1新版道路交通改道施工方案英.docx

1、1新版道路交通改道施工方案英 Method StatementDocument Title:Construction of Traffic Diversion RoadsDocument No.:EXW-P011-0000-CM-CHE-MT-00068 -Rev.CDName & SignaturePositionDatePrepared By:Technical EngineerReviewed By:Technical ManagerApproved By:Project ManagerRevision HistoryRevisionDateDetails of revisionCA27

2、-Apr-2014Submit for approval.CB28-May-2014Comply with the comments from Halcrow dated on 6-May-2014CC12-Oct-2014Comply with the comments from Halcrow dated on 23-Aug-2014CD20-Nov-2014Comply with the comments from Halcrow dated on 18-Oct-2014SectionCONTENTSPage1.0Purpose 32.0Scope of Work33.0Responsi

3、bilities34.0Permits and Licences35.0Sequence of Construction of Traffic Diversion Roads46.0Resources to be used for Construction of Traffic Diversion Roads46.1 Reference46.2 Control, Storage & Protection of Specific Materials57.0Detailed method of Carrying Out this Method Statement58.0Quality Contro

4、l and Requirements109.0Health & Safety Considerations109.1 General safety issues109.2 Emergency Arrangement119.3 Consents and Permits1110.0Environmental Considerations1210.1 Environmental Aspects1210.2 Housekeeping1211.0Appendices12Appendix A-Risk Assessment Appendix B-Tool Box Talk Appendix C-Inspe

5、ction and Test Plan Appendix D-Checklist Form Section 1.0: Purpose This method statement is to describe the procedure and techniques of construction of traffic diversion roads in a safe manner that will satisfy all the requirements.Section 2.0: Scope of WorkThis method statement describes the activi

6、ties related to traffic diversion roads, including site clearance(REF:EXW-P011-0000-CM-CHE-MT-00002), embankment(REF:EXW-P011-0000-CM-CHE-MT-00011、EXW-P011-0000-CM-CHE-MT-00006), sub-grade(REF:EXW-P011-0000-CM-CHE-MT-00011、EXW-P011-0000-CM-CHE-MT-00006), road base(REF:EXW-P011-0000-CM-CHE-MT-00025),

7、 asphalt work, installation of pole light(REF:EXW-P011-0000-CM-CHE-MT-00085), traffic signal(REF:EXW-P011-0000-CM-CHE-MT-00096), installation of sign board, safety barriers and road marking etc. These activities are covered in separated method statement.Section 3.0: ResponsibilitiesThe work will be

8、carried out by CHEC, headed by the Construction Manager.Construction Manager Partially responsible for the construction and arrangement of civil works, in charge of site engineer.HSE Engineer & HSE Officer Responsible for HSE on site during construction, coordinate with Site Engineer, infrastructure

9、 superintendent.QC Engineer Responsible for quality of structure on site during construction, coordinate with Site Engineer, request for Inspection and Testing processes and coordination with the Engineers Inspectors representative.Surveyor Responsible for survey work and settlement monitoring work

10、on site, coordinate with Site Engineer, the survey request process and coordination with the Engineers surveyor representative.Site Engineer Site engineer responsible for construction of work, coordinate with HSE Engineer, QA/QC engineer, surveyor, will in charge of foremen, operators, drivers, labo

11、urs, reports directly to construction manager, request for Inspection and Testing processes and coordination with the Engineers Inspectors representative, as well as supervisor.Foreman-Directly supervises the work activity on the site and has full control over the use of the labour, plant and equipm

12、ent. He ensures that the work is carried out in full compliance with the specification, and in a manner that conforms to the safety requirements. He reports to the Site Engineer when the work is complete and ready for inspection.All personnel (operators) should be qualified and the relevant certific

13、ate should be available.Section 4.0: Permits and LicencesWhere required as per project contract specification, permits & licences shall be obtained from relevant authorities prior to start with the related works or activities.Section 5.0: Sequence of Construction of Traffic Diversion RoadsThe sequen

14、ce of traffic diversion roads as shown in the following chart:Sequence of Traffic Diversion RoadsSection 6.0: Resources to be Used for Construction of Traffic Diversion Roads6.1 ReferencesQCS 2010HSE plan & Project quality plan approved by SC.Method statements which have been approved by Engineer:Me

15、thod statement of engineering survey: EXW-P011-0000-CM-CHE-MT-00001.Method statement of site demolition and clearance: EXW-P011-0000-CM-CHE-MT- 00002Method statement of soil filling and compaction for road works: EXW-P011-0000-CM-CHE-MT-00011Method statement of aggregate road base and sub-base: EXW-

16、P011-0000-CM-CHE-MT-00025Approved BC Type-1 and SC Type-1 design mixes.6.2 Control, Storage & Protection of Specific MaterialsMaterials shall be stored and handled as to assure the preservation of their quality and fitness for use in the works. Even after source approval has been given materials may

17、 again be inspected and tested before used in the work.Each shipment of materials is loaded, should be blocked and securely fasten to avoid damages during transportation.The important materials should be kept clean away from oil, grease, excessive heat and out of the direct rays of the sun.CHEC shal

18、l take all necessary protection measures in the storage, handling and stockpiling of materials to prevent contamination of material by test.Section 7.0: Detailed Method of Carrying Out this Method Statement7.1 Preparation prior to workAll equipments are tested and suitable for the current work.All t

19、he equipment, material, and personnel staff have been prepared in situ.All the equipments are functioning all time. Electrical power will be mainly supplied by generators. The generators will be available and placed close to the working area.7.2 Permit shall be obtained before commence of workAll ma

20、terials and mix designs shall be approved by Engineer prior to use in construction.All necessary Work permits shall be obtained prior to the commencement of any activity on the site. Personnel responsible for supervising the Works on site (Engineers/Forman) shall be aware of the permit to work syste

21、m and permit shall be valid throughout the entire duration of the operation.All equipment to be utilized on site shall have a valid Third Party Certificate.Competent personnel shall be responsible for lifting activities.7.3 Checking of underground utilitiesPrior to commence of works, underground uti

22、lities shall be checking according to as-built, underground detecting reports etc. If there is any underground utility in designed area, proper method shall be implemented to protect the utility.Work permit shall be given by specific authority prior to work if any underground utility could have been

23、 found on work site.7.4 Site Demolition and Clearance Refer to the latest method statement of site demolition and clearance (document no.: EXW-P011-0000-CM-CHE-MT-00002). 7.5 Soil Filling and Compaction for Road Works Refer to the latest method statement of soil filling and compaction for road works

24、 (document no.: EXW-P011-0000-CM-CHE-MT-00011).7.6 Aggregate road base Refer to the latest method statement of aggregate road base and sub-base (document no.: EXW-P011-0000-CM-CHE-MT-00025).7.7 Asphalt work7.7.1 Supply and Spray of Prime Coat:Prior to lay of the asphalt mix, prime coat of MC-70 medi

25、um curing cutback asphalt will be applied to an absorbent road base surface which will prepare a treated base as per QCS2010,Clause 5.12 in section 6. The Prime coat penetrates into the base and plugs the voids and hardens the top and helps hind it to lay it to the over laying asphalt course. Applic

26、ation of prime coat will be as follows:Prime coat will be sprayed over the prepared road base.The application rate will be between 0.75 and 1.00 lit/Sqm. and the application temperature will be between 60oC degree and 85oC degree.The prime coat will be cutback bitumen consisting of a 60/70 penetrati

27、on grade bitumen and kerosene. The residue from the distillation test, carried out to 360oC, shall be a minimum of 55 % (by volume), as determined by the difference method.If the surface is covered in wind-blown dust or fine aggregate then a power broom will be provided to remove the materials and c

28、lean the area before application of prime coat.The prime coat will be sprayed by well-equipped mechanical pump and mechanical distributor fixed with a tanker (truck). Blotter material will be spread from trucks operated backward so that the wheels will not travel in uncovered wet asphaltic material.

29、 When applying blotter material to an asphalt treated lane that adjoins a lane that has not been treated, a strip at least 200 mm wide along the adjoining edge will be left.The prime coat will be applied to 1/2 of the road width at a time and get a slight overlap of asphalt material along adjoining

30、edges of the lanes. Thick paper will be used to protect the previous application joints and other appurtenances.Traffic will not be permitted on the primed surface soon than 48 hours after spray of prime coat.Asphalt mix will be not permitted sooner than 2 hours after application of prime coat mater

31、ial. If there is any excessive blotter material, dirt or other objectionable materials, the surface irregularities will be corrected before the application of the asphalt mix.7.7.2 Supply and Laying of Base Course:The Asphalt BC Type -1 will be used as Base-course which will be mix according to QCS in a fully computerized Asphalt Mix plant. Asphalt Mix plant shall be approved by S