GB/T 50378-2019 PDF in English
GB/T 50378-2019 (GB/T50378-2019, GBT 50378-2019, GBT50378-2019)
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GB/T 50378-2019: PDF in English (GBT 50378-2019) GB/T 50378-2019
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
UDC
P GB/T 50378-2019
Assessment standard for green building
ISSUED ON: MARCH 13, 2019
IMPLEMENTED ON: AUGUST 01, 2019
Issued by: Ministry of Housing and Urban-Rural Development of PRC;
State Administration for Market Regulation.
Table of Contents
Foreword ... 5
1 General provisions ... 7
2 Terms ... 7
3 Basic requirements ... 8
3.1 General requirements... 8
3.2 Assessment and rating ... 9
4 Safety and durability ... 12
4.1 Prerequisite items... 12
4.2 Scoring items... 12
5 Health and comfort ... 15
5.1 Prerequisite items... 15
5.2 Scoring items... 17
6 Occupant convenience ... 20
6.1 Prerequisite items... 20
6.2 Scoring items... 20
7 Resource saving ... 24
7.1 Prerequisite items... 24
7.2 Scoring items... 26
8 Environment livability ... 33
8.1 Prerequisite items... 33
8.2 Scoring items... 34
9 Promotion and innovation ... 38
9.1 General requirements... 38
9.2 Bonus points... 38
Explanation of wording in this standard ... 40
List of quoted standards ... 41
Assessment standard for green building
1 General provisions
1.0.1 In order to implement the concept of green development, promote the
high-quality development of green buildings, save resources, protect the
environment, meet the people's growing needs for a better life, this standard is
formulated.
1.0.2 This standard applies to the assessment of the green performance of civil
buildings.
1.0.3 The assessment of green buildings shall follow the principle of adapting
measures to local conditions, combining the characteristics of the climate,
environment, resources, economy and culture of the area where the building is
located, to make comprehensive assessment of such performances as safety,
durability, health and comfort, living convenience, resource conservation, and
environmental livability.
1.0.4 The site design and architectural layout of green buildings shall be
combined with the topography and geomorphology; the architectural layout
shall be adapted to the climatic conditions and geographical environment of the
site; the wind environment, light environment, thermal environment, acoustic
environment of the site shall be organized and utilized.
1.0.5 In addition to complying with the provisions of this standard, the
assessment of green buildings shall also comply with the provisions of relevant
national standards.
2 Terms
2.0.1 Green building
A high-quality building which, during the whole life cycle, saves resources,
protects the environment, reduces pollution, provides people with healthy,
applicable and efficient use of space, maximizes the realization of harmonious
coexistence between man and nature.
2.0.2 Green performance
It involves the comprehensive performance of building safety and durability,
health and comfort, living convenience, resource saving (land saving, energy
saving, water saving, material saving) and environmental livability.
2.0.3 Decorated
Before delivery, all interior walls, top surfaces, floors of residential buildings are
paved and painted, doors and windows, fixed furniture, equipment pipelines,
switch sockets, kitchen and toilet fixtures are installed in place; all fixed surfaces
in public areas of public buildings are paved and painted; basic equipment such
as water, heating, electricity and ventilation are all installed in place.
2.0.4 Heat island intensity
The difference between the temperature in an area of a city and the temperature
in the suburbs, expressed by the difference between the temperature at the
representative measurement points of the two, which is the characterizing
parameter of the urban heat island effect.
2.0.5 Green building material
The building materials which, during the whole life cycle, can reduce the
consumption of resources and reduce the impact on the ecological environment,
has the characteristics of energy saving, emission reduction, safety, health,
convenience and recyclability.
3 Basic requirements
3.1 General requirements
3.1.1 The green building assessment shall take a single building or a group of
buildings as the assessment object. The assessment object shall implement
and deepen the green development requirements as put forward by the upper-
level statutory planning and related special plans; the systematic and holistic
indicators shall be evaluated based on the overall situation of the engineering
project to which the building belongs.
3.1.2 Green building assessment shall be carried out after the completion of the
construction project. Pre-assessment can be carried out after the construction
drawing design of the construction project is completed.
3.1.3 The assessment applicant shall conduct full-life technical and economic
analysis of the participating buildings; select appropriate technologies,
equipment and materials; control the entire process of planning, design,
construction, operation; submit corresponding analysis and testing report and
related documents during the assessment. The party applying for assessment
shall be responsible for the authenticity and completeness of the submitted
The concentration reduction basis is the relevant requirements of the
current national standard "Indoor air quality standard" GB/T 18883.
4 Safety and durability
4.1 Prerequisite items
4.1.1 The site shall avoid geologically dangerous areas such as landslides and
mudslides. The flood-prone areas shall have reliable flood control infrastructure;
the site shall be free from threats of hazardous chemicals, flammable and
explosive sources; it shall be free from hazards of electromagnetic radiation
and radon-containing soil.
4.1.2 The building structure shall meet the requirements of bearing capacity
and building function. Building's exterior walls, roofs, doors and windows,
curtain walls and external insulation and other enclosure structures shall meet
the requirements of safety, durability and protection.
4.1.3 External facilities such as external shading, solar energy facilities, air-
conditioning outdoor units, external wall flower ponds shall be designed and
constructed uniformly with the main structure of the building; it shall have the
installation, repair and maintenance conditions.
4.1.4 The non-structural components, equipment and auxiliary facilities inside
the building shall be firmly connected and able to adapt to the deformation of
the main structure.
4.1.5 The exterior doors and windows of the building must be installed firmly;
their wind pressure resistance and watertightness performance shall comply
with the current relevant national standards.
4.1.6 The floor of the toilet and bathroom shall be provided with a waterproof
layer; the wall and ceiling shall be provided with a moisture-proof layer.
4.1.7 Passage spaces such as corridors and evacuation passages shall meet
the requirements of emergency evacuation and emergency care; it shall be kept
unblocked.
4.1.8 There shall be a warning and guidance marking system for safety
protection.
4.2 Scoring items
I Safety
pedestrian and bicycle traffic systems have adequate lighting: the assessment
score is 8 points.
II Durability
4.2.6 Take measures to improve the adaptability of buildings. The total
assessment score is 18 points, which are scored and accumulated according
to the following rules:
1 Adopt a universal, open, flexible and variable use space design, or take
measures to change the use of the building's functions: 7 points;
2 Separate building structure from building equipment pipeline: 7 points;
3 Use equipment and facility layout methods or control methods that are
compatible with building functions and spatial changes: 4 points.
4.2.7 Take measures to improve the durability of construction parts and
components. The total assessment score is 10 points, which is scored and
accumulated according to the following rules:
1 Use pipes, pipelines and fittings with good corrosion resistance, aging
resistance and durability: 5 points;
2 Select long-life products for the active parts; consider the same life of the
parts combination. When parts with different service life are combined,
use a structure that is convenient for separate replacement, update and
upgrade: 5 points.
4.2.8 Improve the durability of building structure materials. The total
assessment score is 10 points, which are scored based on the following rules:
1 For durability design based on 100 years: 10 points.
2 Use building structural materials with good durability and meet one of the
following conditions: 10 points:
1) For concrete members, increase the thickness of the protective layer of
steel bar or use high-durability concrete;
2) For steel members, use weathering-resistance structural steel and
weathering-resistance ant-corrosion paints;
3) For wood members, use ant-corrosion wood, durable wood or durable
wood products.
4.2.9 Reasonably use durable and easy-to-maintain decoration building
materials. The total assessment score is 9 points, which are respectively scored
national standard "Code for sound insulation design of civil buildings" GB
50118;
2 The sound insulation performance of exterior walls, partition walls, floors,
doors and windows shall meet the minimum requirements in the current
national standard "Code for sound insulation design of civil buildings" GB
50118.
5.1.5 Architectural lighting shall meet the following requirements:
1 The quantity and quality of lighting shall comply with the current national
standard "Standard for lighting design of building" GB 50034;
2 The places where people stay for a long time shall adopt non-hazardous
lighting products that comply with the current national standard
"Photobiological safety of lamps and lamp systems" GB/T 20145;
3 The fluctuation depth of the light output waveform of the selected LED
lighting products shall meet the requirements of the current national
standard "Technical requirements for application of LED indoor lighting"
GB/T 31831.
5.1.6 Measures shall be taken to protect the indoor thermal environment. For
buildings with central heating and air-conditioning systems, the design
parameters such as temperature, humidity, fresh air volume in the room shall
comply with the relevant provisions of the current national standard "Design
code for heating ventilation and air conditioning of civil buildings" GB 50736; for
buildings with non-central heating and air-conditioning systems, there shall be
measures or reserved conditions to protect the indoor thermal environment.
5.1.7 The thermal performance of the enclosure structure shall meet the
following requirements:
1 Under the conditions of indoor design temperature and humidity, no
condensation shall be allowed on the inner surface of the non-transparent
building envelope;
2 There shall be no condensation on the roof and exterior walls of buildings
with heating;
3 The thermal insulation performance of the roof and external walls shall
meet the requirements of the current national standard "Code for thermal
design of civil building" GB 50176.
5.1.8 The main function room shall have a thermal environment adjustment
device independently controlled on site.
5.1.9 The underground garage shall be equipped with a carbon monoxide
5.2.6 Take measures to optimize the indoor acoustic environment of the main
functional rooms. The total assessment score is 8 points. The noise level
reaches the average of the low and high standard limits in the current national
standard "Code for sound insulation design of civil buildings" GB 50118: 4
points. If it reaches the high standard limit: 8 points.
5.2.7 The sound insulation performance of the main functional rooms is good.
The total assessment score is 10 points. They are respectively scored and
accumulated according to the following rules:
1 The airborne sound insulation performance between the components and
adjacent rooms reaches the average of the low and high standard limits
in the current national standard "Code for sound insulation design of civil
buildings" GB 50118: 3 points. If it reaches the high standard limit: 5 points;
2 The impact sound insulation performance of the floor slab reaches the
average of the low and high standard limits in the current national standard
"Code for sound insulation design of civil buildings" GB 50118: 3 points. If
it reaches the high standard limit: 5 points.
5.2.8 Make full use of natural light. The total assessment score is 12 points,
they are respectively scored and accumulated according to the following rules:
1 In at least 60% of the area proportion of the residential building's indoor
main functional space, the number of hours with an illuminance value not
less than 300 lx is not less than 8 h/d on average: 9 points.
2 Public buildings are scored and accumulated according to the following
rules:
1) The proportion of the area whose daylighting coefficient meets the
daylighting requirements in the inner zone reaches 60%: 3 points;
2) The ratio of the area of the underground space with an average
daylighting coefficient of not less than 0.5% to the area of the first floor
of the basement reaches more than 10%: 3 points;
3) The average number of hours where the lighting intensity value of the
area with at least 60% area ratio of the main indoor functional space is
not lower than the lighting requirements is not less than 4 h/d: 3 points.
3 The main function room has glare control measures: 3 points.
IV Indoor thermal environment
5.2.9 Have a good indoor hot and humid environment. The total assessment
score is 8 points. The scoring is according to the following rules:
6 Occupant convenience
6.1 Prerequisite items
6.1.1 Buildings, outdoor venues, public green spaces, urban roads shall have
a coherent barrier-free walking system.
6.1.2 There shall be public transportation stations within 500 m from the
pedestrian entrance of the site or a dedicated shuttle bus that connects to the
public transportation stations.
6.1.3 The parking lot shall have electric vehicle charging facilities or have the
installation conditions for charging facilities, meanwhile it shall set up
reasonable parking spaces for electric vehicles and barrier-free vehicles.
6.1.4 The location of the bicycle parking lot shall be reasonable and convenient
for people.
6.1.5 The construction equipment management system shall have automatic
monitoring and management functions.
6.1.6 The building shall be equipped with an information network system.
6.2 Scoring items
I Transit and accessibility
6.2.1 The connection between the venue and the public transportation station
is convenient. The total assessment score is 8 points, which are scored and
accumulated according to the following rules:
1 The walking distance of the site entrance & exit to the public transportation
station is not more than 500 m, or the walking distance to the rail transit
station is not more than 800 m: 2 points. The walking distance of the site
entrance & exit to the public transportation station is not more than 300 m,
or the walking distance to the rail transit station is not more than 500 m: 4
points;
2 There are no less than 2 lines of public transportation stations within 800
m walking distance from the site: 4 points.
6.2.2 The indoor and outdoor public areas of the building meet the full-age
design requirements. The total assessment score is 8 points, which are scored
and accumulated according to the following rules:
4) There is a social public parking lot (garage) within 500 m of the
surrounding area;
5) The venue is not closed or the public walkway in the venue is open to
the public.
6.2.4 Open spaces such as urban green spaces, squares and public sports
venues can be reached on foot. The total assessment score is 5 points, which
are scored and accumulated according to the following rules:
1 The walking distance from the entrance of the site to urban parks, green
spaces, residential parks, squares is not more than 300 m: 3 points;
2 The walking distance to the medium-sized multifunctional sports venue is
not more than 500 m: 2 points.
6.2.5 Set up fitness venues and spaces reasonably. The total assessment score
is 10 points, which are scored and accumulated according to the following rules:
1 The outdoor fitness field area is not less than 0.5% of the total land area:
3 points;
2 Set up a dedicated fitness slow track with a width of not less than 1.25 m,
meanwhile the length of the fitness slow track is not less than 1/4 of the
circumference of the red line of the site and not less than 100 m: 2 points;
3 The indoor fitness space is not less than 0.3% of the above-ground building
area and not less than 60 m2: 3 points;
4 The stairwell has natural lighting and good vision, meanwhile the distance
from the main population is not more than 15 m: 2 points.
III Intelligent operation
6.2.6 Set up an automatic remote metering system for classified and graded
energy consumption; set up an energy management system to realize the
monitoring, data analysis and management of building energy consumption.
The assessment score is 8 points.
6.2.7 Set up the air quality monitoring system for PM10, PM2.5 and CO2
concentrations; have the functions of storing monitoring data for at least one
year and real-time display. The assessment score is 5 points.
6.2.8 Set up a water remote metering system and an online water quality
monitoring system. The total assessment score is 7 points, which are scored
and accumulated according to the following rules:
1 Set up a water consumption remote metering system, which can classify,
water saving quota and not greater than the average value: 3 points.
3 If the average daily water consumption is not greater than the lower limit of
the water saving quota: 5 points.
6.2.12 Regularly evaluate the building operation effect; optimize the operation
based on the results. The total assessment score is 12 points. They are scored
and accumulated according to the following rules:
1 Develop technical plans and plans for the assessment of green building
operation effects: 3 points;
2 Regularly check an adjust public facilities and equipment, with records of
inspection, debugging, operation and calibration; meanwhile the records
are complete: 3 points;
3 Carry out energy-saving diagnosis and assessment regularly, and
formulate and implement an optimization plan based on the assessment
results: 4 points;
4 Regularly inspect and publicize various types of water and water quality: 2
points.
6.2.13 Establish a green education and publicity and practice mechanism;
compile a manual for the use of green facilities; form a good green atmosphere;
regularly conduct user satisfaction surveys. The total assessment score is 8
points. They are respectively scored and accumulated according to the
following rules:
1 Organize no less than twice a year green building technology publicity,
green life guidance, disaster emergency drills and other green education
publicity and practical activities; have activity records: 2 points;
2 Have a platform for green life display, experience or exchange and sharing;
provide users with a manual for green facilities: 3 points;
3 Carry out a user satisfaction survey on the green performance of the
building once a year; formulate improvement measures based on the
survey results; implement and publicize them: 3 points.
7 Resource saving
7.1 Prerequisite items
7.1.1 The energy-saving design of the building's shape, plane layout, spatial
scale, envelope structure shall be combined with the natural conditions of the
assessment score is 15 points. It is scored according to the following rules:
1 The water efficiency rating of all sanitary appliances reaches grade 2: 8
points.
2 If the water efficiency grade of more than 50% sanitary appliances reaches
grade 1, meanwhile the others reach grade 2: 12 points.
3 The water efficiency rating of all sanitary appliances reaches grade 1: 15
points.
7.2.11 Water-saving equipment or technology is used in the green irrigation and
air-conditioning cooling water system. The total assessment score is 12 points,
which are scored and accumulated according to the following rules:
1 Water-saving equipment or technology is used for green irrigation, which
is scored according to the following rules:
1) Use water-saving irrigation system: 4 points.
2) On the basis of using the water-saving irrigation system, take water-
saving control measures such as soil moisture sensors and automatic
shut-off devices in rainy days, or use plants without permanent irrigation:
6 points.
2 The air conditioning cooling water system adopts water-saving equipment
or technology, which is scored according to the following rules:
1) The circulating cooling water system adopts methods such as taking
water treatment measures, enlarging the water collecting tray, setting
up a balance pipe or balance water tank, etc., to avoid cooling water
overflow when the cooling water pump stops: 3 points.
2) Use cooling technology without evaporative water consumption: 6
points.
7.2.12 Combined with rainwater comprehensive utilization facilities to create an
outdoor landscape water body, the water replenishment of the outdoor
landscape water body using rainwater is greater than 60% of the water body
evaporation, meanwhile use the ecological water treatment technology that
guarantees the water quality of the water body. The total assessment score is
8 points, which are respectively scored and accumulated according to the
following rules:
1 For rainwater entering the outdoor landscape water body, use ecological
facilities to reduce runoff contamination: 4 points;
2 Use aquatic animals and plants to ensure the water quality of outdoor
points.
3 Mixed structure: The concrete structure part and the steel structure part
shall be evaluated in accordance with the first and second paragraphs of
this article; the score shall be the average of the scores.
7.2.16 Industrialized interior parts are selected for building decoration. The total
assessment score is 8 points. For architectural decoration, if the proportion of
industrialized interior parts accounted for more than 50% of the consumption of
similar parts, 3 points are awarded for 1 type; 5 points for 3 types; 8 points for
3 or more types.
7.2.17 Select recyclable materials, reusable materials and waste building
materials. The total assessment score is 12 points. They are respectively
scored and accumulated according to the following rules:
1 The ratio of recyclable materials to reusable materials is scored according
to the following rules:
1) It reaches 6% for residential buildings or 10% for public buildings: 3
points.
2) It reaches 10% for residential buildings or 15% for public buildings: 6
points.
2 The selection and consumption ratio of waste building materials shall be
scored according to the following rules:
1) Use a kind of waste building materials that accounts for no less than
50% of the consumption of similar building materials: 3 points.
2) Select two or more waste building materials, each of which accounts
for no less than 30% of the consumption of similar building materials: 6
points.
7.2.18 Select green building materials. The total assessment score is 12 points.
The proportion of green building materials is not less than 30%: 4 points. It is
not less than 50%: 8 points. It is not less than 70%: 12 points.
8 Environment livability
8.1 Prerequisite items
8.1.1 The planning and layout of the building shall meet the sunshine standard,
meanwhile it shall not lower the sunshine standard of surrounding buildings.
catching. The smoking area is set up with warning signs that smoking is
harmful to health: 4 points.
8.2.5 Use site space to set up green rainwater infrastructure. The total
assessment score is 15 points, which are scored and accumulated according
to the following rules:
1 Recessed green spaces, rain gardens and other green spaces and water
bodies that have the function of regulating and storing rainwater account
for 40% of the total green space: 3 points; accounts for 60%: 5 points;
2 Connect and guide at least 80% of roof rainwater into the ground ecological
facilities: 3 points;
3 Connect and guide no less than 80% of road rainwater into the ground
ecological facilities: 4 points;
4 The proportion of permeable pavement area in hard pavement reaches
50%: 3 points.
II Outdoor physical environment
8.2.6 The environmental noise in the site is better than the requirements of the
current national standard "Standard of environmental noise of urban area" GB
3096. The total assessment score is 10 points. It is scored based on the
following rules:
1 The environmental noise value is greater than the standard limit of the
category 2 acoustic environment functional area and less than or equal to
the standard limit of the category 3 acoustic environment functional area:
5 points.
2 The environmental noise value is less than or equal to the standard limit of
the category 2 acoustic environment functional area: 10 points.
8.2.7 Building and lighting design avoid light pollution. The total assessment
score is 10 points. They are scored and accumulated according to the following
rules:
1 The visible light reflectance of the glass curtain wall and the impact of the
reflected light on the surrounding environment meet the requirements of
the "Optical and thermal performance of glass curtain wall" GB/T 18091:
5 points;
2 The limit of light pollution of outdoor night scene lighting complies with the
current national standard "Specification for limitation to obtrusive light of
outdoor lighting" GB/T 35626 and the current industry standard "Code for
lighting design of urban nightscape" JGJ/T 163: 5 points.
9 Promotion and innovation
9.1 General requirements
9.1.1 When evaluating green buildings, improvement and innovation items shall
be evaluated in accordance with the provisions of this chapter.
9.1.2 The scores of improvement and innovation items shall be the sum of the
bonus items. When the score is greater than 100 points, it shall be taken as 100
points.
9.2 Bonus points
9.2.1 Take measures to further reduce the energy consumption of building
heating and air conditioning system. The total assessment score is 30 points.
The energy consumption of the heating and air-conditioning system of the
building is reduced by 40% compared with the current national energy-saving
standards for buildings: 10 points. For each reduction of 10%: another 5 points,
at most 30 points.
9.2.2 Adopt the architectural style design suitable for regional characteristics.
Inherit the regional architectural culture according to local conditions. The
assessment score is 20 points.
9.2.3 Reasonably select abandoned sites for construction; or make full use of
old buildings that are still usable. The assessment score is 8 points.
9.2.4 The green capacity rate of the venue is not less than 3.0. The total
assessment score is 5 points. It is scored based on the following rules:
1 The calculated value of the green capacity of the venue is not less than 3.0:
3 points.
2 The measured value of the green capacity of the venue is not less than 3.0:
5 points.
9.2.5 Use structural systems and building components that meet the
requirements of industrialized construction. The assessment score is 10 points.
It is scored based on the following rules:
1 The main structure adopts steel structure and wood structure: 10 points.
2 The main structure adopts a prefabricated concrete structure; the
proportion of the concrete volume of the prefabricated parts aboveground
to the total volume of concrete reaches 35%: 5 points; 50%: 10 points.
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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