WBPWD/AE/GMPSD/NIeT-04/2026-27

Earth work in excavation of foundation trenches or drains, in all sorts of soil (including mixed soil but excluding laterite or sandstone) including removing, spreading or stacking the spoils within a lead of 75 m. as directed. The item includes necessary trimming the sides of trenches, levelling, dressing and ramming the bottom, bailing out water as required complete. (a) Depth of excavation not exceeding 1,500 mm.

Dismantling R.C. floor, roof, beams etc. including cutting rods and removing rubbish as directed within a lead of 75 m. including stacking of steel bars In ground floor including roof.

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 (c) 10 mm thick plaster

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.

Ordinary Cement concrete (mix 1:2:4) 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

(B) Dressed wood work in post , plate , battens . etc. fitted & fixed complete (excluding the cost of bolts only, but including the cost of nails, screws etc.) (The quantum should be corrected upto three decimals) (i) Sal : Siliguri

(b) Priming one coat on timber or plastered surface with synthetic oil bound primer of approved quality including smoothening surfaces by sand papering etc.

(A) Painting with best quality synthetic enamel paint of approved make and brand including smoothening surface by sand papering etc. including using of approved putty etc. on the surface, if necessary : (a) On timber or plastered surface : With other than hi-gloss of approved quality- (iv) Two coats (with any shade except white)

(b) On steel or other metal surface : With other than hi-gloss of approved quality- (iv) Two coats (with any shade except white)

Supplying, fitting and fixing single skin colour coated trapezoidal profile for wall cladding. Roof shall be made of 0.45 mm BMT (Base Material Thickness) (0.50 mm TCT (Total coated thickness excluding paint), G550 (min 550 yield strength), of Zincalume metalic coating (ISI 5965) with high solar reflectance index (SRI) value for better cooling as per thermatch technology, 1000 - 1015 mm effective cover width with five major corrugation, 28 mm high rib spaced at 203 mm c/c with subtle square fluting in the pan and the end rib shall have anti-capillery groove and return leg. The steel sheet shall be fastened with 40 micron zinc coated or 25 micron zinc - tin alloy coated, hex head self - drilling screw as per IS 3566 - 2002 class 3 fastener. The base steel shall be coated with zinc - alluminium alloy zincalume (AZ150) (i.e. 55% Al, 43.4 % Zinc, 1.6% Si) minimum of 150 g/m2 coating total on both sides, pre -painted with colourbond XRW (exterior roofing, walling) paint system of 35 micron Super Durable Polyster paint (SDP) with stable inorganic treatment with no lead contents confirming ISI 15965. The sheet shall be free from defects and have brand marking of the manufacturer giving product details on the back of the sheet at regular interval confirming genuinity of the material. (i) In Roof:- a) With 0.5 mm thick sheet