Request for Proposal (“RFP”) issued by NHIT Western Projects Private Limited (NWPPL) for Engagement of Agency/Firm for Reinforced cement concrete (RCC) pipes Drain Works at Bijoliya on four-lane of Chittorgarh-Kota Road Section of NH-27 (project length – 160.50 kms.) in the state of Rajasthan.

Earth work in excavation in foundation trenches etc. .in drains and channels etc. not exceeding 2m.depth, including dressing of bottom and sides of trenches, stacking the excavated soil 3m Clear from the edge of excavation including disposal of surplus soil as directed within a lead of 1000 meters [MoRTH Specification : Clause 301,304] 3.14.3.2- Hard Rock

PCC M-15 grade leveling course below & above N.P.4 pipe complete as per drawing and MoRTH specifications clause 14.10.

Providing and laying reinforced cement concrete pipes N.P.4 for culverts including jointing ends and fixing collar with cement mortar 1:2 [MoRTH Specification : Clause : 1000/2900] 9.15.3- 900 mm Dia

Providing and constructing RCC Inspection Chamber of internal dimensions 1.0 m × 1.0 m (clear inside), with 150 mm thick RCC raft, 150 mm thick RCC walls, and 150 mm thick RCC cover slab, including all necessary miscellaneous works, complete as specified.

Earth filling with surplus soil excavated from foundation and taken only from outside of building plinth in 15cm compacted layers, including ramming watering and consolidation, lead up to 30 meters [MoRTH Specification : Clause 301,304]. 3.13.1 Ordinary Soil

Description of Works

Excavation for Structures in Hard Rock (Blasting Prohibited) - Mechanical Means Scope of Work : Excavation in hard rock where blasting is not permitted, performed using mechanical means such as hydraulic breakers, chisels, or rock splitters, as per Clause 301.3.5. The work includes excavation to the required formation level, trimming, and safe disposal. Execution Requirements: 1) Demarcate excavation area and depth per drawings. 2) Break rock using non-blasting methods: hydraulic breakers, splitters, or wedges. 3) Remove unstable shales or other unsuitable material encountered at the formation level. 4) Excavate up to formation level or deeper if required (max 500 mm below as per Clause 301.3.5). 5) Remove loose rock fragments and dress side slopes to design. 6) Dispose excavated rock and debris away from the site or as directed. 7) Maintain slope stability and follow environmental & vibration control measures. Rate Inclusion : Includes cost of all equipment (breakers, splitters, excavators), fuel, operators, dressing, loading, transportation, disposal, site safety, vibration/noise control, and compliance with environmental regulations. Relevant Code / Specifications: MoRTH Clause 301.3.5

Plain Cement Concrete M-15 Grade in Open Foundation All charges for supply & placing of Plain Cement Concrete (M-15 grade) in open foundations as per approved drawings and technical specifications, conforming to MoRTH Sections 1500, 1700, and 2200. The concrete shall be batched using a batch mix plant, ensuring uniformity and consistent quality. The mix shall use aggregates of size not exceeding 20 mm, with a workable slump suitable for PCC. Concrete placement shall ensure a free-fall height of less than 1.5 m to prevent segregation, compacted using mechanical vibrators to achieve proper consolidation. The work includes the preparation of the foundation surface, leveling, placing concrete, and finishing exposed surfaces to achieve the required levels and smoothness. Adequate curing, as per approved methods, shall be carried out for at least 7 days to attain the desired strength. The rate shall include all costs associated with labor, material, machinery, batching, transporting, placing, compacting, curing, sampling, testing, and incidental works. Shuttering costs, where required.

Providing and laying reinforced cement concrete pipes N.P.4 (900 mm Dia)- Providing and laying reinforced cement concrete pipes N.P.4 for culverts including jointing ends and fixing collar with cement mortar 1:2 [MoRTH Specification : Clause : 1000/2900] 9.15.3- 900 mm Dia

RCC Grade M30 - All Charge for supply and placing of reinforcement Cement Concrete M-30 Grade With Batching Plant, With Batching Plant, Transit Mixer and Manual placing Reinforced Cement Concrete in Foundation Scope of Work: Construction of Reinforced Cement Concrete (RCC) in open foundation for Culvert. Execution Requirements: 1) Excavation and preparation of foundation bed to required level. 2) Placement of formwork and concrete as per mix design. 3) Use of mechanical vibrators for compaction. 4) Surface finishing and proper curing for a minimum of 7 days. Rate Inclusions: Includes cost of all materials (cement, aggregate where applicable), labour, machinery, formwork, mixing, placing, compacting, finishing, curing, and all safety provisions. Relevant Specification: MoRTH Clause 1700

Reinforcement Steel: All charges for providing, cutting, bending, transporting, and tying reinforcement steel of designation TMT FE 500 as per IS 1786 for construction work. The vendor shall supply all necessary steel and 18 gauge black annealed binding wire. Reinforcement steel bars are to be cut, bent, and tied per approved bar bending schedules and structural drawings, ensuring precise dimensions and placements. Steel bars shall be securely tied at all intersections using 18-gauge black annealed binding wire to maintain stability during concrete placement. Laps shall conform to MoRTH specifications and as directed in drawings, with no separate payment for laps or overlaps as per MoRTH Clause 1600. Proper clear cover shall be maintained with spacers and chairs as per drawings and CPWD standards. Steel will be measured by weight in kilograms, excluding binding wire and without allowances for overlaps or wastage. The scope of work includes supply, handling, and on-site quality assurance for positioning, alignment, and compliance with specifications and as directed by EIC. Safety measures and quality checks shall be implemented during all stages, ensuring high-standard reinforcement for structural integrity. Reinforcement bars from the approved make shall only be used.

Description

Excavation

Chamber

Description

Walls

Steel

Description

Raft Bottom bar & Top bar