Chennai Metro Update: Tender invited for utility identification including various work from Nathamuni Ramp to Kolathur Ramp for corridor-5

Chennai Metro Rail Limited (CMRL) has invited digitally signed open e-tender through e-procurement portal for Utility identification including barricading, trial trenching, excavation, shoring, exposing the utilities, disposal of muck, trench backfilling & compaction, preparation of as-built drawings and other associated works for the Phase-2, corridor-5, CP06/UG06 package from Nathamuni Ramp to Kolathur Ramp which include Five (5) underground stations and Two (2) Ramps.

  • Tender Reference Number: CMRL/P2-UG06/UI-RT01/2022
  • Name of Work: Utility identification including barricading, trial trenching, excavation, shoring, exposing the utilities, disposal of muck, trench backfilling & compaction, preparation of as-built drawings and other associated works for the Phase-2, corridor-5, CP06/UG06 package from Nathamuni Ramp to Kolathur Ramp which include Five (5) underground stations and Two (2) Ramps.
  • Approximate value of Work: INR 69 Lakhs
  • EMD: INR 69 Thousand
  • Duration of Contract: 120 Days
  • Document Download / Sale Start Date: 16th November, 2022
  • Document Download / Sale End Date: 08th December, 2022
  • Pre Bid Meeting Date: 22nd November, 2022
  • Bid Submission Start Date: 01st December, 2022
  • Bid Submission End Date: 08th December, 2022
  • Bid Opening Date: 09th December, 2022

Scope of Work:

  • Supply, installation, multiple re-erecting, and maintenance of Barricading boards for complete contract duration and after the contact. Design of barricading including structural sections, painting design, Logo, safety provision etc will be issued by CMRL.
  • Excavation in all types of soil, rock, footpath, bitumen road, concrete road, medians, etc., of size 1.5m(W) X 3.0m(D) trench as per drawings or as directed by the Employer / Engineer. The scope includes the cutting of all types of road surfaces, shoring, backfilling with available earth and 90% compaction with respect to the original state.
  • Disposal / Utilization of surplus excavated soil is as per contractor own arrangement / choice including loading, transporting, unloading inclusive of all lifts and leads with all necessary environmental and safety compliances.
  • Identification of underground utilities including but not limited to Sewer lines, Water lines, Gas lines, Electrical Cables, OFC cables, Storm water drain, location of Inspection chambers, invert level, flow direction, bypass connections, etc.
  • Preparation of as-built drawings including coordinates of the Utilities, submission of reports and drawings (Hard and Soft copy) endorsed by the utility owner/s.
  • Protection of existing utilities and repair / rectification works in case of damage during the contract period shall be the responsibility of the contractor

Survey:

  • The Contractor shall, at his own expense, provide and maintain survey stations which he may require to carry out the works and shall remove the same on completion of the works.
  • The Contractor shall, at his own expense, carry out all the necessary surveys, measurements and setting out of the works and shall for this purpose engage qualified and competent engineering surveyors whose names and qualifications shall be submitted to the Engineer for his approval.
  • The Contractor shall for the purpose of checking the survey and setting out, provide to the Engineer all the assistance, which he may require. The surveyor shall be selected having appropriate experience and as far as possible, the same surveyor shall be provided throughout the contract period.
  • Before commencing any work at any locations, the Contractor shall give the Engineer not less than two days’ notice of his intention to set out or give levels for any part of the work in order that arrangements may be made for Inspection.
  • The Contractor shall provide for the sole use of the Engineer and his staff, all necessary survey instruments and other equipment and all technicians, labour and attendants which the Engineer may require for checking the setting out and marking of the Works.
  • The Contractor shall maintain in good working order at all time during the period of contract the instruments provided by him, for the proper setting out of the works. The Contractor shall make available at his own expense, any poles, staging templates.

Power to Vary Work:

  • The description of work required to be executed by the Contractor are set forth in the specification, schedules and in the drawings, but the Engineer reserves the power to vary, extend or diminish the quantities of Work, to alter the line, level, or position of any work to increase, change or decrease the size, quantity, description, character or kind of any Work, to order the Contractor to execute the Works or any part thereof, by day or night Work, or to add or to take from the Work included in the contract as he may think proper without violating the contract and the Contractor shall not have any claim upon the Employer for any such variation, extension, diminution, alteration, increase, change or decrease other than for the Work actually done, calculated according to the prices Bided and accepted in this contract.

Barricading:

  • The manhole / trench shall be barricaded (Iron Barricading arrangements) on all four sides. The Contractor who has dug up the trench shall be responsible for any mishap, which may occur.
  • Non-barricading of trenches by the Contractor shall be liable for a fine of Rs.500/- per day, per location from the interim payment certificates prepared in accordance with Sub Clause 60.2 of the conditions of particular application.
  • Such deduction will not relieve the Contractor of any liability or duty under the Contract. Work areas shall be barricaded to the satisfaction of the Employer in accordance with Special Conditions of the Contract (part 2).

Clearing Site:

  • Preliminary work is required to be done before laying of pipes including pegging out, clearing and disposal of shrubs, grasses, bushes, hedges, boulders, debris from the route. This shall also include the removal of stumps, etc. or parts thereof lying along the alignment of pipe.
  • The Contractor should inform the Engineer in charge before removing shrubs, grasses, etc. well in advance. The alignment of the mains shall be so fixed as to avoid cutting of any trees.

Removal of Topsoil, Shrubs and other Vegetation:

  • All shrubs, vegetation and other plants shall be removed and cleared from the selected stretch of the site. All debris and unsuitable material up to a depth of 30cm between ground level or road level shall be removed.
  • All debris and unsuitable material shall be carted away from the site as per the direction of CMRL or Board Engineer up to a distance of 10 kms.

Utilities Protection:

  • All utility lines and structures, whether indicated on the drawings or not, which are to remain in service shall be protected by the contractor from any damage likely to result from his operations.
  • Relocation wherever necessary will be done by the respective Service Departments on payment by CMRL separately. No extra payment will be made for minor relocation, which does not require dislocation from existing conditions and shifting to other location.
  • In such a condition, the service lines shall be pushed slightly to facilitate laying of main and brought back to original position after the work is completed wherever necessary.
  • The service lines should be supported at bottom with planks, posts, etc. and tied with ropes properly. Any damage to any utility resulting from the  Contractor’s operations shall be repaired at the Contractor’s expense.

Dismantling of Existing Structures:

  • The structure shall be dismantled carefully, and materials removed without causing damage to the serviceable material to be salvaged, the part of the structure to be retained and any properties of structures nearby.
  • Any avoidable damage to the articles to be salvaged and part of the structure shall be made good by the Contractor without extra claims. The Contractor shall be responsible for any injury to the lookers or the public. Structure should be removed 45cm below Ground and the portion which in any way comes within new construction shall be removed entirely.
  • Contractor shall maintain register or the salvaged material, which shall have signature of the Engineer on entries made. All the material obtained from the removed structure shall be the property of the client.
  • Serviceable materials shall be stacked neatly in such a manner as to avoid deterioration at site or at other places. Non-serviceable materials shall be disposed of by the Contractor without causing any inconvenience.
  • All rubbish shall be cleared off the site and the Ground let clean and clear and Rubbish and non-serviceable materials shall be carted away upto a distance of 10kms as per the direction of CMRL Engineer.

About CMRL:

  • The Chennai Metro is a rapid transit system serving the city of Chennai, Tamil Nadu, India. The Chennai Metro Rail Limited (CMRL), a joint venture between Government of India and the Government of Tamil Nadu, operates the Chennai Metro. It is the third longest metro system in India after Delhi Metro and Hyderabad metro.
  • The Phase-I of Chennai Metro Rail project covers a length of 45.046 km network and consists of two corridors i.e. Corridor-I (Blue Line) – From Washermenpet to Airport (23.085 Km), Corridor -2(Green Line) – From Chennai Central to St. Thomas Mount (21.961 km).
  • About 55% of the corridors in Phase-I are underground and the remaining elevated. Out of 32 nos of stations 13 nos are elevated stations and the remaining 19 nos are underground stations.
  • Inter corridor interchange stations are available at Alandur (Elevated) station and Chennai Central (Underground) station respectively. The system commenced service in 2015 after partially opening the first phase of the project.

The complete documents can be downloaded from http://eprocure.gov.in/eprocure/app


Source: CMRL- Tender | Image Credit (representational): CMRL