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This standard is developed by revising the original Guangdong provincial standard for engineering construction DBJ/T 15-83-2011 Assessment standard for green building in Guangdong province on the basis of the national standard GB/T 50378-2014 Evaluation standard for green building by the drafting group according to the requirements of Notice on issuing the development and revision plan on engineering construction standards of Guangdong Province in 2014 (YUEJIANKEHAN [2014] No. 1384) issued by the Guangdong Provincial Housing and Urban-Rural Construction Department. During the revision of this standard, the practical experience and research results of green building in Guangdong Province in recent years were carefully summarized, the domestic and international advanced experience was drawn for reference, and this standard was finalized based on extensive consultations, through repeated discussions, coordination and modifications on specific contents, and review.
The main contents of this standard are as follows: general provisions, terms, basic requirements, land saving and outdoor environment, energy saving and energy utilization, water saving and water resource utilization, material saving and material resource utilization, indoor environment quality, construction management, operation management, and promotion and innovation.
The main revisions are as follows:
1. The applicable scope of the standard has been extended from residential building, office building of public building, hotel buildings, business building, venue building and cultural and educational building to various civil buildings.
2. The assessment has been classified into design assessment and operation assessment.
3. As for the assessment index system of green buildings, the assessment index "construction management" has been added based on the following indexes: land saving and outdoor environment, energy saving and energy utilization, water saving and water resource utilization, material saving and material resource utilization, indoor environment quality and operation management.
4. Assessment methods have been adjusted. All kinds of assessment indexes are scored, and determine the green building grade with the total score on the premise that the scoring items of each type of assessment index meet the minimum score requirements. Accordingly, the general items and preferred items in DBJ/T 15-83-2011 Assessment standard for green building in Guangdong province have been merged into scoring items.
5. Bonus items have been added to encourage the promotion and innovation of green building technology and management.
6. The assessment method and grade determination method of multi-functional comprehensive single building have been defined.
7. Some assessment provisions have been modified, and assessment scores have been assigned to all scoring items and bonus items.
Assessment standard for green building in Guangdong province
1 General provisions
1.0.1 This standard is developed in combination with the specific conditions of Guangdong Province with a view to implementing the national technical and economic policies, saving resources, protecting the environment, regulating the assessment of green buildings in Guangdong Province, and promoting the sustainable development of Guangdong Province.
1.0.2 This standard is applicable to the assessment of green civil buildings.
1.0.3 The assessment of the green building shall be carried out comprehensively in terms of the energy, land, water and material conservation and environmental protection within the total life cycle of the building in accordance with local conditions and by combining the climate, environment, resource, economy and cultural features at the place where the building is located.
1.0.4 In addition to the requirements of this standard, the assessment of green buildings shall also meet the requirements of the laws and regulations of the nation and Guangdong Province as well as the current relevant mandatory standards.
2 Terms
2.0.1
green building
building that is able to maximally save the resources (energy, land, water and material), protect the environment and reduce pollution to provide people with a healthy, suitable and efficient application space and is in harmonious coexistence with the nature in its total life cycle
2.0.2
average heat island intensity
average value (℃) of the difference between hourly air temperature in residential area and air dry bulb temperature on typical meteorological days at the same time
2.0.3
annual runoff volume capture ratio
proportion of accumulated rainwater in the site in one year controlled through natural and artificial enhanced infiltration, stagnant storage, regulation and storage, and collection and reuse to the total rainfall in the whole year
2.0.4
renewable energy
general terms of non-fossil energies such as wind energy, solar energy, water energy, biomass energy, geothermal energy and ocean energy
2.0.5
reclaimed water
undrinkable water derived from wastewater which, after being treated, reaches specified quality standard and meets certain requirements for use
2.0.6
non-traditional water source
water sources different from the traditional surface water supply and groundwater supply, including reclaimed water, rainwater, air conditioning condensate, seawater, etc.
2.0.7
reusable material
recycled materials that can be directly reused without changing the material form, or can be directly reused after combination and repair
2.0.8
recyclable material
recycling materials that may be recycled by changing the material form
2.0.9
wind speed amplification
ratio of the wind speed around the building at 1.5m above ground level to that at the same height on the open ground in the same terrain
2.0.10
commercial facilities
small business houses such as shops, post offices, savings offices and barbershops with a building area of not more than 300m2 per partition unit, which are set up on the first floor or the first and second floors of residential buildings
2.0.11
remote small town
towns far away from urban traffic trunk lines and not yet equipped with public transport stations
2.0.12
rural small projects
projects that are far away from big cities and do not belong to urban areas, with a single building area of not more than 5,000m2 and without supporting infrastructures such as municipal and commercial facilities
3 Basic requirements
3.1 General requirements
3.1.1 As for assessment of green building, a single building or group of buildings may be the assessment object. When assessing a single building, all systematic and integral indexes shall be assessed based on the overall engineering project of the building.
3.1.2 The assessment on green building shall be classified into design assessment and operation assessment. The design assessment shall be carried out after the architectural engineering construction drawing is examined and approved; while operation assessment shall be carried out one year later since the building passes the completion acceptance and is put into service.
3.1.3 The party applying for assessment shall conduct the technical and economic analysis of the buildings during the whole life cycle, reasonably determine the building scale, select appropriate building technologies, equipment and materials to conduct the whole process control during the planning, design, construction and operation phases, and submit corresponding analysis and test reports and related documents.
3.1.4 The assessment agency shall, according to the relevant requirements of this standard, review the reports and documents submitted by the party applying for assessment, issue an assessment report and determine the grade. Site inspection shall also be conducted for the buildings for which the operation assessment is applied.
3.2 Assessment and grading
3.2.1 The assessment index system of green buildings consists of 7 indexes, namely, land saving and outdoor environment, energy saving and energy utilization, water saving and water resource utilization, material saving and material resource utilization, indoor environment quality, construction management and operation management. Each type of indexes includes prerequisite items and scoring items. The assessment index system also uniformly sets bonus items.
3.2.2 For design assessment, the two indexes of construction management and operation management are not assessed, but the relevant provisions may be pre-assessed. Operation assessment shall cover 7 indexes.
3.2.3 The assessment results of the prerequisite items shall be meeting or not meeting the standard, or not assessed; the assessment results of the scoring items and the bonus items shall be a score.
3.2.4 For the green building assessment, the grade shall be determined based on the total score.
3.2.5 The total score of the 7 indexes in the assessment index system shall all be 100 points in total. The scores of Q1, Q2, Q3, Q4, Q5, Q6 and Q7 of each scoring item of the 7 indexes shall be calculated by dividing the actual scores of the scoring item of the index of the participating buildings by the total scores of the scoring item applicable to such building and multiplying them by 100 points.
3.2.6 The additional score Q8 of bonus items shall be determined according to the relevant requirements of clause 11 of this standard.
3.2.7 The total score of green building assessment shall be calculated using the following equation, in which the weights ω1~ω7 of the scoring items of the 7 indexes in the assessment index system shall be taken according to Table 3.2.7.
∑Q＝ω1Q1＋ω2Q2＋ω3Q3＋ω4Q4＋ω5Q5＋ω6Q6＋ω7Q7＋Q8 (3.2.7)
Table 3.2.7 Weight of various assessment indexes of green building
Land saving and outdoor environment ω1 Energy saving and energy utilization ω2 Water saving and water resource utilization ω3 Material saving and material resource utilization ω4 Indoor environment quality ω5 Construction management ω6 Operation management ω7
Design assessment Residential buildings 0.21 0.24 0.20 0.17 0.18 — —
Public buildings 0.16 0.28 0.18 0.19 0.19 — —
Operation assessment Residential buildings 017 0.19 016 0.14 0.14 0.10 0.10
Public buildings 0.13 0.23 0.14 0.15 0.15 0.10 0.10
Notes:
1 "-” in the table indicates that the construction management and operation management do not participate in the design assessment.
2 For single buildings with both residential and public functions, the weights of various assessment indexes shall be the average values of the weights corresponding to residential buildings and public buildings.
3.2.8 Green buildings are divided into five grades: one-star grade B and one-star grade A (corresponding to national standard one-star grade), two-star grade B and two-star grade A (corresponding to national standard two-star grade) and three-star grade (corresponding to national standard three-star grade). The green buildings of these 5 grades shall meet the requirements of all prerequisite items as specified in this standard, and the points of scoring items of each index shall be not less than 40 points. When the total scores of the green buildings reach 45 points, 50 points, 55 points, 60 points and 80 points respectively, the grades of the green buildings are one-star grade B, one-star grade A, two-star grade B, two-star grade A and three-star grade.
Table 3.2.8 Corresponding relationship between green building assessment score and star grading
Total score Star grading of green buildings in Guangdong Province
45 One-star grade B
50 One-star grade A
55 Two-star grade B
60 Two-star grade A
80 Three-star grade
3.2.9 For multi-functional comprehensive single buildings, the applicable areas shall be assessed in accordance with all the assessment provisions of this standard, and the scores of assessment provisions shall be determined.
4 Land saving and outdoor environment
4.1 Prerequisite items
4.1.1 The project site selection shall meet the local urban and rural planning, and shall meet the construction control requirements of various protected areas and cultural relics protection.
4.1.2 The site shall avoid natural hazards such as floods, landslides and mudslides, and shall be free from the threats of dangerous chemicals, inflammable and explosive sources, and hazards of electromagnetic radiation and the radon-containing soil.
4.1.3 The pollution sources with excessive discharge shall not exist in the site.
4.1.4 The sunshine distance and other related indexes shall meet the current regulatory detailed planning requirements of the city (above prefectural level) and the relevant requirements of the approved urban planning, with the sunshine standards of surrounding buildings not reduced.
4.1.5 The pedestrian passage in the site shall adopt barrier-free design, which shall meet the requirements of the current national standard GB 50763 Codes for accessibility design.
4.1.6 The outdoor land area of sports facilities in residential quarters with a total construction area of 100,000 m2 and above shall reach 0.3m2 per capita.
4.2 Scoring items
I land utilization
4.2.1 The utilization of land shall be economical and intensive, for which the total score is 18 points. For residential buildings, score according to the per capita residential land index according to the rules in Table 4.2.1-1; for public buildings, score according to their floor area ratio according to the rules in Table 4.2.1-2.
Foreword ii
1 General provisions
2 Terms
3 Basic requirements
3.1 General requirements
3.2 Assessment and grading
4 Land saving and outdoor environment
4.1 Prerequisite items
4.2 Scoring items
5 Energy saving and energy utilization
5.1 Prerequisite items
5.2 Scoring items
6 Water saving and water resource utilization
6.1 Prerequisite items
6.2 Scoring items
7 Material saving and material resource utilization
7.1 Prerequisite items
7.2 Scoring items
8 Indoor environment quality
8.1 Prerequisite items
8.2 Scoring items
9 Construction management
9.1 Prerequisite items
9.2 Scoring items
10 Operation management
10.1 Prerequisite items
10.2 Scoring items
11 Promotion and innovation
11.1 General requirements
11.2 Bonus items
Explanation of wording in this standard
List of quoted standards
