Housing and Urban Rural Development Bureau: Notice on printing and distributing the administrative measures for changes in survey and design of housing construction projects in Chengdu


Modify or provide new physical and mechanical indexes, hydrogeological parameters and anti floating water level of rock and soil layer; 3

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These Measures shall be followed if the approval contents are adjusted by the planning, civil air defense, fire control, health and other approval departments, or in order to improve the construction quality, ensure safety, compliance and rationality, and implement the relevant policy requirements such as environmental protection

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Article 6   Once the survey and design documents pass the review or complete the self review commitment, they shall not be modified without authorization

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  Measures of Chengdu housing and Urban Rural Development Bureau for the administration of changes in survey and design of housing construction projects on August 5, 2021   Article 1   In order to strengthen the supervision and management of the survey and design quality of housing construction projects, earnestly implement the mandatory provisions of engineering construction standards, protect national property and people’s life safety, and safeguard the social and public interests, according to the regulations on the administration of survey and design of construction projects and the regulations on the administration of survey and design of construction projects of Sichuan Province These measures are formulated in combination with the actual situation of our city, in accordance with the notice of Sichuan Provincial Department of housing and urban rural development on Further Strengthening the review and management of construction drawings of housing buildings and municipal infrastructure (cjbg [2020] No

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Supplementary survey found during construction or due to adverse geological effects caused by construction affecting site stability; 6

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Those involving the following contents are regarded as major changes( 1) Changes in relevant policies and standards such as green building, prefabricated building and sponge city( 2) Changes in relevant contents of Chengdu regulations on technical management of new commercial housing( 3) Change of geotechnical investigation report: 1

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HVAC specialty (1) change the cold and heat source scheme, including energy consumption mode of heating and air conditioning system, energy use efficiency, cold and heat source equipment configuration scheme and refrigerant of chiller( 2) Change the smoke control system, including changing the form of smoke control system, smoke control position of smoke control system, service area of smoke control system, parameters of smoke control system and equipment, etc( 3) Change the HVAC system, including transmission and distribution energy consumption of HVAC system, terminal system form and its service scope, main equipment parameters, etc( 4) Change the mode of protective ventilation system and main ventilation equipment parameters in civil air defense area( 5) Change the usual ventilation system of civil air defense area( 6) Other measures to change the energy-saving, green building, seismic and environmental protection design of HVAC discipline( 5) Other changes related to fire control( 6) Due to major changes in the survey report, the corresponding design documents shall be changed and reviewed again.

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Water supply and drainage specialty (1) change the water supply and drainage system and facilities related to energy conservation, environmental protection, sanitation and public interest functions( 2) Increase or decrease water supply and drainage facilities( 3) Change the water supply mode and water supply zoning( 4) Change the heat source or heating mode of domestic hot water( 5) Change the location and technical parameters of water supply and drainage equipment and facilities( 6) Change the fire control system and facilities involving personal and property safety( 7) Change the type of facilities in sponge city( 8) Change the design indicators of sponge city (catchment zoning indicators, overall indicators, etc.)( 9) Change the plane layout and protective measures of water supply and drainage system in civil air defense wartime

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Revise the geotechnical engineering design of anti floating anchor rod (pile), foundation treatment, etc( 4) Change of construction drawing design documents: 1

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Article 7   The change of survey and design shall not reduce the original standard, violate or reduce the implementation requirements of relevant policies of the state, Sichuan Province and Chengdu City, and shall not be changed after construction

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Article 2   The survey and design change mentioned in these Measures refers to the modification of the engineering survey report and construction drawing design documents that have completed the review and obtained the certificate of conformity or completed the self-examination commitment during the construction process (before completion)

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15) and Chengdu urban and rural planning regulations

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Article 8   Survey and design changes are divided into major changes and general changes

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Structural discipline (1) change the seismic fortification standard of building structure( 2) Change the building structure system( 3) Change the main load and environmental category of the building( 4) Change the section, arrangement and force transmission path of stressed components( 5) Changing fabricated structural members( 6) Change the foundation form, foundation section and layout or foundation treatment method( 7) Change the category, grade and quantity of main structural materials (except for reinforcement replacement of structural members)( 8) Change the number and position of structural expansion joints, settlement joints and seismic joints( 9) Design reinforcement during construction

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Major changes in building scale, plane position, shape and size, seismic fortification grade of structure, structural system, load value, foundation form, foundation buried depth, etc

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Architecture discipline (1) change the general plan of construction project design scheme and its attached drawings and accessories approved by the planning and natural resources department (including but not limited to house use, facade style, color, material, building area, scale, number of floors, plane layout and use function)( 2) Change the civil air defense project type, protection category, resistance level, chemical prevention level and wartime function approved by the competent civil air defense department( 3) Change the use environment of the house( 4) Change the thermal insulation, heat insulation, sound insulation and other measures of the building( 5) Change the number and form of stairs, elevators and escalators( 6) Change the building classification standard, fire compartment, safe evacuation, fire rescue and other fire protection design( 7) Change the location and scale of various equipment rooms and the location of equipment facilities( 8) Change the number of civil air defense entrances and exits, the form and location of civil air defense wartime special stairs

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Article 5   The sold housing construction projects shall not be changed except for design errors

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3) all relevant units: in order to strengthen the quality supervision and management of survey and design of housing construction projects in Chengdu and standardize the behavior of survey and design changes, in accordance with relevant laws, regulations and policy requirements, In combination with relevant reality, our bureau has formulated the management measures for changes in survey and design of housing construction projects in Chengdu, which is hereby printed and distributed for implementation

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in the design documents, resulting in supplementary survey work when the original survey report cannot meet the requirements; 7

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Engineering survey, supplementary survey or construction survey that is found to be inconsistent with the survey report during construction; 5

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Change the adverse geological conditions of the site involving the construction of civil air defense in different places; 4

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Click the “blue word” at the arrow to follow us and understand the real-time policy dynamics of construction!! ▎ source: Notice of Chengdu Municipal Bureau of housing and urban rural development and Chengdu Municipal Bureau of housing and urban rural development on printing and distributing the management measures for survey and design changes of housing construction projects in Chengdu (csjg [2021] No

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Article 3   The project owner shall be mainly responsible for the change of project survey and design; The project survey and design unit shall be responsible for the quality; The drawing review organization shall be responsible for the review

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Electrical discipline (1) change the power load level and distribution system form( 2) Change lightning protection category, lightning protection measures, grounding system, etc( 3) Change the automatic fire alarm and fire linkage control system, such as setting range, system form, linkage control system, detector selection, system power supply mode and distribution cable selection( 4) Change other electrical fire protection systems, such as emergency lighting and evacuation indication system, fire power supply system, etc( 5) Change the electrical safety protection of class A and class B workshops, warehouses and other explosion hazardous places, as well as special places such as play pools and swimming pools( 6) Change the design of electrical energy conservation, electrical green building, electrical earthquake resistance, electric vehicle charging pile, etc( 7) Intelligent system( 8) Change the normal power supply and distribution system and lighting system in the civil air defense area

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Change geological age, geomorphic unit, re division of geotechnical stratification, construction site category and seismic section; 2

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Article 4   The survey and design unit and drawing review organization shall improve the internal quality control mechanism, effectively improve the survey, design and review quality, and minimize the changes to the reviewed qualified construction drawing design documents

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