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Piling work method statement cm- ms- bw - 002

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Piling work method statement cm- ms- bw - 002

  1. 1. Doc. Title Method Statement of Piling Works for Buildings TOA-TOYO JOINT VENTURE Doc. No CM - MS – BW - 002 Rev. No. 0 Date July,2010 Construction of Port Facilities and Buildings for Cai Mep International Container Terminal CAI MEP INTERNATIONAL CONTAINER TERMINAL METHOD STATEMENT OF PILING WORKS FOR BUILDINGS Page 1
  2. 2. Doc. Title Method Statement of Piling Works for Buildings TOA-TOYO JOINT VENTURE Doc. No CM - MS – BW - 002 Rev. No. 0 Date July,2010 Construction of Port Facilities and Buildings for Cai Mep International Container Terminal TABLE OF CONTENTS 1. General…………………………………………………………… 2 2. Scope of Works…………………………………………………... 2 3. Reference Technical Specification ………………………………. 2 4. Reference Drawings……………………………………………..... 2 5. Specification of Piling Machine…………………………………... 2 6. Piling Schedule……………………………………………………. 2 7. Equipment and manpower list…………………………………… 2 7.1. Equipment………………………………………………………… 3 7.2. Labors…………………………………………………………….. 5 8. General Flow Chart Of Piling Work……………………………… 6 9. Piling Procedure…………………………………………………... 7 10. Piling by Diesel Hammer…………………………………………. 8 10.1 Driving Lower Segment PHC Pile………………………………... 8 10.2 Splicing Work……………………………………………………... 9 10.3 Driving Upper Segment PHC Pile……………………………….... 9 11. Pile Driving Record………………………………………………. 10 12. Pile Dynamic Analyzer…………………………………………... 11 13. Quality Control………………………………………………….... 11 13.1. Inspection of Fabrication ……………………………………….... 11 13.2. Inspection of Welding Work……………………………………... 11 14. Safety Control…………………………………………………...... 12 15. Appendixes……………………………………………………….. 13 Page 2
  3. 3. Doc. Title Method Statement of Piling Works for Buildings TOA-TOYO JOINT VENTURE Doc. No CM - MS – BW - 002 Rev. No. 0 Date July,2010 Construction of Port Facilities and Buildings for Cai Mep International Container Terminal 1. General : This Method Statement for PHC and the solid pile, piling work procedure of buildings for CAI MEP INTERNATIONAL CONTAINER TERMINAL PROJECT is to demonstrate the process of driving these piles in compliance with all the required specifications, standards, and proper construction procedures governing the pile driving works for the building foundation of the project. 2. Scope Of Works : Execution and supply of PHC and square solid piles, setting piles location before driving, driving and all necessary engineering works could be categorized as follows: Type of piles are PHC pile type A, (Ø 600 mm, Ø500mm), and 400mmx400mm solid square piles. 3. Reference Technical Specifications : Technical Specification: Part 4B, Division 2 – Piling Works for Buildings. 4. Reference Drawing List : Attached in Appendix B 5. Specification and Certificate of Piling Machine Specification of piling machine and crane operation certificate: Attached in Appendix C 6. Piling Schedule : Attached in Appendix E Page 3
  4. 4. Doc. Title Method Statement of Piling Works for Buildings TOA-TOYO JOINT VENTURE Doc. No CM - MS – BW - 002 Rev. No. 0 Date July,2010 Construction of Port Facilities and Buildings for Cai Mep International Container Terminal 7. Equipment & Manpower List: 7.1. Equipment to Be Used: The Equipment to be used for pile driving works is summarized in Table 7.1 Table 7.1 List of Equipment No Equipment Specification Quantity Capacity 1 Diesel Pile Hammer KOBELCO K35/K25 1 5T KOBELCO 2 Diesel Pile Hammer K35/DELMAG D 25 1 5T 3 Diesel Pile Hammer HERA3500/D25C 1 5T 4 Diesel Pile Hammer KOBELKO K45/KB60 MITSUBISHI MB 70 1 4.5T,6T,7T 5 Crane Truck Model: LS78 1 35T 6 Crane Truck Model: DH 350 1 35T 7 Theodolite Japan Made 04 100% precise 8 Survey Equipment US Made 1 100% precise 9 Automatic Level Japan Made 2 100% precise TOTAL→ 13 7.2. Labors To Be Deployed: Labors and/or trades to be deployed for PHC piling work is summarized in Table 7.2 Page 4
  5. 5. Doc. Title Method Statement of Piling Works for Buildings TOA-TOYO JOINT VENTURE Doc. No CM - MS – BW - 002 Rev. No. 0 Date July,2010 Construction of Port Facilities and Buildings for Cai Mep International Container Terminal Table 7.2- List of labors Description Quantity Remark Engineer 3 Foreman 3 Piling operator 3 Workers 12 Welders 6 Surveyor 4 Crane operator 2 TOTAL→ 33 8. General Flow Chart Of Piling Work: General Flow Chart: Page 5
  6. 6. Doc. Title Method Statement of Piling Works for Buildings TOA-TOYO JOINT VENTURE Doc. No CM - MS – BW - 002 Rev. No. 0 Date July,2010 Construction of Port Facilities and Buildings for Cai Mep International Container Terminal Mobilization of Piling Machine Lifting the upper segment PHC pile and Splicing Driving the upper PHC pile (Middle/Top) 9. Piling Procedure  PHC Piles D600mm, D500mm and Solid 400mmx400mm will be plant fabricated and transported to the site by a Trailer truck and by barge. They will be Page 6 Delivery of PHC Pile by Barge & Trailer Truck for Building Lifting the lower segment PHC pile by Crane then mount Diesel Hammer Driving the lower segment PHC pile Confirm the bearing capacity by evaluating penetration during driving Finish
  7. 7. Doc. Title Method Statement of Piling Works for Buildings TOA-TOYO JOINT VENTURE Doc. No CM - MS – BW - 002 Rev. No. 0 Date July,2010 Construction of Port Facilities and Buildings for Cai Mep International Container Terminal supported by bedding timbers placed directly under the positions of lifting hooks (Shown in Figure 1).  Piles will be stored carefully on flat ground within the temporary yard and a maximum of three (3) layers per stock pile is required.  Pile markings should be carried out to every pile segments to check the rough penetration per hammer blow. Bottom segment piles will be marked at every 1.0m pitch, middle segments, and top segments will be marked every 20cm pitch.  Material delivery dockets, receipts and physical inspection report shall be submitted to the Engineer. TRUCK CRANE TRAILER PHC PILE 0. 2L 0. 6L 0. 2L Figure 1: Transportation of PHC Pile Sand Bag Sand Bag TIMBER PHC PILE 0. 2L E R 0. 2L 0. 2L Figure 2: Storage of PHC Pile 10.Piling By Diesel Hammer : Page 7
  8. 8. Doc. Title Method Statement of Piling Works for Buildings TOA-TOYO JOINT VENTURE Doc. No CM - MS – BW - 002 Rev. No. 0 Date July,2010 Construction of Port Facilities and Buildings for Cai Mep International Container Terminal The piles will be driven by diesel hammer. The driving will be stopped after confirming the bearing capacity. (Shown in Figure 2) PILE UNDER DRIVING CENTER LINE OF PILE PILE DRIVER TRANSIT/PLUMB BOB SURVEYER SURVEYER DIESEL HAMMER VI NG DR I I ON RE C T DI TRANSIT/PLUMB BOB Figure 2: Pile Driving 10.1. Driving Lower Segment PHC Pile:  Crane will lift up the lower segment PHC Pile near the piling machine. The PHC pile will be held along leader of diesel hammer. Lifting position shall be 0.2L of pile length. ( lower than cracking moment)  The pile position will be adjusted by moving the leader until its top coincides with the hammer then mount the cap on the pile top. Before start driving, vertical position of the pile will be checked carefully by total station or theodolite to confirm its verticality. 10.2. Splicing Work: Page 8
  9. 9. Doc. Title Method Statement of Piling Works for Buildings TOA-TOYO JOINT VENTURE Doc. No CM - MS – BW - 002 Rev. No. 0 Date July,2010 Construction of Port Facilities and Buildings for Cai Mep International Container Terminal  Prior to splicing, welding surfaces will be cleaned and free from rust, oil, water and other foreign elements that would affect welded joints.  After driving lower segment, the upper segment will be lifted by piling machine, set above the lower segment coincide their centers directly and aligned vertically then fixed the clamp to maintain its alignment. Inclination tolerance shall be checked by split level, and it should be less than 1.0cm/1.0m)  . Splices will be made by butt welding, using arc welding performed 2G position and in accordance to WPS (Welding Position Standard) for welding.  Visual and NDT inspection check will be conducted to every welding joint done. Figure 3 UPPER PILE 10.3Driving Upper Segment PHC Pile: Top segment shall be driven after obtaining the PDA test results for correction factor from Hailey’s formula  Driving will be complete after confirming the sufficient bearing capacity, from Hailey’ s formula shown below with reference to PDA Test results. Page 9 PILE DRIVER DIESEL HAMMER HELMET LOWER PILE 1) DRIVING OF LOWER PILE 2) CLEANING OF PILE HEAD 3) SPLICING 4) RESUMING OF DRIVING
  10. 10. Doc. Title Method Statement of Piling Works for Buildings TOA-TOYO JOINT VENTURE Doc. No CM - MS – BW - 002 Rev. No. 0 Date July,2010 Construction of Port Facilities and Buildings for Cai Mep International Container Terminal  If it is found that the bearing capacity is still insufficient obtained from rebound record against design, the pile should be extended and re-driven until the bearing capacity is reached. Ru = 9.81 (Ef.MR.H) x MR + e 2 .MP S+0.5(C1+C2+C3) MR + MP = A In which: Ru : Ultimate Resistance, KN MR: Weight of ram, Kg H : Drop height of hammer, mm Ef : Efficiency of fall of hammer MP: Weight of pile + helmet, Kg e : Coefficient of restitution [ e = (S+{C₁+C₂+C₃}÷2 x PDA)/(Ef x MR x H) ] C1: Elastic deformation of pile, mm C2: Elastic deformation of ground, mm C3: Elastic deformation of pile head cushion, mm (here C3 = 2 mm). S : average penetration, in mm per blow for at least the last 10 blows RP: Correction Factor (RP = S.L.T. / A) (Use rebound record- Attached Appendix F)  The result of Pile driving and bearing capacity shall be confirmed by the Engineer and the records of pile installation shall be submitted to the Engineer.  In case the pile tip can not reach the design level due to unforeseen hard layer, this matter will be reported to the Engineer.  If piles cannot be driven to the design level but has already attained the required bearing capacity, the driving shall be stopped in accordance to specification and Engineer’s instruction to avoid buckling or cracking of the pile.  Pile head treatment shall be done after getting Engineer’s approval. 11. Pile Record:  Before final setting of the piles, the rebound shall be recorded. Page 10 x RP
  11. 11. Doc. Title Method Statement of Piling Works for Buildings TOA-TOYO JOINT VENTURE Doc. No CM - MS – BW - 002 Rev. No. 0 Date July,2010 Construction of Port Facilities and Buildings for Cai Mep International Container Terminal  The pile driving is deemed completed after confirmation of the sufficient bearing capacity against design. Bearing capacity for all piles will be calculated with formula. 12. Pile Dynamic Analyzer (PDA)  Pile Dynamic Analysis will be conducted to confirm the pile capacities and to decide the correction factor of Hiley’s formula. PDA test provides more information, about Skin resistance distribution, Toe resistance, simulated static load-settlement relationship, pile integrity, stresses in the pile during the blow. PDA test shall be conducted by Engineer 13. Quality Control 13.1. Inspection of Fabrication  Before fabrication PHC and square Pile materials such as, cement, sand, gravel, reinforcing bars, tendon wires and etc, will be inspected on Factory before fabrication, and finished product will again be inspected before delivery to the site.  The inspection report shall be submitted before piles will be delivered on site. When PHC and square piles arrives on site/stockyard, these will be inspected again for its, physical conditions, quantity and quality in accordance with specification or standards listed below: - Length tolerance: ±3% - Outside diameter tolerance: +7mm/-4mm - Wall thickness tolerance: +unspecified/-0mm - Cracking: no crack  The quality control and inspection report will be submitted to the Engineer. 13.2. Inspection of Welding Work.  Prior to the welding, the grooved face and its adjacent areas shall be completely free from oil, paint, oxide, water and all other foreign materials.  Welding rod will be stored in a dry and humid place to keep its required temperature. Only welding rod approved by the Engineer will be used on the splicing of pile. Page 11
  12. 12. Doc. Title Method Statement of Piling Works for Buildings TOA-TOYO JOINT VENTURE Doc. No CM - MS – BW - 002 Rev. No. 0 Date July,2010 Construction of Port Facilities and Buildings for Cai Mep International Container Terminal  Piles are jointed with their end plates evenly around its diameter, welding must be carried out in accordance with manufacture’s instruction and must be checked before driving resumes. Piles welding splice will be tested by NDT test. Basically all weld joints shall be tested by NDT but reducing option will be proposed depending on the quality of test obtained on the previous welded joints. (Refer to attached form in Appendix F) (1) Crack Inspection of Welding There shall be no cracks in or near the weld beads. The inspection shall be carried out by visual and Non Destructive test (NDT). (2) Inspection of Bead Surface and Shape Visual inspection of bead surface and shape shall be done by the process listed below. a. Pits on bead surface Butt joints shall be free of weld pits on the bead surface. b. Flatness of bead There shall be no height difference exceeding 3mm within 25mm length of a bead. c. Undercut The depth of undercut shall not exceed 0.3mm. d. Overlap There shall be no overlap.  During driving, the pile head will be protected by helmet of cast steel or mild steel fitted closely around the pile. Packing (cushion) timber, covering the head of pile, will be placed on the pile and will be replaced as often as necessary to prevent damage to the piles. 14. Safety Control:  Prior to commencement of any activities, the contractor will ensure all safety work practices and requirements for the different operations and are made informed and strictly complied at all times. Page 12
  13. 13. Doc. Title Method Statement of Piling Works for Buildings TOA-TOYO JOINT VENTURE Doc. No CM - MS – BW - 002 Rev. No. 0 Date July,2010 Construction of Port Facilities and Buildings for Cai Mep International Container Terminal The following steps are strictly checked before and during working. 1. Equipment and machine efficiency checking prior to operation. 2. Grand condition 3. Tool box meeting 15. Appendices: Appendix A: Organizational Chart Appendix B: Ref. Drawings List Appendix C: Specification and Certificate of Piling Machine Appendix D: Fabrication Schedule Appendix E: Pile Driving Schedule Appendix F: Pile Driving & Welding splicing Form Appendix G: Checklist for PHC Pile Manufacturing Appendix H: Inspection and Test PLan Page 13
  14. 14. Doc. Title Method Statement of Piling Works for Buildings TOA-TOYO JOINT VENTURE Doc. No CM - MS – BW - 002 Rev. No. 0 Date July,2010 Construction of Port Facilities and Buildings for Cai Mep International Container Terminal Appendix A: Organizational Chart TOA-TOYO JV Site Manager Engineer & Safety Pile Transportation Team Item No Title Numbers Remarks 1 Site Manager 2 2 Engineer/Safety 3 3 Foreman 3 4 Operator 3 5 Welder 6 6 Worker 12 7 Surveyor 4 Total→ 33 Page 14 Piling Rig-2 Team-2 Piling Rig-1 Team-1
  15. 15. Doc. Title Method Statement of Piling Works for Buildings TOA-TOYO JOINT VENTURE Doc. No CM - MS – BW - 002 Rev. No. 0 Date July,2010 Construction of Port Facilities and Buildings for Cai Mep International Container Terminal Appendix B: Ref. Drawing List: Page 15
  16. 16. Doc. Title Method Statement of Piling Works for Buildings TOA-TOYO JOINT VENTURE Doc. No CM - MS – BW - 002 Rev. No. 0 Date July,2010 Construction of Port Facilities and Buildings for Cai Mep International Container Terminal Appendix C: Specification and Certificate of Piling Machine Page 16
  17. 17. Doc. Title Method Statement of Piling Works for Buildings TOA-TOYO JOINT VENTURE Doc. No CM - MS – BW - 002 Rev. No. 0 Date July,2010 Construction of Port Facilities and Buildings for Cai Mep International Container Terminal Appendix D: Pile Fabrication Schedule Page 17
  18. 18. Doc. Title Method Statement of Piling Works for Buildings TOA-TOYO JOINT VENTURE Doc. No CM - MS – BW - 002 Rev. No. 0 Date July,2010 Construction of Port Facilities and Buildings for Cai Mep International Container Terminal Appendix E: Pile Driving Schedule Page 18
  19. 19. Doc. Title Method Statement of Piling Works for Buildings TOA-TOYO JOINT VENTURE Doc. No CM - MS – BW - 002 Rev. No. 0 Date July,2010 Construction of Port Facilities and Buildings for Cai Mep International Container Terminal Appendix F: Pile Driving & Welding splicing Form Page 19
  20. 20. Doc. Title Method Statement of Piling Works for Buildings TOA-TOYO JOINT VENTURE Doc. No CM - MS – BW - 002 Rev. No. 0 Date July,2010 Construction of Port Facilities and Buildings for Cai Mep International Container Terminal Appendix G: Checklist for PHC Pile Manufacturing Page 20
  21. 21. Doc. Title Method Statement of Piling Works for Buildings TOA-TOYO JOINT VENTURE Doc. No CM - MS – BW - 002 Rev. No. 0 Date July,2010 Construction of Port Facilities and Buildings for Cai Mep International Container Terminal Appendix H: Inspection and Test Plan Page 21

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