Request for Proposal (“RFP”) issued by NHIT Eastern Projects Private Limited (NEPPL) for Engagement of Agency/Firm for Repair & Rehabilitation work of Rigid Pavement works on four-lane of Chichra – Kharagpur Road (NH-49) (from km 185+150 to km 129+00) with a project length of 56.120 km in the state of West Bengal

Dismantling of Cement Concrete Pavement Scope of Work: Dismantling of cement concrete pavement by mechanical means using pneumatic tools, breaking it into pieces not exceeding 0.02 cu.m, stockpiling at designated locations, and disposing of both serviceable and unserviceable material separately within 1000 metres lead. Execution Requirements: 1) Mark dismantling area and barricade the site. 2) Break the pavement using pneumatic/mechanical tools into ≤0.02 cu.m pieces. 3) Stockpile reusable and non-reusable material separately. 4) Transport and stack materials within 1000 m lead. 5) Ensure site cleaning and safety throughout. Rate Inclusions:Includes labour, dismantling tools or machinery, cutting (if needed), excavation/backfilling (as applicable), transportation of materials within 1000 m, and stacking of reusable/unusable material separately. Includes all safety, environmental, and supervision-related requirements. Relevant Code / Specifications:MoRTH Clause 202 (Generalized)

Cement Concrete Pavement Scope of Work: Construction of unreinforced, dowel-jointed, plain cement concrete pavement over a prepared sub-base. The concrete shall be mixed in a batching plant, transported, laid using a fixed or slip-form paver, compacted, and finished as per line, level, and grade. The work includes joint construction, curing, and surface finishing for rigid pavement. Execution Requirements: 1) Use 43 Grade OPC cement @ 400 kg/m³ with coarse and fine aggregates conforming to IS:383. 2) Maximum coarse aggregate size shall be ≤ 25 mm; concrete mix shall achieve flexural strength ≥ 4.5 MPa at 28 days. 3) Concrete shall be mixed in a mechanical batching plant and transported to site. 4) Laid using mannual means, compacted, and finished as per design. 5) Apply curing compound and cure the surface for a minimum of 14 days. 6) Dirlling of hole at Existing PQC for Fixing of Dowel bar & Tie Bars. If Required to chairs shall be provided. no seprate payment shall be considered for chairs Rate Inclusions: The rate includes cost of all materials such as cement, fine and coarse aggregates, admixtures, curing compound, joint filler, sealant, batching, mixing, transport, laying , compaction, surface finishing, joint construction, curing, labour, equipment, safety measures, and quality control. Relevant Specification: MoRTH Clause 602

Providing and Placing Dowel Bars in Cement Concrete Pavement Scope of Work: Providing and placing mild steel dowel bars across transverse joints of cement concrete pavement to facilitate load transfer. The dowel bars shall be placed accurately in position with half the length de-bonded, using sleeves or approved debonding agents, as per approved drawings and specifications. Execution Requirements: 1) Use plain MS dowel bars of specified in IS:432 Part 1. 2) Apply de-bonding sleeve or bituminous paint on one-half length to allow movement during slab expansion/contraction. 3) Position bars using dowel bar chairs or alignment frames to maintain correct spacing and level. 4) Place dowel bars at mid-depth of slab and perpendicular to the joint line before concrete placement. 5) Ensure bars remain undisturbed during concrete compaction and casting. Rate Inclusions: The rate includes the cost of dowel bars, debonding sleeves or coatings, cutting, alignment devices, labour, tools, and all incidental works required for accurate placement. It also includes all safety provisions. Relevant Specification: MoRTH Clause 602.2.8

Providing and Placing Tie Bars in Cement Concrete Pavement Scope of Work: Providing and placing deformed steel tie bars across longitudinal joints in cement concrete pavement to maintain structural continuity and prevent joint separation. Tie bars shall be placed as per the dimensions, spacing, and alignment shown in approved drawings. Execution Requirements: 1) Use deformed steel bars conforming to IS:1786. 2) Place bars at mid-depth of slab, perpendicular to the longitudinal joint, at the specified spacing. 3) Position bars using bar chairs or fixing supports to maintain alignment before concrete placement. 4) Ensure bars are fully embedded and do not protrude or get disturbed during compaction. 5) Tie bars shall not be de-bonded and shall ensure proper anchorage on both sides of the joint. Rate Inclusions: The rate includes the cost of tie bars, cutting, bending (if required), positioning devices, labour, tools, equipment, and all incidental works required for proper placement. It also includes safety measures. Relevant Specification: MoRTH Clause 602.2.8

Repair of old Joints Sealant for Cement Concrete Pavement Joints Scope of Work: Providing and applying joint sealant in expansion, contraction, and longitudinal joints of cement concrete pavement. The work includes surface preparation, primer application, and pouring of approved hot-poured or cold-applied sealant into cleaned and dried joint grooves above the joint filler board. Execution Requirements: 1) Removal of Existing Old Sealant Joint 2)Clean joint grooves thoroughly using compressed air or wire brushes to remove dust and debris. 3) Apply an approved primer uniformly along the sides of the joint groove and allow it to dry as per manufacturer’s specifications. 4) Heat or prepare the sealant to the recommended temperature and consistency as specified. 5) Pour the sealant into joints ensuring full contact with groove walls and proper bonding, without voids or air pockets. 6) Finish the surface of the sealant flush with the pavement and protect it until set. Rate Inclusions: The rate includes the cost of all materials such as joint sealant, primer, tools for cleaning and application, heating, labour, and equipment required for proper sealing. It also covers all safety measuresand compliance with manufacturer. Relevant Specification: MoRTH Clause 602.2.10

Dowel & Tie Bar Panel Replacement (MT)

Dowel & Tie Bar Panel Replacement (MT)

Chainages

Chainages