WBIW/EE/KCD2/eNIT-04/2026-27. (Sl No.-29)

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 25 cm. 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. Ordinary soil / local soil / soil mixed with moorum or kankar / silt, dry or moist / slushy silt / sticky soil.

Extra rate over Item Nos.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

Earthwork from borrow pits over existing embankment or for repairs to embankment, closing breaches etc. within an initial lead of 30 metre and lift of 1.50 metre including breaking clods and depositing the same in layers not exceeding 25 cm. and rough dressing etc. complete as per profile.

Cast-In-situ cement concrete blocks or lining units ar per designed section and specification in nominal mix proportion 1:1.5:3 (Corresponding to M20 grade) with well graded 20 mm down stone metal aggregate, laid in position by casting in alternative panels or othersise to keep a gap of 12 mm between the adjuscent units, over a layer of polythene sheet of thickness not less than 100 µm to act as a separator between the bottom surafce 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 adjucent units by 5.6 mm down coarse aggregate to be compacted properly with all leads and lifts including supply and carriages of all materials without the cost of sand cushion/filter (The rate is exclusive of the cost of stone aggregate and its carriage upto site. Construction wing has to add the cost of same from the SoR of PW(Roads) to derive the consolidated rate. Consumption chart of the USoR may be used for assessing the quantity of coarse aggregates per cum of concrete). Stone aggregate of pakur or Rajamahal or Broken stone of North bengal varieties.

Hire and labour charges for shuttering with centering and necessary staging upto 4 m using approved stout props and thick hard wood planks of approved thickness with required bracing for concrete slabs, beams and columns, lintels curved or straight including fitting, fixing and striking out after completion of works (upto roof of ground floor) 25 mm to 30 mm shuttering without staging in foundation

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. Pakur variety

Sand filling in foundation trenches and at the back of abutments, wing-walls etc. with good local sand free 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.

Supplying and laying Polythene Sheet (150gm / sq.m.) over damp proof course or below flooring or roof terracing or in foundation or in foundation trenches.