How to send technical disclosure messages before construction?

Technical disclosure refers to the technical disclosure made by relevant professional and technical personnel to the personnel involved in the construction before the start of a unit project or the construction of a sub-project. Doing a good job in technical disclosure can not only scientifically organize construction, but also avoid accidents such as technology and quality. Today, let's take a look at how to do a good job in technical disclosure.

1, informatization+technical disclosure

Bim+ technical disclosure Bim information technical disclosure is a comprehensive construction application of BIM technology. Its purpose is to combine construction data with technical disclosure. Through the means of BIM construction simulation, the technical disclosure is not simply expressed in the form of animation, but interacts with the construction personnel, and allows the field personnel to supplement the technical disclosure information, so that the technical disclosure information can be applied to all aspects of construction.

2, several forms of technical disclosure

(1) Written disclosure: It is the most commonly used disclosure method to disclose the contents of written disclosure to subordinates. Both parties sign a disclosure letter and implement it step by step. The responsibility lies with people, and it is well documented, with good results. (2) Meeting disclosure: hold a meeting to convey the disclosure content, supplement and improve the technical disclosure content through discussion and consultation of multiple types of work, and avoid technical problems in advance. (3) Model/model disclosure: model-oriented, making models that meet various requirements for reference and commonly used in demanding projects; Or make a model to deepen the understanding of the actual operator. (4) Listing disclosure: Relevant disclosure requirements shall be written on signs and hung on the construction site, which is applicable to subdivisional works with fixed contents and personnel.

Three-level disclosure system (1) The first level is the overall disclosure of the project construction technology, and the chief engineer of the project will make a comprehensive technical disclosure to the heads of all departments, sub-projects and all managers. (2) The second-level technical disclosure is that the chief engineer or the minister of the engineering department will make disclosure to the technical director and technical personnel in units of subdivisional work before the construction of subdivisional work. (3) Three-level technical disclosure refers to the technical disclosure made by the technical director of subdivisional work or the on-site engineer/technical director to the technician, foreman or operator.

Essential content of first-level disclosure (1) Project overview and construction period requirements. (2) Investigation on the construction site. (3) Implementation construction organization design, construction sequence, progress of key lines and major nodes, and phased control objectives. (4) Construction scheme and methods, technical standards and quality and safety requirements; Important projects and sub-projects adopting new technologies and new materials. (5) Process cross-coordination requirements and coordination requirements of all departments. (6) Main materials, equipment, labor arrangement and capital demand. (7) Project quality plan and cost target. (8) Design changes. The necessary contents of secondary disclosure (1) construction details and component processing drawings, material test parameters and mixture ratio. (2) Field measurement control network, monitoring measurement methods and requirements. (3) Main construction scheme measures, key working procedures, special working procedure construction scheme and specific requirements. (4) Coordination of construction schedule requirements and related construction procedures. (5) Emergency rescue measures for major hazard sources. (6) Technical measures to be taken for construction in unfavorable seasons; Protection measures for semi-finished products and finished products under normal circumstances. (7) The names of technical standards, specifications and procedures adopted in this project, construction quality standards and specific measures to achieve the goal of creating excellence, quality inspection items and their requirements. (8) Specification, performance and test requirements of main materials; Construction machinery and equipment and labor allocation. (9) Requirements for safe and civilized construction and environmental protection. The necessary content of the three-level disclosure (1) details the construction drawings, construction technology, operation methods and matters needing attention. (2) Sub-project quality standards, handover procedures and acceptance methods, and precautions for finished product protection. (3) Processes prone to common quality defects and corresponding technical measures and preventive measures. (4) Time limit for a project requirements and guarantee measures. (5) Design changes. (6) Measures to reduce costs. (7) Site safety and civilized construction requirements. (8) On-site emergency rescue measures and emergency escape measures.

3, the main content of technical disclosure

The chief engineer of the construction unit or the chief engineer shall make technical disclosure of the general situation of the project and various technical and economic indicators and requirements to the construction leader of the construction team or work area; Main construction methods, key construction technologies and problems existing in implementation; Technical handling details and matters needing attention of special engineering grade; Construction technical requirements, implementation plans and matters needing attention of new technologies, new processes, new materials and new structures; Construction organization design network plan, schedule requirements, construction department heat, construction machinery, labor arrangement and organization; The cooperative relationship between the general contractor and subcontractors and the handling of related problems; Construction quality standards and safety technologies, as far as possible, adopt standardized operations such as construction methods promoted by this unit.

The technical director of the construction team shall make technical disclosure on the engineering situation and local topography, landforms, engineering geology and various technical and economic indicators to the project director, quality inspector and safety officer of the unit; Specific requirements, practices and construction difficulties of design documents; The specific requirements of construction organization design or construction scheme and its implementation steps and methods; Specific practices in construction, what process standards are adopted, and what construction methods are adopted by this enterprise; Key positions in the implementation process, possible problems and solutions; Requirements of construction progress, process crossover, determination of summer heat in construction department, and tasks of construction team; The model, quantity, entry time, operation program arrangement and other related issues of the main construction machinery used in the construction; The relevant operating procedures, technical regulations and precautions for new technologies, new structures and new materials; Construction quality standards, specific measures and precautions of safety technology.

The person in charge of the unit project or the engineer in charge of technology shall make technical disclosure to the person in charge of each operation team and the workers of each type of work, focusing on the specific technical requirements of the sub-projects that each operation team is responsible for, as well as the construction technology standards or internal construction methods adopted; Compiling the construction quality standards of divisional projects; Common quality defects prevention methods and matters needing attention, construction safety disclosure, introducing the lessons of safety accidents of similar projects in the past and the specific safety countermeasures to be taken.

Key points of technical disclosure in construction of different sub-projects

1. Properties and characteristics of earthwork foundation soil; Location and protection methods of various stakes; Scope and depth of excavation and filling, slope requirements, compaction method of backfill soil and lime soil, and requirements of bulk density index; Removal and treatment methods of groundwater or surface water; Relevant regulations and safety technical measures shall be applied to the construction technology and operation procedures.

2. Masonry part; Axis position; The horizontal elevation of each floor; Windows and doors hole position; Wall thickness and wall thickness change; Mortar strength grade, mortar mixture ratio, mortar test block number and maintenance; The positions, quantities, specifications and dimensions of reserved holes and embedded parts in each discipline; Quality requirements of bricks, stones and other raw materials at different positions and elevations; Masonry assembly methods and quality standards; Preventive measures and safety precautions for common quality defects.

3. Axis and horizontal position, blocks, cross-section forms and geometric dimensions of various reinforced concrete members in formwork engineering; Formwork support scheme and technical requirements; The specific technical requirements for the strength and stability of the supporting system; Time of form removal; The location, elevation, size and quantity of embedded parts and reserved holes, and the methods to prevent their displacement; Technical requirements and treatment methods of special parts; Quality standards and their preventive measures and safety technical measures for common quality defects.

4. Types, models, diameters, quantities, connection methods and technical requirements of steel bars in various components of steel bar engineering; Technical measures to prevent steel bar displacement and maintain the thickness of steel bar protective layer; Methods and procedures of steel bar replacement; Technical treatment of special parity; Matters related to operation, especially aerial work; Quality standards and preventive measures for common quality defects, safety technical measures and precautions.

5 varieties, technical specifications and quality standards of raw materials such as cement, sand, stone, admixture and water for concrete engineering; Concrete types and strength grades at different positions and elevations; The control of its mixture ratio, water cement ratio and slump and corresponding technical measures; Relevant technical regulations and requirements for mixing, transportation and vibrating; Concrete pouring method and sequence, concrete curing; The specific requirements, quantity and corresponding technical measures and specifications of the construction site; Technical measures for temperature control in mass concrete construction: specific technical details of impervious concrete construction and implementation methods of technical measures; Location, quantity and maintenance of concrete specimens; During the construction, specific technical measures should be put forward for the displacement of various prefabricated parts and reserved holes, especially for the displacement of anchor bolts of mechanical equipment; Quality standard vertebra and quality common fault prevention measures (due to the serious quality problems of concrete engineering, more attention should be paid to technical disclosure), concrete construction safety technical measures and saving measures.

6 types, models, quantities, specifications and quality standards of materials used in shelf engineering; Shelf erection method, strength and stability technical requirements (must meet the requirements of solid and reliable); Technical measures and requirements for lifting shelves layer by layer; Verticality and settlement deformation requirements of shelf columns; Self-inspection and safety inspection of shelf engineering workers are special inspections. Technical requirements and inspection methods for assembly and installation of important parts of shelves, such as the following supporting cantilever steel frames; Connection mode and requirements of shelves and buildings; The method, sequence and scheduled items of dismantling shelves; Quality standardization and safety measures of shelf engineering.

7. Type, weight, quantity and lifting point position of components to be hoisted in various parts of the building; Technical performance of lifting equipment; Rope specifications, running route of hoisting equipment, hoisting sequence and hoisting method; Hoisting contact signals, labor organization, command and cooperation; Connection mode of hoisting nodes; Connection sequence and method of hoisting component support system; Technical measures for the overall stability of hoisting components (such as prestressed reinforced concrete roof truss) during hoisting; Contact the Municipal Power Supply Bureau for power supply; Matters needing attention in hoisting operation; Error standard of hoisting components and prevention of common quality defects: safety technical measures for hoisting components.

8. Model, weight, quantity, geometric size, plane position and elevation of steel structure engineering, varieties, models and specifications of various steels, connection methods and technical measures; Specifications and operation precautions of welding equipment, welding technology and technical standards, technical measures, weld type, position and quality standards; The assembly line sequence of the whole assembly process from parts blanking; The quality standard of steel structure and the prevention and control of common quality diseases should be comprehensively applied, and the construction safety should be technically applied.

9. Floor type, engineering practices and technical requirements, construction sequence and quality standards of various parts of floor engineering; Construction technology of new floors or special industries (such as radio and television) with special requirements; Floor quality standards and technical measures taken to ensure engineering quality standards.

10. Roofing and waterproofing works: structure, type, type, technical performance, characteristics, quality standards and precautions of roofing and waterproofing works. Types, mixture ratio, apparent density, thickness and operation technology of insulation layer and waterproof material. Basic practices, technical requirements, methods and operations of paving or painting; Various node processing methods; Engineering water-stopping technology that has not been treated and needs to be treated in seepage prevention and coagulation; Protection and antivirus in operation and its safety measures.

1 1. Types, grades, practices and requirements, quality standards and technical measures of finished product protection in various parts of decoration engineering; New decoration materials, construction technology and operation steps with special decoration requirements, as well as cross-operation with related processes; Safety technical measures, especially the safety measures for external decoration aerial work.

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