WBPWD/AE/NRSH/NIT-29/2025-26_5

Earth work in excavation of foundation trenches or drains in all sorts of soil (including mixed soil but excluding laterite or sand stone) including removing, spreading or stacking the spoils within a lead of 75m. 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.

(b) Depth of excavation additional depth beyond 1,500 mm. and up to 3,000 mm. but not requiring shoring.

(b) For additional depth beyond 1.5 m. and up to 3.00 m.

Ordinary cement concrete (mix 1:2:4) with graded stone chips (20 mm nominal size) excluding shuttring and reinforcement, if any, in ground floor as per relevant IS codes.

(a) Pakur Variety.

Supplying & laying Double Wall Corrugated (with external annularcorrugation and smooth internal walls) High Density Polyethelene Pipesconforming to IS 16098 (Part-II):2013 having Stiffness Class of SN 8with Ring Stiffness not less than 8.00 KN/Sqm. and Impact ResistanceTIR value not more than 10% including necessary jointing materials fornon-pressure underground Drainage, Sewerage & Cross drainageapplication.

(vii) 600mm internal dia.

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

(i) Pakur Variety.

Constructing Inspection pit to a depth of 1.5 metre (inside), 250 mm thick 1st class brick work (1:4) in all sides over a layer of jhama brick soiling and 150 mm thick cement concrete with stone chips (1:3:6) including necessary earth work, fitting and fixing approved type S.W. master trap, constructing masonry invert with cement concrete (1:1.5:3) with stone chips, plastering inside and outside( outside upto 300 mm below G.L.) with 20 mm thick cement plastering (1:4) and neat cement punning, including, supplying, fitting and fixing one 560 mm dia. R.C.C. manhole cover of approved make with R.C.C slab of 100 mm thick with cement concrete (1:1.5:3) with stone chips including necessary rreinforcement(upto 1%) and shuttering and necessary corbelling brick work(1:4) so that the R.C.C. cover slab rests 150 mm above adjucent G.L., cement plaster(1:4) 10 mm thick on all external surfaces of the top slab as directed complete in all respect and remeval of surplus earth with all costs of labour and materials (excluding the cost of master trap only).900 mm X 750 mm(inside) chamber including fitting and fixing S.W. master trap of 150 mm dia. of approved make.

With Pakur variety. (SAIL/TATA/RINL)

Extra for additional depth beyond 1.5 metre.

For Pakur Variety

Supplying, fitting and fixing in position reinforced cement polymer concrete manhole/ gully pit cover with matching frame. As per I.S.-12592(M.D).

35 MT load bearing capacity round manhole cover provided with two lifter hooks fitted with mathing frame of size.Cover: 700 mm X 100 mm Frame: 900 mm X 200 mm Weight: 250 kg (approx).

(B) Filling in foundation or plinth by fine sand in layers not exceeding 150 mm. as directed and consolidating same by thorough saturation with water ramming complete . Including the cost of supply of sand .(payment to be made on measurement of finished quantity).

Do - by Fine Sand

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