the roof of the people on the airspace such as the net height of the balustrade, the sixth floor and six floors should not be less than 1.05m; seven floors and seven floors should not be less than 1.10m. m. Railing should prevent climbing, vertical bars between the net distance should not be greater than 0.11m.
5.2.3 stairway section net width should not be less than 1.10m. six and six floors of residential, one side of the stairway section with a balustrade net width should not be less than 1.OOOm. stairway tread width should not be less than 0.26m, the height of the tread should not be greater than 0.175m. handrail height should not be less than 0.90m. Staircase horizontal section railing length greater than 0.50m, the handrail height should not be less than 1.05m. Staircase railing vertical bars should not be greater than 0.11m. Stairwell width greater than O.11m, must be taken to prevent children from climbing and slipping measures.
5.2.4 residential and attached public **** with the entrance should be arranged separately. Residential public * * * entrances and exits are located in the balcony, corridor and open staircase platform of the lower part of the safety measures should be taken to prevent objects from falling hurt.
5.2.5 seven floors and more than seven floors of residential or residential entrance floor from the outdoor design of the ground height of more than 16m above the residential elevator must be set.
5.2.6 residential buildings with management personnel room, there should be managers to use the bathroom.
5.3 accessibility requirements
5.3.1 seven and more than seven floors of the residential, should be the following parts of the barrier-free design:
1 building entrance;
2 entrance platform;
3 waiting room;
4 public **** aisle;
5 barrier-free housing.
5.3.2 The barrier-free design of building entrances and entrance platforms shall comply with the following provisions:
1 When steps are provided at building entrances, wheelchair ramps and handrails shall be provided;
2 The gradient of ramps shall be in accordance with the provisions of Table 5.3.2;
Table 5.3.2 Gradient of Ramps
Height (m) 1.501. 000.750.600.35
Slope 1:201:161:121:101:8
3 The net width of the door for wheelchair access shall not be less than 0.80m;
4 The sliding and flat doors for wheelchair access shall be provided with a wall width of not less than 0.50m in the wall on the handle side of the door;
5 The door for wheelchair The door for wheelchair access should be installed with sight observation glass, horizontal handle and closing handle, and a door guard plate of O.35m should be installed under the door;
6The height of the threshold and the difference in height between the floor inside and outside of the door should not be more than 15mm and should be transitioned with a slope.
5.3.3 seven and more than seven residential building entrance platform width should not be less than 2.OOm.
5.3.4 for wheelchair access to the aisle and passageway width should not be less than 1.20m.
5.4 basement
5.4.1 residential bedrooms, living rooms (halls), kitchens should not be arranged in the basement. When arranged in the semi-basement, must take lighting, ventilation, sunlight, moisture, drainage and safety measures.
5.4.2 residential underground motor vehicle garage should comply with the following provisions:
1 library ramp is strictly prohibited will be a wide single lane double lane.
2 The garage shall not be equipped with repair spaces and shall not be equipped with rooms for the use or storage of flammable or explosive substances.
3 library driveway height should not be less than 2.20m. parking space height should not be less than 2.OOm.
4 library through the residential units of the building (electric) stairwell should be set up, it is strictly prohibited to use the building (electric) stairwell for natural ventilation.
5.4.3 residential underground bicycle storage net height should not be less than 2.OOm.
5.4.4 residential basement should take effective waterproofing measures.
6 structure
6.1 general provisions
6.1.1 residential structure design life should not be less than 50 years, and its safety level should not be less than two.
6.1.2 seismic intensity of 6 degrees and above, the residential structure must be seismic design, the seismic category should not be less than category C. The seismic design of the residential structure should not be less than 50 years.
6.1.3 residential structural design should obtain qualified geotechnical engineering investigation documents. For unfavorable lots, avoidance requirements or effective measures shall be put forward; it is strictly prohibited to construct residential buildings in seismic hazardous lots.
6.1.4 Residential structures should be able to withstand the various effects and environmental impacts that may occur during normal construction and normal use. Within the design service life of the structure, residential structures and structural components must meet the requirements of safety, suitability and durability.
6.1.5 Residential structures shall not have cracks that affect structural safety.
6.1.6 The design life of permanent slopes adjacent to a dwelling shall not be less than the design life of the dwelling structure affected by them.
6.2 Materials
6.2.1 The materials of the residential structure shall have the specified physical and mechanical properties and durability, and shall be in accordance with the principles of resource conservation and environmental protection.
6.2.2 The standard value of the strength of residential structural materials should have a guarantee rate of not less than 95%; seismic areas of residential, structural steel should meet the requirements of seismic performance.
6.2.3 residential structure with the strength of concrete should not be less than C20.
6.2.4 residential structure with the steel should have tensile strength, yield strength, elongation and sulfur, phosphorus content of the qualified assurance; welded steel structure with the steel, but also should have the carbon content, cold bending test of the qualified assurance.
6.2.5 The strength of load-bearing masonry materials in the residential structure shall comply with the following provisions:
1 The strength grade of sintered common brick, sintered porous brick, autoclaved gray sand brick, autoclaved fly ash brick shall not be less than MU10;
2 The strength grade of concrete block shall not be less than MU7.5;
3 The strength grade of mortar of the brick masonry, the seismic design shall not be less than M5; for non-seismic design, it shall not be less than M2.5 for dwellings of less than five storeys, and for dwellings of not less than five storeys;
4The strength class of mortar for brick masonry shall not be less than Mb7.5 for seismic design or less than Mb5 for non-seismic design.
6. 2. 6In wood-framed dwellings, the strength class of load-bearing timber shall not be less than TC11 (coniferous species) or TB11 (broadleaf species), and its design index should take into account the adverse effect of moisture content; the gluing strength of the glue used for load-bearing structure should not be lower than the shear strength of the wood in the smooth grain and the tensile strength of the cross grain.
6.3 Foundation
6.3.1 Residence should be based on geotechnical engineering investigation documents, comprehensive consideration of the type of the main structure, geographical characteristics, seismic intensity and construction conditions and other factors, foundation design.
6.3.2 Residential foundation should meet the requirements of bearing capacity and stability, foundation deformation should ensure the structural safety and normal use of residential.
6.3.3 Foundation pit excavation and its support should ensure the safety of itself and its surrounding environment.
6.3.4 Pile foundation and treated foundation shall be tested for bearing capacity.
6.4 superstructure
6.4.1 Residential shall avoid the loss of bearing capacity and stability of the whole structure due to local damage. Seismically protected areas of the residence should not be used in the design of serious irregularities.
6.4.2 Residential buildings in earthquake-proofed areas shall carry out seismic calculations of structures and structural components, and shall take reliable anti-seismic measures according to the structural materials, structural system, height of the building, seismic intensity, site category and other factors.
6.4.3 In the residential structure, the part of stiffness and bearing capacity with sudden change shall take reliable strengthening measures. 9 degrees of seismic defense shall not be used in the residential staggered structure, connecting structure and structure with conversion layer.
6.4.4 The masonry structure of the residence shall take effective measures to ensure its integrity; it shall also meet the requirements of seismic performance in the seismic defense area.
6.4.5 bottom frame, upper masonry structure of residential, structural conversion layer of joists, floor slabs and vertical structural members immediately adjacent to the conversion layer should be taken to take reliable measures to strengthen; in the seismic area, the bottom frame should not be more than 2 floors and should be set up shear walls.
6.4.6 residential concrete structural elements, the thickness of the protective layer of concrete and reinforcing structure should meet the requirements of stress performance and durability.
6.4.7 Ordinary steel structure and light steel structure members and their connections in residential buildings shall take effective fireproofing and anticorrosion measures.
6.4.8 Wooden structural members of the residence shall take effective measures of fireproofing, moisture-proofing, anticorrosion and insect-proofing.
6.4.9 The enclosure structure and non-structural components attached to the residential structure shall take reliable connection or anchoring measures with the main structure and shall meet the requirements of safety and applicability.
7 Indoor Environment
7.1 Noise and Sound Insulation
7.1.1 Noise prevention measures shall be taken in the floor plan and building construction. The permissible noise level of bedrooms and living rooms under closed windows is 50dB (A sound level) during the daytime and 40dB (A sound level) at night.
7.1.2 The weighted standardized impact sound pressure level of the floor slab shall not be greater than 75dB.
Structural measures shall be taken to improve the impact sound insulation performance of the floor slab.
7.1.3 airborne sound weighted sound insulation, floor slabs should not be less than 40dB (separation of residential and non-residential space should not be less than 55dB), walls should not be less than 40dB, windows should not be less than 30dB, doors should not be less than 25dB.
Tectural measures should be taken to improve the airborne sound insulation performance of floor slabs, walls, windows, doors.
7.1.4 water, heating, electricity, gas pipelines through the floor and wall, the hole around the perimeter should be sealed sound insulation measures.
7.1.5 elevator should not be arranged next to the bedroom, living room. Subject to the conditions need to be adjacent to the arrangement, must take effective sound insulation and vibration damping measures.
7.1.6 pipe wells, pump room, fan room should take effective sound insulation measures, pumps, fans should take vibration damping measures.
7.2 sunshine, lighting, lighting and natural ventilation
7.2.1 residential should make full use of the external environment to provide sunlight conditions, each set of residential should be at least one living space can get winter sunshine.
7.2.2 Bedrooms, living rooms (halls), kitchens should be provided with external windows, window to floor area ratio should not be less than 1/7.
7.2.3 The set of space should be able to provide its use of functionally appropriate level of illumination. Outside the foyer, elevator vestibule, corridors, stairs, the ground level of illumination should be able to meet the functional requirements.
7.2.4 Dwellings should be able to natural ventilation, each set of residential ventilation openings should not be less than 5% of the ground area.
7.3 Damp-proofing
7.3.1 The roof, external walls and external windows of the residence shall be able to prevent rainwater and ice melt water from intruding into the interior.
7.3.2 The internal surfaces of residential roofs and external walls shall not be subject to condensation under the design conditions of indoor temperature and humidity.
7.4 air pollution
7.4.1 residential indoor air pollutant activity and concentration should be consistent with the provisions of Table 7.4.1.
Table 7.4.1 Residential Indoor Air Pollutant Limits
Sequence Item Limits
1 Radon ≤ 200Bq/m3
2 Free Formaldehyde ≤ 0.08mg/m3
3 Benzene ≤ 0.09mg/m3
4 Ammonia ≤ 0.2mg/m3
5 Total Volatile Organic Compounds (TVOC) ≤ 0.5mg/m3
8 equipment
8.1 General Provisions
8.1.1 Residential shall be provided with indoor water supply and drainage system.
8.1.2 severe cold areas and cold areas of the residence shall be provided with heating facilities.
8.1.3 residential lighting power supply system.
8.1.4 residential water supply risers, rainwater risers, fire risers, heating water supply and return risers and electrical, telecommunications trunk lines (pipes), should not be arranged in the set. Public **** function of the valves, electrical equipment and components for general regulation and maintenance, should be located in the **** use parts.
8.1.5 residential water meters, energy meters, heat meters and gas meters should be set up to facilitate management.
8.2 Water Supply and Drainage
8.2.1 The water quality of the domestic water supply system and the domestic hot water system, the water quality of the pipeline drinking water system and the water quality of the domestic miscellaneous water system shall meet the requirements for use.
8.2.2 Living water supply system should make full use of the water pressure of the town water supply network direct water supply.
8.2.3 living drinking water supply facilities and piping should be set up to ensure that the use of secondary water supply requirements. Water supply pipes, valves and fittings should meet the requirements of corrosion and pressure resistance.
8.2.4 The water supply pressure at the point of water supply within the set shall not be less than 0.05MPa, and the water supply pressure at the household pipe shall not be more than 0.35MPa.
8.2.5 Residential dwellings adopting the centralized hot water supply system, the temperature of the water at the point of water supply shall not be less than 45°C.
8.2.6 The water temperature at the point of water supply shall not be less than 45°C.
9.
8.2.6 sanitary ware and fittings should be used water-saving products, shall not use a flush greater than 6L toilet.
8.2.7 residential kitchen and bathroom drainage riser should be set up separately. Drainage pipe shall not cross the bedroom.
8.2.8 with showers and washing machines should be equipped with floor drains, the depth of its water seal shall not be less than 50mm. construction of sanitary appliances without water bending and living drainage pipe connection, below the drain should be equipped with water bending, the depth of its water seal shall not be less than 50mm.
8.2.9 basement, semi-basement in the sanitary appliances and floor drains should not be connected with the upper drainage pipe. Upper drain connection.
8.2.10 Dwellings suitable for the construction of water facilities and rainwater utilization facilities should be built in accordance with the relevant local regulations supporting the construction of water facilities and rainwater utilization facilities.
8.2.11 Residential houses with water systems must take safety measures to ensure the use, maintenance and prevention of misuse and misuse of drinking water.
8.3 heating, ventilation and air conditioning
8.3.1 centralized heating system should be taken in the room (household) temperature regulation measures, and should be set up in the household (unit) metering device or reserved for the installation of metering device location.
8.3.2 set centralized heating system of residential, indoor heating calculated temperature should not be lower than the provisions of Table 8.3.2:
Table 8.3.2 heating calculated temperature
Space category heating calculated temperature
Bedroom, living room (hall) and bathroom 18 ℃
Kitchen 15 ℃
Heated Stairwells and corridors 14 ℃
8.3.3 centralized heating system should be hot water as a heat medium, and should have a reliable water quality assurance measures.
8.3.4 The heating system should be no danger of freezing, and should be compensated for thermal expansion.
8.3.5 In addition to adequate power and power supply policy support, cold areas and cold areas of the residence should not be used in direct electric heating.
8.3.6 Kitchen and bathroom without external windows should be ventilated, and should be reserved for the installation of exhaust fan location and conditions.
8.3.7 When vertical ventilation ducts are used, measures should be taken to prevent backflow of branch pipes and leakage of shafts.
8.3.8 When a water source heat pump is selected as the cooling and heating source for residential or household air-conditioning (heat pump) units, it must be ensured that the back-flow water of the water source heat pump system does not damage and contaminate the water resources used.
8.4 Gas
8.4.1 Combustible gas that meets the quality standards for town gas shall be used in the residence.
8.4.2 The supply pressure of piped gas in the residence should not be higher than 0.2MPa.
8.4.3 Low-pressure gas should be used for all kinds of gas appliances in the residence, and the population pressure must be controlled within the permissible fluctuation of pressure of the appliances.
8.4.4 The gas equipment in the set should be set up in the kitchen or the balcony connected with the kitchen.
8.4.5 It is strictly prohibited to set up liquefied petroleum gas equipment, pipelines and cylinders in the basement and semi-basement of the residence. Bottled liquefied petroleum gas is not allowed to be used in dwellings on the 10th floor or above.
8.4.6 When installing artificial gas or natural gas equipment in the basement or semi-basement of a residence, safety measures must be taken.
8.4.7 The gas pipeline in the residence shall not be laid in the bedroom, the heating ditch, the exhaust pipe, the garbage tract and the elevator shaft.
8.4.8 Gas equipment and piping installed in the residence shall meet the requirements of clear distance from electrical equipment and adjacent piping.
8.4.9 The fumes from all types of gas appliances in the house must be discharged to the outside. Multiple equipment sharing a flue shall not interfere with each other. The fumes from the exhaust hoods of kitchen appliances shall not be combined with those from water heaters or heating stoves in a single flue.
8.5 Electricity
8.5.1 The selection of electrical wiring, wiring should be compatible with the electrical load of the residence, and should meet the safety and fire safety requirements.
8.5.2 Residential power supply and distribution shall take measures to prevent fire caused by ground faults.
8.5.3 When the emergency lighting is controlled by energy-saving self-extinguishing switches, measures shall be taken to light up automatically in case of emergency.
8.5.4 The main circuit breaker of the power supply shall be provided for each set of residence, and the main circuit breaker shall adopt the switching appliances that can disconnect the phase and neutral wires at the same time.
8.5.5 The power sockets and lighting in the residential set should be divided and distributed. Sockets installed at 1.8m and below should be safety sockets.
8.5.6 Residential units shall take appropriate lightning protection measures according to the lightning protection classification.
8.5.7 The grounding of the residential power distribution system should be reliable, and the total equipotential connection should be made.
8.5.8 Lightning protection grounding should be used with the AC work grounding, safety protection grounding, etc. *** with a group of grounding devices, grounding devices should be given priority to the use of the natural grounding body of the residential building, the grounding resistance of the grounding device must be determined in accordance with the minimum value of the requirements of the access equipment.
9 Fire prevention and evacuation
9.1 General
9.1.1 The surrounding environment of the residential building should provide external conditions for fire fighting and rescue.
9.1.2 Fire separation measures shall be taken between neighboring suites in residential buildings.
9.1.3 When the residential and other functional spaces in the same building, the residential part and non-residential part of the fire separation measures should be taken, and the residential part of the safety exit and evacuation stairs should be independently set up.
Shops, workshops and storerooms operating, storing and using articles of fire hazards of categories A and B are strictly prohibited to be attached to residential buildings.
9.1.4 The fire resistance, evacuation conditions and fire fighting facilities of residential buildings shall meet the fire safety requirements.
9.1.5 The installation of residential building equipment and pipeline laying should meet the fire safety requirements.
9.1.6 The fire prevention and evacuation requirements of the residential buildings shall be determined according to the number of floors of the building, floor area and other factors.
Note: 1 When the residential and other functional spaces are in the same building, the number of floors of the residential part should be superimposed on the number of floors of other functional spaces to calculate the number of building floors.
2 When there is a layer or a number of layers in the building with a height of more than 3m, the layers should be converted into layers according to the sum of their heights divided by 3m, and when the remainder is less than 1.5m, the excess is not included in the number of floors of the building; and when the remainder is greater than or equal to 1.5m, the excess is calculated according to 1 layer.
9.2 Fire resistance class and its components of the fire-resistant limit
9.2.1 Residential buildings should be divided into a fire-resistant level of one, two, three, four, the combustion performance and fire-resistant limit of its components should not be less than the provisions of Table 9.2.1.
Table 9.2.1 combustion performance and fire resistance limit of residential building components
Name Fire resistance class (h)
Components Grade I, Grade II, Grade III, Grade IV
Wall fireproofing incombustibility
3.00 non-combustible
3.00 non-combustible
3.00 non-combustible
3.00 non-combustible
3.00
3.00
Load-bearing exterior walls Noncombustible
3.00 Noncombustible
2.50 Noncombustible
2.00 Noncombustible
0.50
Non load-bearing exterior walls Noncombustible
1.00 Noncombustible
1.00 Noncombustible
0.50 Noncombustible
0.25
Walls in stairwells, walls in elevator shafts, walls between residential units, walls in residential subdivided units, load-bearing walls in households Non-combustible
2.00 Non-combustible
2.00 Non-combustible
1.50 Non-combustible
0.50
Dividing walls on both sides of evacuation walkways Non-combustible
1.00 Noncombustible
1.00 Noncombustible
0.50 Noncombustible
0.50
Column Noncombustible
3.00 Noncombustible
2.50 Noncombustible
2.00 Noncombustible
0.50
Beam Noncombustible
2.00 Noncombustible