WBIW/CTU/CE(SW) /e-NIT- 29 (e)/2025-26 SL01

Earthwork in excavation in the canals /drainage channels/ borrow pits/ River bed/slope of bank as noted below as per designed section & throwing the spoils in layers of 25cm. for making banks as per profile or to deposit the same in any other place within an initial lead of 30 metre and initial lift of 1.5 metre including breaking clods, rough dressing etc. complete as per direction of the Engineer-in-charge. (a) Ordinary soil/ local soil/ soil mixed with moorum or kankar/silt, dry or moist / slushy silt / sticky soil.

Extra rate over Item No. 1 for all kinds of soil for every additional lift of 1.50 metre or part thereof beyond the initial lift of 1.50 metre.

Earth work in excavation of foundation of structures as per drawing and technical specification, including setting out, removing, spreading or stacking of spoils within a lead of 150 m. as directed and including trimming the sides of the trenches, leveling, dressing and ramming the bottom, and backfilling with approved material complete as per direction of the Engineer-in-Charge I. In all sorts of soil excluding marshy soil & rocks ( soft 0r hard ) by mnual means. a) upto 3 m depth. (iv) Without pumping out water and shoring.

Sand filling in foundation trenches and at the back of abutments, wing-walls etc. with good local sandfree from earth in layers not exceeding 15 cm.including inundating each layer by profuse water and poking and ramming layer by layer complete including supply of sand. Quality of sand is to be approved by the Engineer-in-charge. Compaction factor of dry clean sand is 0.835.

Precast cement concrete blocks or lining units as per designed sections and specifications, in nominal mix proportion 1:1.5:3 (corresponding to M20 Grade) with well graded 20 mm down stone metal aggregate, including dressing, ramming, shuttering, finishing the surface by trowel without adding any additional cement and sand mortar, curing, transporting and laying the blocks or lining units at worksite in position over sand cushion/ filter layer, with cold (paper) joints between the adjacent units having gap varing from 0 to 5 mm as tolerance, with all leads and lifts, including supply and carriage of all materials complete. (Stone Aggregate of Pakur or Rajmahal,or broken stone of North Bengal varieties) Note:provisions of the latest departmental manual for lining in Irrigation Canals are to be followed ,when ever applicable.

Cast-in-situ cement concrete blocks or lining units as per designed section and specification, in normal mix propotion 1:1.5:3 (corrsponding to M20 grade with well graded 20 mm down stone metal aggregate, laid in position by casting in alternative panels or otherwise to keep a gap of 12mm between the adjacent units, over a layer of polythene sheet of thickness not less than 100 to act as aseperator between the bottom surface of the block and the sand cushion/filter material laid below the blocks ,including dressing , ramming, shuttering, finishing the exposed surface by trowel without adding any additional cement and sand mortar ,curing and filling the gaps between the adjacent units by 5.6mm down coarse aggregate to be compacted properly, with all leads and lifts including supply and carriage of all materials, complete, without the cost of sand cushion/filter. (Stone Aggregate of Pakur or Rajmahal,or broken stone of North Bengal varieties) Note:provisions of the latest departmental manual for lining in Irrigation Canals are to be followed ,when ever applicable.

Hire and labour charges for Shuttering with or without staging upto 4.0 m height using approved stout props with wooden planks/ply wood/steel sheet plate with required bracing for any kind of plain or reinforced concrete works in all sorts of minor structure including culvert, box culvert, crossdrain etc. The rate is inclusive of fitting, fixing and striking out after completion of work as per specification and direction. (b) Where staging is not required.

Water Bound Macadam Sub Base by consolidating Jhama metal / Laterite chelly or stone metal / shingles of specific size in hard crust to requisite thickness (measured after compaction) in layers including screening of metals etc. as necessary, hand packing, sweeping, watering and rolling in stages with power roller to proper line, grade and camber, lighting, guarding & barricading and making necessary earthen bundh of one metre width on each side where necessary to protect edges and preparing the bed by necessary cutting or filling and rolling all complete including the cost of all materials and hire and labour charges of all men and machineries and compacting to the required density, as per Clause 404 of Specifications for Road & Bridge Works of MoRT&H (5th Revision). (ii) For Construction of Sub Base by consolidating Laterite (90 mm to 45 mm):

Supplying, spreading and consolidating Moorum to a depth of 75 mm at desired density and C.B.R. as per specification with power roller to proper gradient and camber including watering as necessary, and lighting, guarding, barricading and making adequate earthen bundh where necessary to protect the edges and curing with water for 2 to 3 days, mending cracks by rolling where necessary including all incidental charges of roller, cost of fuel & lubricants etc. complete as per specification. Note: The compaction factor may be taken as 0.67. (The payment is to be made on the basis of the finished compacted volume of moorum.)

Providing and erecting direction and place identification retro- reflectorised sign as per IRC :67 made of high intensity grade sheeting vide clause 801.3, fixed over aluminium sheeting, 2 mm thick with area exceeding 0.9 sqm supported on a mild steel angle iron post 75 mm x 75 mm x 6 mm, 2 Nos.firmly fixed to the ground by means of properly designed foundation with M 15 grade cement concrete 45 cm x 45 cm x 60 cm, 60 cm below ground level as per approved drawing and Clause 801 of Specifications for Road & Bridge Works of MoRT&H (5th Revision).

NP-2 R.C.C.Spun Pipes Supplying Class NP-2 R.C.C. Spun Pipes

collar (15.00Cm Dia) Supplying Class NP-2 R.C.C. Spun Pipes Collar

Laying of R.C.C. pipe with collar, lowering the same into the trench laying on the bed in trenches in prescribed gradient, depth and alignment, filling the end grooves with necessary bitumastic compound, filling caulking space with tarred gasket or with rubber gasket of appropriate size & covering with cement mortar (1:2) & testing the joints etc. complete as per drawing, specification including carriage of pipes from site stacks to the place of laying etc. & as per direction of the Engineer-in-charge. (Payment to be made on the basis of actual finished length of the pipe line). 15.00Cm Dia

Plaster (to wall, floor, ceiling etc.) with sand and cement mortar including rounding off or chamfering corners as directed and raking out joints including throating, nosing and drip course, scaffolding/staging where necessary (Ground floor).[Excluding cost of chipping over concrete surface] (ii) With 1:4 cement mortar a) 20 mm. Thick Plaster

Neat cement punning about 1.5mm thick in wall,dado,window sill,floor etc. NOTE:Cement 0.152 cu.m per100 sq.m.

Ordinary Cement concrete (mix 1:1.5:3) with graded stone chips (20 mm nominal size) excluding shuttering and reinforcement if any, in ground floor as per relevant IS codes. a) Pakur Variety (Analysed rate)

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