Annex: guidelines for the preparation of special construction schemes for divisional and subdivisional works with high risk (Exposure Draft) Department of project quality and safety supervision, Ministry of housing and urban rural development Guidelines for preparation of special construction scheme for divisional and subdivisional works with high risk on October 27, 2021 1、 Foundation Pit Engineering （1） Project overview 1.
Construction requirements: specify quality and safety objectives and construction period requirements (commencement date and planned completion date of the project) , the planned commencement date and planned completion date of the foundation pit project.
Technical parameters: support structure construction, dewatering, curtain, key equipment and other technical parameters.
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Acceptance criteria: define relevant acceptance criteria and acceptance conditions according to the construction process.
(2) Engineering geology: landform, formation lithology, adverse geological processes and geological disasters, special rock and soil, earthwork excavation design of foundation pit (including earthwork excavation mode and layout, and the relationship between earthwork excavation and bracing), etc.
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Construction management personnel: list of management personnel and post responsibilities (such as project leader, project technical leader, constructor, quality controller, team leaders, etc.) 2.
(5) List of main quantities.
treatment measures.
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(4) underground pipelines (including water supply, drainage, gas, heat, power supply, communication, fire protection, etc.) importance, specification, buried depth and use.
Construction methods and operation requirements: process flow, key points, common problems and prevention of preparation before foundation pit engineering construction, groundwater control, support construction, earthwork excavation and so on .
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Risk identification and classification: risk factor identification and foundation pit safety risk classification.
Construction organization design, etc.
Special operation personnel: list of special operation personnel with certificates and post responsibilities (with special operation certificate).
Supervision Survey plan.
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The notice on the public solicitation of opinions on the guidelines for the preparation of special construction schemes for high-risk divisional and subdivisional works (Draft for comments) is to earnestly implement the provisions on the safety management of high-risk divisional and subdivisional works, and further strengthen and standardize the safety management of high-risk divisional and subdivisional works in housing construction and municipal infrastructure projects, In order to improve the safety production level of housing construction and municipal infrastructure projects, the Ministry has organized the preparation of the guide for the preparation of special construction schemes for divisional and subdivisional works with high risk (Draft for comments), which is now open to the public for comments.
9, Sanlihe Road, Haidian District, Beijing 100835.
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Acceptance procedures and personnel: determine the composition of acceptance personnel (relevant principals of construction, survey, design, construction, supervision, monitoring and other units) according to the specific acceptance procedures 3.
Material and equipment plan, etc.: mechanical equipment configuration, demand plan for main materials and revolving materials, main material input plan, mechanical property requirements and detailed requirements for sampling retest, test plan.
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Relevant construction drawings: general construction layout, plan of surrounding environment of foundation pit, monitoring plan, schematic diagram of foundation pit earthwork excavation, schematic diagram of foundation pit construction sequence, schematic diagram of foundation pit berm closure, etc..
(4) climate characteristics and seasonal weather of the construction site.
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(3) importance, road characteristics and service condition of adjacent roads.
(6) for locations near rivers, lakes, canals, dams, etc., historical data shall be consulted to clarify the water level height in flood season and analyze the possible impact on foundation pit.
Fixing Socket Cross Hole Nail Plate
Project documents: construction contract (construction contracting mode) Survey documents, foundation pit design and construction drawings, current terrain and influence range, pipeline detection or query data, relevant design documents, geological disaster risk assessment report, relevant regulations of the owner, pipeline drawings, etc.
Inspection requirements: mobilization quality inspection and sampling inspection of materials used in foundation pit engineering, inspection contents and inspection standards of each process during foundation pit construction.
Acceptance contents: after the foundation pit is excavated to the base and the deformation is relatively stable, the horizontal displacement and settlement of the top of the support structure, the settlement of buildings (structures), the settlement of surrounding roads and pipelines, the control value of anchor rod (support) axial force, the drainage measures at the top (bottom) of the slope and the integrity of the side wall of the foundation pit.
Zhou Bian Jian (Organization) Contact information of all parties of buildings, roads, underground pipelines and other property right units, information of rescue hospital (name, telephone, rescue line).
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Organizational assurance measures: safety organization, safety assurance system and safety responsibilities of corresponding personnel.
Construction schedule: construction schedule of foundation pit works, specific to the schedule of subdivisional works.
(4) Construction technology 1.
Construction layout: general layout of foundation pit retaining structure construction and earthwork excavation stage (including temporary water, electricity, safe and civilized construction site requirements, identification of dangerous and large projects, etc.) and description, and service conditions around the foundation pit.
Legal basis: relevant laws, regulations, normative documents, standards, specifications, etc.
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(IX) calculation sheet and relevant construction drawings.
Full time safety personnel: list of full-time safety production management personnel and post responsibilities.
Technical guarantee conditions: the preparation of relevant equipment, materials, components and accessories for the implementation of the foundation pit project, and the technical skills of the proposed personnel.
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Labor plan.
(2) Engineering importance, number of floors, structural form, foundation form, buried depth of foundation, plane layout of pile foundation or composite foundation reinforcement, pile length and other design parameters, construction and completion time, structural integrity and service condition of adjacent buildings (structures).
(2) Preparation basis 1.
Email: anquanchu@mohurd.gov.cn 。 2.
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Mechanical equipment input plan.
Mailing address: engineering quality and safety supervision department of the Ministry of housing and urban rural development, No.
Surrounding environmental conditions: (1) location relationship between adjacent buildings (structures), roads and underground pipelines and foundation pit works.
List of major hazard sources and emergency measures.
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Monitoring measures: monitoring organization, monitoring scope, monitoring items, monitoring methods Monitoring frequency, early warning value and control value, safety patrol, information feedback, layout of monitoring points, etc.
Overview and characteristics of foundation pit project: (1) basic information of the project: perimeter, area, excavation depth, design service life of foundation pit, foundation pit support design (including plane layout, profile and design parameter table), etc.
Technical measures: safety assurance measures, quality and technical assurance measures, civilized construction assurance measures, environmental protection measures, seasonal construction assurance measures, etc.
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(VII) Acceptance requirements 1.
(V) Construction safety assurance measures 1.
Emergency material preparation.
Composition and responsibilities of emergency response leading group, composition and responsibilities of emergency rescue group, including rescue, security, logistics, medical rescue, aftermath, emergency rescue workflow, response measures, contact information, etc.
Relevant units and individuals can give feedback through the following ways and means before November 15, 2021: 1.
Construction design calculation sheet (if the foundation pit is the formal construction drawing design of a professional qualified unit, this annex can be omitted) 2.
(3) Engineering hydrogeology: surface water, groundwater, formation permeability, groundwater recharge and discharge, foundation pit groundwater control design (including construction precipitation and curtain water separation).
Other operation personnel: list of other personnel and post responsibilities.
When the conditions are complex, the section drawing shall also be drawn and marked with section line and section number, and the section drawing shall be marked with adjacent buildings (structures) Buried depth of buildings, purpose, material, pipe diameter, buried depth of underground pipelines, etc.
(7) Status of foundation pit works under construction or in use in adjacent areas.
(VI) construction management and allocation and division of labor of operation personnel 1.
(VIII) Emergency response measures 1.
(III) Construction plan 1.
(5) the plane relationship and size between the environment plan and the project shall be marked.
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based on foundation pit engineering.
Process flow: general construction process flow of foundation pit engineering and process flow of subdivisional works.
