Uploaded on: 2019-12-26 13:52:59 come from: Road and bridge municipal administration / Road and bridge works / Municipal engineering
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4. Scope and content of on-site supervision 4.1 Scope of on-site supervision: road works, water supply and drainage pipeline works, electric power drainage pipe 4.2 Content of on-site supervision ⑴. The main content of on-site supervision of road works is the mix proportion control of cement stabilized macadam, asphalt mixing plant, and on-site supervision (backstage) of asphalt mixture delivery temperature. The paving thickness of cement stabilized macadam on site, and whether the mixture has coarse and fine aggregate segregation; On site supervision and inspection of the temperature of asphalt mixture transported to the site, paving temperature, rolling temperature, rolling steps, paving thickness, and whether there is gray material (segregation of coarse and fine aggregates) in the asphalt mixture (front desk). Traffic control and curing after water stabilized compaction During lime soil subgrade construction, the distribution thickness of on-site ash (determined by calculation in advance), whether the power of compaction equipment meets the compaction standard, the control of optimal water content and layered filling thickness, as well as temporary drainage during construction and curing after molding The main contents of the on-site supervision of pipeline works are concrete construction and trench excavation and backfilling ①. There must be a weighbridge on the concrete pouring site for concrete construction, and the materials must be loaded in strict accordance with the mix proportion. When the mixture is mixed (not less than 90 s), the concrete mixture shall be transported to the pouring site without segregation and serious bleeding, or it shall be mixed again, If it still does not meet the requirements, it shall not be used. When pouring, if the drop is more than 2 meters, the chute must be used, and the vibration must be in place, without missing or excessive vibration. Urge and require the construction company to set settlement joints (expansion joints) according to the design and specifications. Whether the reinforcement in the reinforced concrete is cut and constructed according to the drawing. ② Surveying and setting out before trench excavation and backfilling, and whether the base soil quality after excavation is consistent with the design geological report, elevation control, and check whether the strength of concrete structures reaches the design or specification strength during backfilling; Whether there is operation with water, strictly control the water content of lime soil (reduce post construction settlement, speed up construction progress), ash content and compactness, and supervise whether the construction unit backfill and compact (tamp) in layers according to the design or specifications. In addition, the content of on-site supervision shall also include the witness and sampling of building materials (raw materials), the whole process tracking and supervision of new technology, new process, new materials, new equipment testing process, and the whole process tracking and supervision of other sites and processes that should be on-site as specified in the supervision contract: ①. Whether they comply with technical standards, specifications, procedures and approved design documents Construction organization design Whether qualified raw materials, components and parts (finished products, semi-finished products) and equipment are used. ③ Whether relevant on-site management personnel and quality inspection personnel of the construction unit are on duty. ④ Whether the technical level and operating conditions of the construction operators meet the requirements of the construction process, and whether the special operators work with certificates. ⑤ Whether the construction environment has adverse impact on the project quality. ⑥ Whether there are quality and safety hazards during construction. For major quality problems or potential safety hazards during construction, the site personnel shall take photos (video) to record them 6. Procedures and methods of site supervision 6.1 Procedures of site supervision (1) Carry out site technical disclosure to site supervisors and equip them with site supervision facilities. (2) Check the personnel, machinery, materials, construction scheme, safety measures of the construction unit and the quality inspection of the previous process. (3) When the site supervision conditions are available, the site supervision personnel shall carry out the site supervision work according to the contents of the site supervision, and make the site supervision records. (4) In the process of site supervision, the site supervision personnel shall timely report the construction quality and safety hazards found. (5) After the completion of site supervision, the site supervision personnel shall sign on the site supervision record. 6.2 Mode of on-site supervision: on-site supervision and inspection... about 56000 words

 Site supervision scheme for a municipal road project - Figure 1

Site supervision scheme for a municipal road project - Figure 1

 Site supervision scheme for a municipal road project - Figure 2

Site supervision scheme for a municipal road project - Figure 2

 Site supervision scheme for a municipal road project - Figure 3

Site supervision scheme for a municipal road project - Figure 3

 Site supervision scheme for a municipal road project - Figure 4

Site supervision scheme for a municipal road project - Figure 4

 Site supervision scheme for a municipal road project - Figure 5

Site supervision scheme for a municipal road project - Figure 5

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Provide written comments on relevant technical issues raised by the client and review the construction drawing documents of the project and submit the review report< 2> Construction stage: 1) Assist the client in relevant bidding work, including: assist in reviewing bidding documents, assist in signing construction contracts, material supply contracts, and supplementary agreements related to the project. 2) Be responsible for reviewing the qualification of subcontractors, including the detailed review and inspection of the qualification, supply capacity and business reputation of subcontractors or suppliers, and submit the review comments to the client. Participate in the confirmation of subcontractors and equipment suppliers selected by the Contractor. 3) Regularly track, manage and inspect the implementation of the construction contract (in case of special circumstances and emergencies, report to the client in the first time), and report to the client in writing. 4) Be responsible for calculating and reviewing the amount of each claim, submitting handling opinions, and assisting the client in handling contract disputes. 5) Review the project budget and final accounts submitted by the contractor, and increase or decrease the budget or final accounts according to the contract requirements and project conditions. 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This work shall be completed within 7 days after receiving the Contractor's application, and shall be reported to the Client for approval and confirmation in a timely manner. 8) Review and verify the price of adjustable materials, the performance price ratio, price difference and treatment method of relevant materials, and calculate and verify the relevant quantities and quantities in detail according to the specific situation. 9) According to the contract requirements and the supervision situation, review the settlement statement declared by the construction party and submit the review report to the client. 10) According to the requirements of the client and relevant contracts, review the annual, quarterly and monthly fund plans of the project prepared by the contractor, and supervise and control their implementation. 11) According to the requirements of the Client and relevant contracts, formulate the general schedule control plan and material and equipment procurement plan of the Project, and review the construction schedule of unit works submitted by the Contractor. 12) According to the general construction schedule, review the annual, quarterly, monthly and weekly schedule submitted by the contractor, supervise and control its implementation, and put forward adjustment suggestions and necessary instructions for the above plan when necessary. 13) Analyze the monthly dynamic report of work, materials and machines submitted by the contractor, find out the reasons affecting the progress, and propose corrective measures and instructions. 14) Review the material and equipment procurement plans of the client and contractor, put forward relevant suggestions and remedial measures, and issue relevant instructions. 15) Timely analyze progress obstacles, adjust the overall control schedule, report to the client, propose remedial measures, and issue corresponding instructions. 16) Review construction drawings and provide modification opinions, participate in joint review of drawings and design disclosure. 17) Review the construction organization design and construction technical scheme provided by the Contractor and supervise their implementation. 18) Confirm and accept the quality of materials, components, fittings and equipment selected by the Client and the Contractor, focus on quality control of materials and equipment that affect the use function and appearance of the project, and focus on checking whether the Contractor's mobilization materials, components, fittings and equipment violate the bidding commitment. 19) Be responsible for timely acceptance of mobilized materials and equipment, and conduct witness sampling of materials and equipment according to relevant requirements before use. Timely report the materials and equipment that affect the project quality to the client, and carry out on-site supervision of the whole process according to relevant regulations. 20) Urge contractors to establish and improve quality assurance system, improve construction technology management system and implement quality assurance measures. 21) Check the project quality, order the contractor who violates the design documents, specifications and procedures to correct immediately, and issue the project suspension order if necessary. After issuing the supervision notice to the contractor who violates the regulations, supervise the implementation of the corresponding rectification measures until the rectification is completed. 22) Do a good job in the supervision of the construction process. For the key problems that affect the quality in the construction of each stage and key parts, actively organize each construction unit to carefully analyze, find out solutions and supervise the implementation of the construction party, and do a good job in the review of the implementation effect to ensure the project quality; Carefully check and sign off on various concealed works, do a good job in the quality acceptance of divisional and subdivisional works, parts and processes of construction and installation works, and do not proceed to the next process without signing off. 23) Be responsible for handling engineering quality accidents, analyzing the causes and responsibilities of accidents, proposing accident handling methods, providing special reports to the client, and supervising and inspecting the implementation of accident handling plans. 24) The Contractor's request for design change shall be approved by the Supervisor in advance and submitted to the Client for confirmation. The Client shall propose to the Designer. After the Designer modifies the design and the Supervisor and the Client review and approve it, the Supervisor shall issue a notice of design change to the Contractor. The Designer shall modify the design scheme, which shall be reviewed by the Client and approved by the Client, and then issue the design change to the Contractor through the Supervisor. 25) The Supervisor shall be responsible for providing technical services for projects with new materials, new processes, new products and new technologies proposed by the Client. All new materials, new processes, new products and new technologies used by the Contractor shall be approved by the Supervisor and submitted to the Client for approval, and the Contractor shall be required to provide product identification instructions, product quality standards, instructions for use and process requirements, and the Supervisor shall accept them according to the quality standards. 26) Check the contractor's engineering and technical data, supervise the contractor to collect, sort out and archive the engineering and technical data, meet the requirements of Xiamen Urban Construction Archives Management, and complete the data submission and review within the time limit required by the client. 27) Be responsible for organizing relevant units to carry out project completion acceptance and putting forward project completion pre acceptance report. 28) Be responsible for contacting with the quality supervision department to verify the project quality, and organize the project handover as required by the client. 29) The supervision data shall be handed over to the client in complete volumes within one month after the completion acceptance of the project. 30) Supervise the construction safety in the whole process of the project, timely notify the contractor of any potential safety hazard, and urge the implementation of the rectification scheme. 31) Supervise the civilized construction on the construction site, timely notify the contractor of any uncivilized construction behavior or situation, and urge the contractor to rectify.
  • A person in Beijing Municipal roads Project supervision outline
    2.1 Project overview * * is located in * * District, Beijing. In order to restore the ancient capital around * *, the * * section was repaired** Duan starts from Di'anmenwai Street in the west and ends at * * Yanda Street in the east. The restoration of this project focuses on the restoration of the * * section (* *) river channel and the improvement of the environment, so that the area can reproduce the style of Beijing's historic and cultural city, and achieve the harmony and unity of history and modern times** The starting point is connected with the * * Haiqian Sea, which is divided into the south and north areas by the Di'anmen East Street. The north area retreats into the Sihai sewer of Ping'an Street, and the south area retreats into the sewer of * * along the street. The restored * * can be used as the outlet for the retreat of * * Haiwaiti Airport. While restoring the traditional urban style, it can reduce the pressure on flood control and drainage in the Six Seas area, ensure the safety of flood control in the urban center, and improve the local ecological environment. 2.1.1 The river course of this restoration project starts from Di'anmenwai Street in the west, passes through * * East Street in the southeast, and then reaches * * East Street in the east, with a total length of 1061 meters. The opening on the river course is 12 meters wide. A rubber dam is set in the front of the river course, and a butterfly valve and a drop well are set at the end of the south and north areas respectively. 2.1.2 Build a new river circulation and water purification system, and simultaneously implement the river landscape and greening and lighting works on both sides. 2.1.3 Hydrology * * Located in the urban area of Beijing, it has a temperate continental monsoon climate with four distinct seasons. The northwest wind prevails in winter, and the weather is cold and dry with little rain and snow. The southeast wind prevails in summer, and the weather is hot and rainy. The annual extreme maximum temperature is 39.7 ℃, the coldest in January and the hottest in July. According to the data statistics from 1956 to 2000, the average annual rainfall in the urban area is 602.5mm. The interannual variation of precipitation is large, with the maximum annual precipitation of 1261.8 mm (1959) and the minimum annual precipitation of 289.8 mm (1999). Rainfall is distributed unevenly in the year, mainly in the flood season (June to September), of which the precipitation in July and August accounts for 64% of the whole year. Due to the low rainfall and dry air, the humidity in the basin is low and the evaporation capacity is large. The annual average relative humidity is 58%, and the annual average water surface evaporation is about 1200 mm. 2.1.4 The engineering geological conditions are restored. The overall terrain on both sides of the river site is flat, and the general ground elevation is 45.01-47.50 m. The surface layer is an artificial fill layer with a general thickness of 3.5~4.9 m and a local thickness of more than 8.0 m, including clayey silt, silty clay fill, house slag soil, coal ash fill, crushed stone fill, etc. The artificially filled soil layer contains bricks, tiles, lime slag, etc. The newly deposited layer is below the artificial fill layer, and the layer top elevation is 41.45-43.00m below is grayish black~gray. The soft plastic medium dense layer contains organic clay, heavy silty clay and silty fine sand, and the maximum thickness of this layer is 4.0m. The Quaternary sedimentary layer is below the recent sedimentary layer. The top elevation of the layer is 38.90~40.70m below the brown yellow~brown yellow, medium dense silty clay, sandy silt and clayey silt. The maximum thickness of this layer is 4.2m. According to historical data, the highest groundwater level in 1659 is close to the natural ground, and the highest groundwater level elevation in recent 3-5 years is about 43.00~44.50 (including perched water). Groundwater is not corrosive to concrete structures, but it is weakly corrosive to reinforcement in reinforced concrete structures under alternate dry and wet conditions.
  • some Municipal roads Project supervision planning (concrete pavement)
    1. Project name: 2. Construction site: 3. Construction unit: 4. Design unit: 5. Supervision unit: 6. Construction unit: 7. Main contents of the project: road works: the structural layer of the motorway is 22cm thick C35 concrete, the base layer is 15cm thick 5% cement stabilized gravel layer, and the subbase layer is 25cm thick interstitial gravel layer; The structure layer of non motorway is 20cm thick C35 concrete, the base layer is 15cm thick 5% cement stabilized gravel layer, and the subbase layer is 22cm thick interstitial gravel layer; The pavement of sidewalk (without parking) is made of 6cm permeable bricks, 4Cm thick medium sand, and 15cm gravel sand filling; The pavement of sidewalk (parking) is made of 6cm permeable bricks, 4Cm thick medium sand, and 20cm thick gravel sand.
  • some Municipal roads Project supervision planning (flow chart attached)
    Xx Road and xx Road in Yudu County are located in the urban area of Yudu County. They are secondary trunk roads in the county. They are constructed by xxx Construction, designed by xxx Company in Ganzhou City, supervised by xxx Consulting Supervision Co., Ltd., and contracted by xxx Company. The total length is 1270 meters. The width of the road boundary line is divided into 20 meters and 24 meters. The drainage pipe is reinforced cement concrete culvert pipe, and the pavement is c30 cement macadam concrete.
  • Xiamen, Fujian Municipal roads Project supervision outline_
    No. 4 Road (south of * * * North Road, north of No. 7 Road), No. 5 Road (south of * * * North Road, north of No. 8 Road), No. 6 Road (south of * * * North Road, north of No. 8 Road), No. 7 Road (east of No. 4 Road), No. 8 Road (east of No. 4 Road) and Zhi'er Road. No. 4 Road is a Class II urban secondary trunk road, with a design speed of 30Km/h; No. 5 Road, No. 6 Road, No. 7 Road, No. 8 Road and Zhi'er Road are Grade II branch roads in the city, and the design driving speed is 20 Km/h. No. 4 Road is 24 meters wide, No. 5 Road, No. 7 Road, No. 8 Road and Zhi'er Road are 18 meters wide, and No. 6 Road is 12 meters wide; The pavement is asphalt concrete pavement; The design life is 15 years; Seismic fortification intensity: 7 degrees;
  • some Municipal roads Engineering fabric design scheme
    There are many villages and towns along the road, and the development and construction have taken shape. Therefore, the basic principle of coordination between the surrounding environment and the natural landscape is not to deteriorate the original environmental conditions after the construction of the expressway, and take corresponding measures to improve the surrounding environment.
  • some Municipal roads Project organization design scheme
    The living quarters are separated by 1.8m high plywood for maintenance to ensure civilized construction. A concrete mixing station is set on the east side of the camp, covering an area of 1000 m2, and the reinforcement and formwork are processed and placed on the green belt and sidewalk.
  • some Municipal roads Project construction organization scheme
    There are a large number of ditches, ponds and various types of hidden creeks that need to be replaced in the project site. According to the analysis of the current road engineering examples, the quality of ditch and creek filling is a common problem in the road engineering construction. The quality of ditch and creek filling is not up to standard, and the road often has large area of collapse, uneven settlement, a large number of cracks and cracks.
  • Jiangsu Municipal roads Project bidding documents
    This bidding project starts from West Outer Ring Road (already built) in the south and connects 01 Provincial Avenue (already built) in the north. The design stake number starts from 1+350-2+496.609, with a total length of 1146.609 meters and a width of 42 meters of red line. The road involves two existing rivers and two bridges.
  • so-and-so Municipal roads Emergency plan for flood control of the project
    It is revealed by drilling, and soil samples are taken for geotechnical test. The foundation soil of the site is mainly composed of cultivated soil, miscellaneous fill, silty medium liquid limit clay soil, medium sand, pebble soil and soil pebble from top to bottom.
  • some Municipal roads Engineering (bidding) construction equipment
    4. Case. According to the key projects and technical difficult projects that control the construction period, we should arrange the construction sequence and process connection of each specialty reasonably according to the priority and urgency, pay attention to the impact of rainy season, typhoon and other adverse weather on the construction, make overall plans, balance production, ensure the construction period, deliver and use on schedule, and give play to the investment benefits. 3. Ensure project quality and construction safety from the aspects of organization, construction scheme, mechanical equipment allocation, engineering material supply, etc.
  • some Municipal roads Engineering geotechnical investigation report
    ***Municipal Construction Investment Co., Ltd. is planning to build the municipal road project of * * * South Ring Road (Phase I and Phase II), which is located in the southwest of *******. The project is designed by * * * Design Institute, and our institute is responsible for the geotechnical engineering survey of the project. The proposed * * * South Ring Road (Phase I and Phase II) is a Class I main road in the city. Its starting point is connected with National Highway 324 (see the plan location of exploration points (1) for details). The coordinates are (X=23905.723, Y=14035.398). The road extends roughly from west to east. The design elevation of the pavement is 6.7 meters. At stake number k3+068.791, it crosses Yufeng South Road in a cross shape as the end point. The coordinates are (X=22891.952, Y=16806.284), The design elevation of the pavement is 4.1 meters, the whole line is 30000 meters long, the design subgrade width is 60 meters, it is cement concrete pavement, and the design slope is 0.300~0.574% (see the engineering geological profile for the design elevation of each section). There are 2 bridges and culverts in this section
  • A section of road Municipal roads Project supervision planning
    The work scope, objectives and basis of the supervision planning of road works shall be reconstructed according to the supervision commission contract.
  • Municipal roads Project supervision planning (Class III highway)
    <1> Project characteristics: 1. Project name: 2. Construction site: 3. Project overview:. 4. Project content: This project is a post disaster reconstruction of roads. Width of right of way Road class: Class III highway; Maximum longitudinal slope: the minimum radius of convex vertical curve at 0.739% 1 is 10000 m/1, and the minimum radius of concave vertical curve at 141.396 m/1 is 15000 m/2. Design speed: 40 Km/h, the length of vertical curve accounts for 28.21% of the route length. Calculation load of bridge and culvert: Class I highway; The width of the red line of the road is 10m, and the design of the pavement structure layer of the two carriageways is 3.5m each: the subbase layer is 15cm, the base layer is 20cm cement stabilized macadam, and the lower layer is fine grained asphalt concrete of AC-16C type. Drainage works of the project: gutter inlets: generally, combined double grate gutter inlets are used, and gutter inlets shall be added or adjusted at local low-lying areas of the cross road plate to facilitate the smooth flow of rainwater. Sidewalks: paved with C30 concrete precast colored bricks, the base course is 15 cm 5% cement stabilized macadam, and the curb is precast with C30 concrete. 5. Project characteristics: (1). Fund source: financial fund (2). Project investment: about 10000 yuan (excluding project change cost) (3). Contract duration: planned duration of each bid section: 300 calendar days
  • Municipal roads Project supervision planning (2012)
    Xx Road is located in the south of xx Road, Jianxi District, xx City. It starts from xx Road in the south and ends at xx Road in the north, with a total length of 577.883 meters. The total width of the designed road is 25m. The carriageway is 14 meters, and the sidewalks on both sides are 5.5 meters wide. The main contents of the project include road works, water supply and drainage works, strong and weak electricity, and street lamp works. 1、 Road works: the structural layers of the motorway are respectively 30 cm thick 12% lime soil, 18 cm thick lime soil, 18 cm thick cement stabilized macadam, 1 cm lower seal coat, 5 cm thick dense asphalt mixture (AC-16), and 3 cm thick dense asphalt mixture (AC-10) The structure layer of sidewalk is 15cm 12% lime soil, 10cm C10 concrete cushion, 2cm 1:3 cement mortar paved with Dutch bricks. 35 street lamps are set on both sides of the road. II. Water supply works: the main water supply pipeline is 9m east of the road centerline, using PE100 S5 series DN200 pipes, branch pipes DN150, 13 valve wells, and fire hydrants are SS100/65-1.6 ground type, a total of 5. 3、 Sewage pipeline works: the sewage pipeline is designed at 5m west of the road centerline. Φ 400 prefabricated reinforced concrete Grade II pipe is adopted for pipe diameter. 16 Ф 1250 inspection wells are used for the main pipeline. There are 11 Ф 1000 inspection wells for branch pipes. 4、 Rainwater pipeline works: the rainwater pipeline is designed at 5m to the east of the road centerline, and the pipe diameter is Φ 600 prefabricated reinforced concrete Grade II pipe. The passage pipe is Ф 500 pipe, and the gutter inlet is Ф 300 pipe. 14 Ф 1250 inspection wells are used for the main pipeline. There are 12 Ф 1000 inspection wells for branch pipes. 28 gutter inlets. 5、 Strong current system project: 1.0m × 1.2m half through cable trench is used in this project, and the center line is 1.0m away from the red line of the east road. The total length is 515m. Branches and crossing lines are laid with PE pipes. There are 5 branch boxes and 9 inspection ports. 6、 Weak current system works: the center line of weak current pipeline is buried 1.0m away from the red line of the west road. The total length is 528m, and there are 15 weak current wells. 7. Street lamp project: 35 street lamps are set on both sides of the road, and the distance between the street lamps and the road teeth is 0.5m. The specification of lamp holder is 1380 × 550 ㎜ c20 concrete. PVC buried pipe, buried depth 0.7m. One grounding electrode is set under each lamp pole
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