The following is the related content of Zhejiang green building design standards brought by Zhongda Consulting for your reference.

1 General Provisions

1.1.1 This standard is formulated to implement the national "four festivals" policy of saving land, energy, water and materials, promote the healthy and rapid development of green buildings advocated by the state, and build an environmentally friendly, efficient, safe and comfortable living environment.

1.1.2 In the practice of green building, the following requirements should be met:

1 In the whole life cycle of the building, under suitable conditions, resources should be saved to the maximum extent to realize sustainable utilization of resources

;

2 Save resources and provide users with safe, healthy and applicable use space;

3 protect the environment, reduce the load of buildings on the environment, and live in harmony with nature.

1.1.3 this standard is applicable to civil buildings newly built, rebuilt and expanded in Zhejiang province.

1.1.4 the planning, design, construction and operation management of green buildings shall conform to the current national standards in addition to this standard.

3 Planning

3.1 Site

3.1.1 The site selection of green buildings should pay attention to the harmony between the building and the surrounding environment. Firstly, the building should be avoided to be built in an unsuitable site, and secondly, the negative impact of site selection on the environment should be reduced.

1 the overall urban planning should proceed from the whole region, properly handle the relationship between urban construction and regional economy, society and ecological environment, comprehensively evaluate all kinds of resources (water, wetlands, forests, minerals, etc.) in the region, determine urban development conditions according to resource carrying capacity and rationality, and make overall arrangements for regional infrastructure and public service facilities to avoid repeated construction and protect non-renewable resources.

2 Item 2: If there are reliable urban flood control measures to make the flood control capacity meet the requirements of the Flood Control Standard (GB51211), the site can also be selected when the altitude is lower than the urban flood control standard water level; Item 3: If the park management department or the community owner agrees to exchange the land equal to or higher than the original land value, then this land can also be used as the site selection; Item 4: Except for the experimental areas in nature reserves that conform to the Regulations of the People's Republic of China on Nature Reserves.

8 make full use of the original municipal traffic network, which not only reduces the repeated construction of traffic, but also achieves the intensive use of land, and indirectly reduces the waste gas pollution of new vehicles.

9 cultural relics are the remains of material culture and spiritual culture in history. They have historical, artistic and scientific values, and are important cultural heritages. They witness the historical and humanistic development of a place, so we must protect them.

3.1.2

1~4 are designed to maintain the natural features of the original topography of the site as much as possible.

1 Protect biodiversity, such as opening up habitat corridor, providing nesting space and feeding facilities.

3 includes not changing the shape of the original river course and restoring the lost function of the original river course.

4 such as land improvement, improving the ecological value of land and restoring the original living conditions of organisms.

6~9 greening project is one of the important components of green buildings. The research shows that greening is the most effective measure to absorb CO2 and improve the thermal environment in the site. In addition, greening can also play a role in nourishing emotions, cultivating life, regulating climate, reducing noise, beautifying the environment, increasing the water conservation capacity of the earth and improving soil ecology. However, there are some greening concepts that blindly admire artificial lawns, value grass over trees and blindly introduce rare tree species that are not suitable for local climate. The greening of green buildings advocates local plants and emphasizes survival rate. Advocate the organic combination of arbor, shrub, grass and vine; Advocate all-round and three-dimensional greening of roofs, balconies, windowsills and walls; Greening should also pay attention to water saving. Drip irrigation and micro-spraying should be adopted, and reclaimed water, rainwater and groundwater should be used as water sources as much as possible. Of course, we should not blindly pursue excessive greening rate, resulting in land waste.

3.1.3

1~6 We should use the concept of urban and rural planning and circular economy, and consider both single buildings and the overall planning and overall layout of cities or regions; It is necessary to improve the intensive and economical degree of land use by coordinating the overall layout of urban and rural space, and realize the reasonable development, basic stability and effective control of the total amount of urban and rural construction land; Strengthen the management of town planning and construction, formulate various supporting measures and policies, encourage, support and guide farmers to build houses relatively centrally, and save land; It is necessary to further develop and utilize urban underground space and realize intensive land use in the city. Further reduce the occupation and destruction of cultivated land by clay brick production.

3 The building density of public buildings can be appropriately increased as appropriate. For residential buildings, the building density and floor area ratio should be determined based on creating a livable environment.

4 judging from the current national conditions, residential buildings will still be the main construction projects in the construction industry in the next few years. In order to respond to the call of the state to build ordinary houses and save land intensively, it is stipulated here that the floor area of apartment buildings should not exceed 121m2.

5 Three-dimensional parking space refers to underground parking garage or above-ground three-dimensional parking garage.

6 reserving space for development, reconstruction and expansion reflects the sustainable development view of green building planning, but we should not blindly pursue "reservation" to the detriment of the space comfort of the proposed building.

7 ~ 8 building orientation refers to the spatial orientation of a building, which is generally marked by the most concentrated direction of the main rooms, and the orientation of the building should be determined from the overall situation. In addition to climatic conditions, topographical features also have an influence on the orientation of buildings. In a flat site, the layout of buildings is relatively free. In order to reduce the amount of earthwork, buildings are often arranged in parallel with contour lines. When vertical contour lines must be arranged, staggered floors and falling can also be used to combine with the terrain. In addition, the direction of roads inside and outside the site, beautiful scenery in some directions, etc. are also considerations for the architectural orientation.

9 If the building spacing is too large, it will waste land and increase the length of roads and pipelines; Too small will affect sunshine, hinder air circulation, and it is difficult to meet the requirements of sight and fire prevention. Therefore, the building spacing should be carefully determined. In addition, different spacing is adopted according to the nature of the building, such as the sunshine spacing in schools and hospitals can be larger.

11 Space design should not only provide people with a comfortable outdoor communication space, but also create a space environment with the characteristics of the times in a unified and changing venue; The emphasis on local culture is to remind designers that the landscape design of the site should reflect the local humanistic environment, so that the site design has obvious regional characteristics, thus reflecting the view of "people-oriented, harmony between man and nature" in green buildings.

12 barrier-free facilities design is an architectural design that embodies humanity and is also advocated by green buildings.

14 during the construction period, the main transportation roads are hardened, which is a measure to prevent the construction vehicles from producing dust and polluting the environment at the construction site. However, since hardening itself is also a kind of soil pollution, it is better to choose the roads to be hardened at the construction site in the same position as the proposed roads, or choose the original roads at the site.

3.2 Energy

3.2.1

1 There are two kinds of energy storage systems: cold storage system and heat storage system, among which the cold storage technologies include ice storage technology, water storage technology and ice water storage technology. Using energy storage system has the following advantages:

1) It can balance the peak and valley load of power grid and reduce the impact on urban power supply system;

2) reduce the operating cost of air conditioning by using the power difference between peak and valley loads of the power grid;

3) The capacity of refrigeration main machine is reduced, and the power capacity increase fee and power supply and distribution facilities fee of air conditioning system are reduced.

3.3 water resources

3.3.1

1 ~ 2 Optimal allocation of all kinds of water resources is the basis for effective utilization of all kinds of water resources, and considering and planning the comprehensive utilization of all kinds of water resources is of designated significance for subsequent design and construction.

3 sewage recycling is an effective measure to increase revenue and reduce expenditure. at the initial stage of sewage recycling in China, it is of industrial and social significance to vigorously advocate and promote sewage recycling.

4 At present, the comprehensive utilization of sewage, wastewater and rainwater resources and the construction of reclaimed water facilities have not been paid enough attention, and have been recognized and implemented to a certain extent only in water-deficient cities and areas. However, with the acceleration of economic construction and the increasing demand for water resources, this measure of increasing revenue and reducing expenditure should be effectively implemented in all regions.

3.3.2 the reasonable application of water supply mode, water supply quantity and water supply pressure of each water supply system is the basic requirement to ensure the daily water safety of users. According to the principle of high quality and high use, low quality and low use, water supply by different quality can reduce the cost of water treatment, so that the supply water such as direct drinking water, tap water and reclaimed water can be used efficiently according to their respective purposes, and the waste caused by unified water quality requirements will not be caused.

3.3.3 The rainwater and sewage separate drainage system means that the domestic drainage system and the rainwater drainage system are divided into two drainage systems, in order to protect the water body from organic pollution from domestic sewage. When there is a sewage treatment plant in the city, there are sewage pipeline system and rainwater pipeline system in the municipal government, and the two drainage systems in residential quarters are easy to connect with them. However, there are still cities without sewage treatment plants, so domestic sewage should be treated by itself before being discharged into rainwater pipes.

3.3.4 making full use of various sewage and wastewater resources is an effective way to increase revenue and reduce expenditure, but in areas with abundant water resources and poor local economic conditions, its economic feasibility and construction feasibility should be comprehensively considered.

3.3.5 Ecological rainwater comprehensive utilization system mainly includes the following main aspects:

1 rainwater collection and utilization, open source and reduce expenditure;

2. Indirect utilization of rainwater can make rainwater seep back into the ground, replenish and conserve groundwater resources, improve the ecological environment, alleviate land subsidence and seawater intrusion, and reduce water logging;

3 comprehensive utilization of rainwater, using urban rivers and lakes and various artificial and natural water bodies, swamps and wetlands to store, purify and utilize urban runoff rainwater, reduce waterlogging, and improve water circulation system and urban ecological environment.

3.4 materials and resources

3.4.1 there are many kinds of building materials, and the overall planning should be made according to the building itself and local conditions, so as to achieve the purpose of rationality and economy.

3.4.2 China is promoting a conservation-oriented society, which requires us to meet people's use needs and minimize resource consumption, so as to meet the use requirements without extravagance and waste.

3.4.3 rational use of existing buildings within the site includes two aspects: first, reasonable functional transformation of existing buildings within the site to become an organic part of new buildings; Secondly, the existing buildings within the site will be used as functional rooms in the construction process or corresponding auxiliary rooms in the factory area, so that they can be fully and reasonably reused.

For the buildings that need to be demolished in the site, a large amount of construction waste will be generated during the demolition process, so that the reuse of the buildings can not only reduce the material consumption, but also reduce the urban environmental burden. We should try our best to classify all kinds of building materials, such as steel and wood, and recycle them effectively.

3.4.4 In order to realize the minimization, harmlessness, resource utilization and recycling of garbage to the greatest extent, a reasonable plan must be made.

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