CONSTRUCTION OF RCC FOOT BRIDGE OVER BALUCHERRA RIVER AT HALAMPARA KALIBARI OF WEST DAMCHERRA VC UNDER DAMCHERRA R.D. BLOCK DURING THE YEAR 2025-26.

Earthwork in excavation for structures as per drawing and technical specifications Clause 305.1 including setting out, dewatering, construction of shoring, shuttering & 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.

Backfilling behind abutment, wing wall & return wall complete as per drawings & MoRD technical specification Clause 1204.3.8. I) Sandy material

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 & 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 and laying cement concrete wearing course M 30 grade including reinforcement complete as per drawings & MoRD technical specifications Clauses 800 & 1206.3 (including centering, shuttering, staging etc. and reinforcement).

Reinforced Cement Concrete M 25 grade approach slab including reinforcement & formwork complete as per drawing & MoRD technical specifications Clauses 800 & 1211 (including centering, shuttering, staging etc. and reinforcement)

Brick soling i) Brick on edge soling Providing and laying brick on edge soling layer on prepared subgrade according to lines, grades and cross-section shown on the drawing, filling joints with sand, watering and rolling the same with three wheeled road roller 80-100 kN as per MoRD Technical Specification Clause 412.

Single bamboo palasiding/walling of whole 2nd class bamboo (Jati or Bethua) 65 to 75 mm dia and closely packed & driven @ 150 mm c/c including fitting fixing with half bamboo kamis horizontally in three rows with cane or tying with wire complete and struts 1.5 m apart longitudinally and providing bitumen drum sheet walling fixed with nails as per drawing and MoRD technical specification Clause 1302.5. Driven at least 900 mm below ground and 1200 mm above ground on average

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.

Providing and laying of apron with cement concrete blocks of size as per Table 1300.1 cast-in-situ and made with nominal mix of M-15 grade cement concrete (using jhama brick aggregate)as per drawing and MoRD technical specification Clause 1301 (rate includes preparation of bed, nominal surface re-inforcement and filling of granular material in recesses between blocks).

Bored Cast-in-Situ piles 500 mm dia, M-25 grade RCC pile excluding reinforcement complete as per drawing and technical specification and removal of excavated earth with all lifts and lead upto 1000 m as per MoRT&H specification clause 1100, 1200, 1500, 1700.

Dismantling of Structures Dismantling of existing structures like culverts, bridges, retaining walls and other structure comprising of masonry, cement concrete, wood work, steel work, including T&P and scaffolding whenever necessary, sorting the dismantled material, disposal of unserviceable material and stacking the serviceable material with all lifts and upto a lead of 1000 m as per MoRD Technical Specification Clause 202. (II) By Mechanical Means B) Reinforced Cement Concrete

Providing and fitting, fixing double layer split muli bamboo tatti lining in position as per drawing and specification.

Supplying ballies 100 mm dia well dressed and making shoe with end tappered upto 300 mm from the bottom including marking length and part of a metre as per drawing and specification. ii) 3rd class local wood Ballies

Handling and driving ballies of 100 mm dia upto the length required by heavy hammer as per drawing and specification.

Providing and fitting, fixing ballies of 100 mm dia for horizontal, diagonal bracing, strut etc. with nails/ spikes and binding wire (GI 2.0 mm) as per drawing and specification. ii) 3rd class local wood Ballies

Preparation and consolidation of sub grade with power road roller of 8 to 12 tonne capacity after excavating earth to an average of 22.5 cm depth, dressing to camber and consolidating with road roller including making good the undulations etc. and re-rolling the sub grade and disposal of surplus earth with lead upto 50 metres as per direction of the of the Engineer-in-Charge.

1700 Painting on Steel Surfaces Providing and applying two coats of ready mix paint including primer coat of approved brand on steel surface after through cleaning of surface to give an even shade as per drawing and MoRD Technical Specification Clause 1701.

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