I wrote a summary of supervision work when I was a senior director in Chongqing for your reference, hoping to provide some help for your work. If you have any good suggestions, I will listen wholeheartedly.
General manager of construction supervision
Is Chongqing Construction Supervision Consulting Co., Ltd. influenced by Chongqing? Entrusted by a real estate development company in Chongqing, we supervised the construction stage of the unit project. The project started on May 8, 20xx, and the pre-acceptance of the project was carried out on February 3, 20xx. The supervision unit has completed the work agreed in the entrusted supervision contract, and the construction supervision of this project is as follows:
I. Overview of the Project
Chongqing commercial and residential building is located in Chongqing? New area plot. This project is a high-rise residential building with a seismic fortification intensity of 6 degrees, a first-class fire protection rating, a second-class roof waterproof rating, and a design service life of 5 years. The total construction area of this project is 45m2, the total building height is /93.m,-3/28th floor, and the maximum span is 7.8m.
The foundation engineering adopts manual digging pile, independent column foundation and strip foundation trench. The foundation is placed on moderately weathered mudstone, and the natural compressive strength of mudstone is designed to be 9. 12mpa.
The main structure is a frame-shear wall structure, and the concrete strength grade of the main structure is c3-c45. Internal and external infilled walls are built with aerated concrete blocks, shale hollow bricks and mixed mortar (strength grade m5. ), constructional column and precast concrete small piece (lintel) c2.
Roof flat roof, sbs modified asphalt coiled material waterproof layer 3mm, polystyrene insulation layer 3mm, fine stone concrete c25 waterproof layer 4 thick.
Newly renovated interior, cement melon-rice stone leveling layer, wall mortar plastering the bottom layer, no topcoat, and waterproof putty scraping on the ceiling. Wear-resistant floor tiles are used for the stairwell floor and steps, glazed floor tiles are used for the elevator front room, wall tiles are pasted at the elevator door, and the rest walls are covered with stair railing and white latex paint. Balcony railings are made of laminated glass and stainless steel railings, entrance doors are security doors, and exterior walls and balcony doors are made of 5+9a+5 hollow glass plastic-steel windows. The external doors and windows are 5+9a+5 hollow glass plastic steel windows, and the entrance doors are steel doors.
Drainage works: Indoor drainage pipes and rainwater pipes are installed with pvc pipes.
Energy-saving projects: polystyrene particle insulation external wall, polystyrene board insulation roof, plastic steel window double-layer insulating glass insulation layer.
Water and electricity installation and elevator installation shall be carried out according to the contract.
Second, the contractor
Construction unit: Chongqing? Real estate development co., ltd.
Supervision unit: Chongqing Construction Supervision Consulting Co., Ltd.
Design unit: Chongqing Engineering Design Co., Ltd.
Investigation unit: Geological Survey Institute.
Contractor: Chongqing? Building Engineering Company
Third, the quality supervision unit: Chongqing? Regional quality supervision office
Four, supervision organization and supervision system
Is Chongqing Construction Supervision Consulting Co., Ltd. influenced by Chongqing? Entrusted by Real Estate Development Co., Ltd., we supervise the construction quality and progress of this project according to the relevant laws, regulations and supervision contracts, as well as the requirements of construction contracts, design and construction drawings, relevant design documents and relevant technical specifications.
1. Supervision organization: Chongqing Construction Supervision Consulting Co., Ltd. appointed comrades as chief supervision engineers, and as on-site supervision engineers, established Chongqing Project Supervision Department.
2. Supervision system: According to Code for Supervision of Construction Projects (gb53 19? 2) According to the requirements of relevant documents, this project has established the system of design disclosure and joint examination of construction drawings, the system of project quality acceptance and inspection, the system of examination and approval of construction organization design (scheme), the system of examination and approval of construction (resumption of work), the system of incoming inspection and witness sampling of raw materials, finished products, semi-finished products and components, the system of concealed engineering acceptance, the system of engineering quality inspection, the system of phased acceptance and completion acceptance of projects, the system of verification of guarantee materials and the system of on-site meeting.
Verb (abbreviation of verb) Development of supervision work
(1) Construction preparation stage
Supervisors all entered the construction site in the construction preparation stage, and planned and prepared the supervision work of this project. The quality of construction preparation work of the construction contractor before the start of construction was inspected, and the following work was mainly carried out:
1, reviewed the qualifications and qualifications of the construction unit, project manager, project technical director and main management personnel;
2. Check the establishment of quality and safety assurance system and quality and safety management system of the construction unit, as well as the establishment and implementation of on-site management system and responsibility system;
3. Review the construction organization design and related safety production construction scheme submitted by the construction unit;
4. Check the preparation of the construction technology, construction tools, equipment, materials and temporary facilities of the construction unit;
5. Participate in the design technical disclosure meeting and put forward constructive opinions and suggestions;
6. Prepare the construction supervision plan and detailed rules for supervision of key disciplines and divisions;
7. Organize supervisors to be familiar with the drawings carefully, find out the key points and difficulties of construction quality control, and formulate countermeasures;
8. Establish a site meeting system, organize the first site meeting, and conduct supervision and disclosure.
(2) Construction stage
1, check the implementation of construction site quality management system and construction quality inspection system and the availability of site construction technical management personnel; Check the construction organization design, safe and civilized construction scheme, scaffold erection scheme and construction technical disclosure prepared by the construction unit.
2. Supervise the construction unit to conduct on-site acceptance of raw materials, semi-finished products and finished products entering the construction site, including: 6. Record of important raw materials entering the site; 147 steel quality certificate and 147 sampling re-inspection report; 7 cement factory certificates and 7 re-inspection reports; 1 sand sampling inspection report; 9 Stone inspection report samples: shale brick pumping samples 1 group: 2 groups of hollow bricks and 2 groups of aerated concrete blocks: both groups of tiles have factory certificates: 5 copies of factory certificates; 5 copies of compressive strength test report; , all meet the design requirements and relevant quality standards, to ensure that all materials used in this project are qualified products.
3. Quality control points have been set for key working procedures or parts that affect the safety and use function of the structure, such as foundation positioning and setting-out, pile foundation inspection and acceptance, concealed acceptance of reinforcement engineering, fabrication and installation of formwork and support, acceptance and watering of concrete entering the site, waterproof construction of roof and toilet, construction of model wall and model room of decoration engineering, etc. Supervision means such as standing by, inspection, parallel inspection and witness sampling are adopted in the construction. During construction, 63 supervision records and 15 rectification notices were filled in.
4. Acceptance of concealed works and key working procedures item by item. Such as hidden acceptance of foundation pit, hidden acceptance of pile foundation engineering, hidden acceptance of floor reinforcement engineering and hidden acceptance of reinforced masonry.
5, for concrete, masonry mortar and steel joint in accordance with the provisions, strictly implement the witness sampling inspection system,
Concrete, masonry mortar and steel bar joints shall strictly implement witness sampling inspection system according to regulations, and witness sampling inspection shall be carried out according to sampling scheme, and unqualified specimens shall be handled in time. During construction, select 1# building 153 group and 2# building 1# building 59 group 128 group concrete cube compressive strength specimens for standard curing under the same conditions; Group 5 1 of Building 2: Take the compressive strength specimen of mortar cube of Building 2, 65438+31; Reinforced joint performance test 1#2# Building * * * Group 324.
6. Investigate and deal with quality behaviors in violation of construction engineering norms, standards and safety regulations in a timely manner; For the quality defects in the construction process, the supervisors urge and help the construction unit to correct and deal with them in time, and eliminate the problems that affect the engineering quality in the construction process.
7. In the process of construction, the supervisor promptly urges and guides the construction unit to prepare, collect and sort out the construction technical data (construction records, self-inspection records, hidden inspection records and various engineering technical data), ensuring the synchronization of engineering technical data with the project progress; At the same time, verify and sign the formed technical data to ensure the authenticity, accuracy and completeness of the engineering technical data, and * * * signed 286 application forms for engineering inspection.
8. Witness and monitor the sampling inspection (inspection) of important sub-projects involving structural safety and use function, such as drainage pipe irrigation test, roof and toilet water storage test, lightning protection grounding resistance test, external wall tile bonding strength test, building verticality and elevation observation, etc. , and checked the relevant inspection data and objects.
9. Organize the monthly meeting of the construction site and the supervision work disclosure meeting, put forward the matters needing attention and existing problems in time according to the progress of the project, and put forward relevant requirements in view of the problems such as on-site construction technology, engineering quality and construction safety.
(3) Quality acceptance.
The project supervisor supervised the whole process of the project construction quality, and did the following work for the project quality acceptance:
1, urge the construction unit to do a good job of self-inspection and mutual inspection before the project quality acceptance, and then put forward an application for inspection on the basis of self-inspection and evaluation, and the supervision engineer will sign the application for inspection of the construction party after inspection.
2. Participate in the acceptance of inspection lot and subdivisional work, and the on-site supervision engineer will sign the project acceptance opinions.
3, to participate in the division of engineering acceptance, foundation division of engineering, the main division of engineering quality evaluation report, the chief supervision engineer or director representative to sign on the division of engineering acceptance.
4. In the process of acceptance, timely notify the unqualified project or quality defect for rectification, and urge the construction unit to rectify in time. After the rectification is completed and the self-inspection is qualified, the supervision engineer will re-examine the rectification project and sign the rectification receipt after the acceptance is qualified.
5. Review and sign the application for completion acceptance of the construction unit, and issue the unit project quality evaluation report.
6, to participate in the project completion acceptance meeting organized by the construction unit, and write the project construction supervision report.
Six, engineering construction quality acceptance
1, foundation engineering quality
This foundation project adopts manual digging pile, independent column foundation and strip foundation.
The acceptance of basic main raw materials in the field reaches the qualified standard; The bearing capacity of the pile tip, the buried depth of the pile and the geometric size of the pile all meet the design requirements; Axis deviation of pile, elevation of pile top and verticality of pile body are all within the allowable error range of specifications; After inspection and evaluation, all concrete specimens meet the qualified standards.
The foundation piles are tested by low strain reflected wave method, and 5 piles are tested by * * *, and the concrete of the pile body is complete and qualified;
This foundation division is divided into five sub-projects of earthwork, formwork, reinforcement, concrete and cast-in-place structure. 7 1 quality acceptance record of inspection lot of subdivisional work, and the quality of each subdivisional work and inspection lot has reached the qualified standard.
On the basis of the contractor's self-inspection, the project of this division has passed the verification and acceptance of all construction parties.
2, the main structure quality situation
The main structure of this project is frame-shear wall structure, and all the main raw materials have passed the acceptance.
According to the construction technology, samples are taken from columns, beams, slabs, brick masonry and other objects according to regulations, and concrete specimens, welded joints of steel bars and mortar specimens all meet the requirements of design and acceptance specifications.
Hengyi Experimental Testing Center detects the concrete strength of the main structure on site, and * * * detects 13 layer concrete members (concrete).
Strength c3-c45), comply with the design requirements; The error value of stirrup spacing detection is within the allowable range of acceptance specification;
The main division * * * is divided into six subdivisional works: cast-in-place structure, infilled wall (aerated concrete block, shale hollow brick), masonry, steel bar, formwork and concrete, with 878 acceptance records signed by * * * (including 432 in Building/Kloc-0 and 446 in Building 2), and all subdivisional works and inspection lots have passed the inspection.
On the basis of the contractor's self-inspection, the project of this division has passed the verification and acceptance of all construction parties.
3, other division engineering quality
(1) Roofing waterproof project: The details of roofing waterproof are basically correct, there is no obvious water accumulation on the roof surface, there is no leakage in the roof water storage test, and the quality of the roof segment reaches the qualified standard.
2 after inspection and acceptance by the decoration department, there is no sand, crack and empty drum on the ground cushion; There is no leakage in the toilet water storage test; The ceiling wall is flat, without sand, cracks, hollowing and peeling; Doors and windows are installed and opened in the right direction, with flexible switches and complete accessories; Rails and handrails shall be installed firmly, and the safety scale shall meet the specification requirements; Bonding strength test of external wall tiles 1# and * * * test of 2# building are qualified.
The quality of the decoration division has reached the qualified standard.
(3) The sub-project of water supply and drainage has passed the acceptance: the project is constructed in strict accordance with the drawings, the raw materials used after the acceptance are in line with the design, and the positions of water supply and drainage holes are basically correct; Pipeline fittings shall be configured and installed according to the control design requirements; The slope of the sewage pipe is correct, the drainage is smooth and there is no leakage; The drainage pipeline irrigation test, ball pass test and water filling test show that there is no leakage in the pipeline and the water pressure of the water supply pipeline meets the requirements. The installation error of pipelines and facilities is within the allowable range of construction error, and the quality of the acceptance project reaches the qualified standard.
(4) The electrical installation project has been accepted: all the raw materials used in the project meet the design requirements after entering the site for acceptance, the power line piping is constructed in strict accordance with the drawings, the wiring circuit meets the design requirements, and the interphase insulation meets the requirements; Distribution box, switch socket installation position is correct, the switch action is accurate; The comprehensive quality of lightning protection grounding system is good after testing, and the grounding resistance of grounding system, down lead system and sky lightning receptor is 0.4? , meet the design requirements and pass the acceptance. The acceptance quality reaches the qualified standard.
5] Quality inspection and acceptance of thermal insulation and energy-saving projects
There are three main thermal insulation measures in this project: first, external wall thermal insulation, using poly-particle mortar thermal insulation layer, and thermal insulation slurry is pumped by Teli Building Materials Co., Ltd.; Secondly, the hollow double-layer glass (5+9a+5) of plastic steel doors and windows is insulated; Third, roof insulation, using extruded board (thickness 3 mm ~ 5 mm) as insulation layer. During the construction, the raw materials entering the site and the construction quality in the construction process shall be sampled for inspection and witnessed, so as to ensure the engineering quality to meet the design requirements of heat preservation and energy saving. These include:
14 sets of rubber powder polystyrene particle insulation test blocks, 12 sets of external wall insulation plastic anchors, and 8 sets of plastic anchors. 4 groups of 8mm quality inspection, galvanized steel wire mesh (.9? 12.7? 12.7mm), 6 groups of anti-crack mortar and 6 groups of rubber powder polystyrene particles, and the test results all meet the requirements of national acceptance standards.
There are four performance tests, glass dew point test and on-site air tightness test of plastic steel window 1 group, and the test results all meet the requirements of national acceptance standards.
The thermal insulation and energy saving effect of this project is confirmed by design accounting and meets the design requirements.