Important Points SOP (Standard Operating Procedure) During the Inspection of RCC NP4 Pipes

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Important Points SOP (Standard Operating Procedure) During the Inspection of RCC NP4 Pipes: -    Image-Hydro Test (Photo Credit: Ritesh Raj) (1.) Firstly, approved QAP will be checked.  (2.) ID marks should be marked on the inner and outer sides of pipes.  Image-ID Mark (Photo Credit: Ritesh Raj)  (3.) To check the inner and outer diameter of pipes.   (4.) Smooth finishing and before dispatch of RCC pipes cement slurry or grouting where required.   (5.) Load test is required for RCC pipes as per IS codes. It is different for each dia, of RCC pipes.  Image-Plate Load Test (Photo Credit: Ritesh Raj)   (6.) Concrete mix design checked and in which cement content, cement brand, and water-cement ratio should be checked.  (7.) The straightness test to be checked of RCC pipes through the straightness rods to collinear visible.   (8.) As per requirement 2% of hydro tests are to be checked as IS:458 of the total ordered quantity.  Image-Hydro Test (Pressure Release) (Photo Credit: Ritesh Raj)  
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Methodology for Trenchless Piping by Jack Pushing Method

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Methodology for Trenchless Piping by Jack Pushing Method

                     

Work Under Pit (Photo Credit: Ritesh Raj)

1.0 Purpose:

The Purpose of this procedure is to lay guidelines, requirement and to establish a method or a system to control the open cutting & trenchless activity.

 

2.0 Scope :

The Scope of the works covers the laying of RCC Pipe NP4 of 1000mm diameter on LHS of NH (NH No. will be mention) Road from (Chainage 1) to (Chainage 2) by using Trenchless Jack Pushing method.

 Also Read: Initial Setting Time of Cement

3.0 Methodology:

3.1 Survey

Alignment of Pipe Line to be marked from the position of Manhole to Manhole which is to be constructed.

3.2 List of Manpower:

·         Engineer                                  - As per Requirement

·         Safety Officer                          - As per Requirement

·         Supervisor                               - As per Requirement

·         Excavator Operator                 - As per Requirement

·         Hydra Operator                       - As per Requirement

·         Welder                                     - As per Requirement ( for Strutting and shoring)

·         Fitter                                        - As per Requirement (for Strutting and shoring)

·         Electrician                               - As per Requirement

·         Mechanic                                - As per Requirement

·         Rigger                                     -As per Requirement

·         Unskilled Labour                    - As per Requirement

     Also Read:-Consistency Test of Cement

                                        

Work Under Pit (Photo Credit: Ritesh Raj)


 3 List of Machinery:

·         JCB / Excavator Machine                                           - As per Requirement

·         Tracker Machine                                                        - As per Requirement

·         DG Set                                                                        - As per Requirement

·         Hydraulic Power Pack Machine for Jack Pushing -   - As per Requirement

·         Hydra                                                                         - As per Requirement

·         Dewatering Pump 10HP                                            - As per Requirement

·         Exhaust Fan                                                               - As per Requirement

·         Lighting Arrangement inside Pipe                             - As per Requirement

 

3.3 Procedure:

1. Underground Utilities to be checked with tracking machine before start of the work. If any Underground facility found then it is to be informed to concern authority and change in alignment to be initiated and approved by the competent authority.

2. After checking with Tracking Machine and if there are no underground utilities or alignment approved, the marking of Manhole to be done on both ends and marking to be done on the ground for the underground piping.

3. Area to be properly barricaded with the steel barricading/ proper barricading and if diversion is to be made then the board of Diversion to be installed at both ends.

3. Entry Pit is to be excavated to the sufficient capacity so that RCC Pipe line of ----- meter (mentioned in drawing)length can be laid through this entry point by jack pushing method.

4. After Pit excavation the proper Strutting and Shoring to be done with Steel material

5. Inside the excavated pit, the RCC wall to be constructed on opposite direction of pipe pushing for support of jack resting.

Work Under Pit (Photo Credit: Ritesh Raj)



Also Read:- Aggregate Impact Value Test

6. Pushing of RCC Pipe to be started after that with Hydraulic Power Pack Machine from 100mm to 250mm(and mentioned in specifications) and manually excavation of soil in pushing alignment with crow bar and pixels and disposal of soil outside of pit by the use of Hydra machine.

 7. Activity of Pushing and Manual excavation inside of pipe to be done in tandem.

8. Arrangement of proper lighting and exhaust to be done for proper working inside of pipe line

8. Alignment & Level of pipe to be checked with Tracker Machine.

9. With the pushing and manual excavation method the pipe line to be laid up to the next manhole.

Also Read: Elongation Test of an Aggregate

10. Then the RCC Wall made inside of the entry pit to be demolished.

11. Construction of Manhole as per the procedure to be done in the excavated entry pit.

12. Backfilling in layers and proper Compaction shall be done up to the existing ground level.

13. By this way the work will go on from the entry point of next manhole.


 

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Written By-
Ritesh Raj

Email Id-rajritesh.motiharirr@gmail.com


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