Improvement of road from NH 108B to Upendra Sarkar house during the year 2025-26/ SH Box Cell, Retaining Wall, GSB, WBM-II, WBM-III, Prime Coat, Tack Coat, Carpeting, Seal Coat, etc. (L-1.052 km)

SH: Protection Work (Retaining wall & Toe wall)

Excavation for Structures A. Without dewatering Earthwork in excavation for structures as per drawing and MoRD technical specifications Clause 305.1 including setting out, construction of shoring & bracing, removal of stumps & other deleterious material and disposal upto a lead of 50 m, dressing of sides & bottom and backfilling in trenches with excavated suitable material. I. Ordinary Soil (i) Upto 3 m depth

Filling in foundation trenches as per drawing & MoRD technical specification Clause 305.3.9, 1200. I. Sand Filling

Providing concrete for plain concrete (using jhama brick aggregate) in open foundations complete including formwork as per drawings & MoRD technical specifications Clauses 802, 803, 900, 1202 and 1203. (including centering, shuttering, staging etc. but excluding reinforcement) (I) P.C.C grade M 10( using Jhama brick aggregate) (i) Nominal mix 1:3:6

Plain/reinforced cement concrete in substructure complete including formwork as per drawings & MoRD technical specification Clauses 802, 804, 805, 806, 807, 900, 1202 & 1204. (including centering, shuttering, staging etc. but excluding reinforcement) VI) R.C.C grade M-25 i) upto 5 m height

Supplying, fitting & placing Thermo-Mechanically treated bar/ Cold twisted deformed steel bar in substructure complete as per drawings & MoRD technical specification Clauses 1002, 1005, 1010 and 1202.

Providing & laying reinforced cement concrete in superstructure as per drawings & MoRD technical specifications Clauses 800, 900, 1205.4 & 1205.5 (including centering, shuttering, staging etc. but excluding reinforcement). II. R.C.C M 25 1. For height upto 5 m

Supplying, fitting, & placing Thermo-Mechanically treated bar/ Cold twisted deformed steel bar reinforcement in superstructure complete as per drawing & MoRD technical specifications Clauses 1002, 1010 & 1202.

Providing & laying filter media with jhama brick aggregates as per specification to a thickness of not less than 600 mm with smaller size towards the soil & bigger size towards the wall & providing over the entire surface behind abutment, wing wall, return wall to the full height, compacted to firm condition complete as per drawing and MoRD technical specification clause 1204.3.8.

Providing weep holes in brick masonry/ stone masonry, plain/ reinforced concrete abutment, wing wall, return wall with 100 mm dia AC pipe or uPVC pipe (110 mm OD of 6.0 kg/cm2 pressure) extending through the full width of the structures with slope of 1(V):20(H) towards drawing face complete as per drawing and MoRD technical specification clauses 614, 709, 1204.3.7.

Brick masonry work in cement mortar in foundation completed excluding pointing & plastering as per drawing & MoRD technical specifications Clauses 600, 1202 & 1203.

Plastering with cement mortar (1:4) 12 mm thick on brickwork/ C.C. work including a finishing coat of neat cement punning with 2.75 kg of cement per sqm in substructure as per MoRD technical specification Clauses 613.4 & 1204.

S.H: Granular Sub-bases, Bases (Non-Bituminous) and Shoulders

Granular Sub-base with Well Graded Material (Table 400.1) using Jhama Brick Aggregate (A) By Mix in Place Method Construction of granular sub-base by providing well graded material (Jhama Brick Aggregate, Grading-I, as per Table 400.1, spreading in uniform layers with tractor with attachments on prepared surface, mixing by mix in place method with rotavator at OMC, applying and brooming sand to fill up the interstices of coarse aggregate, watering and compacting with smooth wheel roller to achieve the desired density, complete as per MoRD Technical Specification Clause 401. (i) For Grading - I Material (jhama brick aggreate)

Water Bound Macadam Sub-Base / Base using Jhama Brick Aggragate 1) WBM Grading 2 Providing, laying, spreading and compacting jhama brick aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing rolling with three wheel roller 80-100 kN in stages to proper grade and camber, applying and brooming binding materials to fill up the interstices of coarse aggregate, watering and compacting to the required density Grading- 2 as per MoRD Technical Specification Clause 405. (A) By Manual Means

Water Bound Macadam Sub-Base / Base using Jhama Brick Aggragate 2) WBM Grading 3 Providing, laying, spreading and compacting jhama brick aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing rolling with three wheel roller 80-100 kN in stages to proper grade and camber, applying and brooming binding materials to fill up the interstices of coarse aggregate, watering and compacting to the required density Grading- 2 as per MoRD Technical Specification Clause 405. (A) By Manual Means

S.H: Bases and Surface Courses (Bituminous)

Prime Coat (i) Low porosity Providing and applying primer coat with bitumen emulsion (SS-1) on prepared surface of granular base including cleaning of road surface and spraying primer at the rate of 0.70- 1.00 kg/sqm using mechanical means as per MoRD Technical Specification Clause 502

Tack Coat iii. Providing and applying tack coat with bitumen emulsion (RS-1) using emulsion distributor at the rate of 0.25 to 0.30 kg per sqm on the prepared granular surface treated with primer & cleaned with Hydraulic broom as per MoRD Technical Specification Clause 503.

25 mm thick Open-Graded Premix Carpet using Bituminous (Viscosity grade/ modified bitumen) Binder Providing, laying and rolling of open-graded premix carpet of 25 mm thickness composed of 13.2 mm to 5.6 mm aggregates either using Viscosity grade bitumen or emulsion to required line, grade and level to serve as wearing course on a previously prepared base, including mixing in a suitable plant, laying and rolling with a three wheel 80 - 100 kN static roller capacity, finished to required level and grades to be followed by seal coat of either Type A or Type B or Type C or Type D as per MoRD Technical Specification Clause 508. Case - II By Mechanical Means (I) Bitumen of VG-30

Seal Coat Providing and laying seal coat sealing the voids in a bituminous surface laid to the specified levels, grade and cross fall using Type A or Type B or Type C or Type D as per MoRD Technical Specification Clause 510. A. By Manual Means Case - IV : Type D (premix with fine sand) (I) Bitumen of VG-30

S.H: Earthwork

Construction of Embankment with Material Obtained from Borrow Pits Construction of embankment with approved material obtained from borrow pits with a lift upto 1.5 m, transporting to site, spreading, grading to required slope and compacting to meet requirement of Tables 300.1 and 300.2 with a lead upto 1000 m as per MoRD Technical Specification Clause 301.5.

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