WBIW/EE-I/LDCD/e-NIT-05/26-27 Sl 1

Dismantling of existing structures such as culverts, bridges, retaining walls and other structures comprising masonry, cement concrete, woodwork and steelwork, including provision of T&P, scaffolding and staging wherever necessary; sorting of dismantled materials; disposal of unserviceable materials and stacking of serviceable materials, complete with all lifts and lead up to 1000 metres, in accordance with the requirements of MORT&H Specification Clause 202. 1(i) Lime /Cement Concrete I.By Manual Means 1(i)I.A Cement Concrete Grade M-15 & M-20

Earth work in excavation of foundation of structures as per drawing and technical specification, including setting out, construction of shoring and bracing, removal of stumps and other deleterious matter, dressing of sides and bottom and backfilling with approved material (Reference to MORT&H's specification 304). 1(I) Ordinary soil 1(I)A Manual Means 1(I) A(i) Depth upto 3 m

Supplying Jhaw / Eucalyptus bullah piles at work site, including dressing and making one end pointed. (iii) 15 cm av. Diameter Note: Diameter of pile to be measured at a distance of 1.5m from the thicker end

Labour for driving Jhaw / Eucalyptus bullah piles by monkey in all sorts of soil including hoisting and placing piles in position, protecting the pile head with iron ring and cutting and shaping heads before and after driving and including hire and labour for necessary driving appliances and all tackles (iii) 15 cm av. diameter

Plain/Reinforced cement concrete in sub-structure complete all including vibrating and compacting, finishing, curing, sampling, testing etc. by mechanically mixed as per drawing and Technical Specifications (Reference to MORT&H's specifications 1500, 1700 & 2200). E) RCC Grade M20 5E(p) Height upto 5 m Case I- Using concrete Mixer

Supplying, binding, fixing etc. including initial straightening, cutting to requisite length, hooking and bending to correct shape, placing in proper position of uncoated HYSD reinforcement bar in sub-structure complete as per drawing and Technical Specifications (Reference to MORT&H's specifications 1600 & 2200).

Making filter with well graded 40 mm down ballasts and laying uniformly behind weep holes, below pitching on bed, side slopes including supply and carriage of all materials to site including preparing bed with earthwork up to 30 cm depth, where necessary and compacting with wooden malllet after laying to achieve designed section as per direction of the Engineer- in - Charge (measurements will be on finished work / in stack after deducting necessary void). (a) Jhama ballast

Cast-in-situ cement concrete blocks or lining units as per designed section and specification, in nominal mix 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 other wise to keep agap of 12 mm between the adjacent units, over a layer of polythene sheet of thickness not less than 100 um to act as a separator 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 bu trowelwithout adding any additional cement and sand mortar, curing and filling the gaps between the adjacent units by 5.6 mm down coarse aggregate to be compacted properly, with all leads and lifts including supply and carriage of all materials, complete, without the cost of filter. Stone aggregates of Pakur or Rajmahal or Broken stone of North Bengal varities

Supply of Brick Bats at site.

Supply of Fine Sand at site.