Exploratory drifting work of RDR-2 extension of 55m (40plus15)m length (1.8 M X 2.1M) size at Right bank of Kamala river at Kamala HE Project, Tamen, Arunachal Pradesh

Amount

Erection of Wooden Supports in drift including cost of materials,fitting and fixing in position complete with cost of all labour, T&P and transport as per directions of engineer-in-charge.

Excavation of drifts of size 1.8m(W)*2.1 m(H), rectangular section in all kinds of soil/hard rock,with disposal of excavated material in all leads and lifts, cost of all labours ,T&P, POL, explosive material and allied items, lighting & ventilation charges, and dewatering including transportation of explosive materials, all drifting equipments, T&P, POL & other accessories by mechanical & head load complete in all respect.

Approved overbreak (for item no.02 as mentioned above) beyond payline (10%)

Making Approach Path and Cutting of Steps in hilley terrain including cost of labour and T&P complete for 1.5 m wide path

Earth work in excavationin foundation and trenches in soils containing 50% or more of shingle or small size boulders upto 30cm size, lift upto 1.50 m amd stacking the excavated soil not more than 3 m clear from the edge of the excavation and returning the stacked soil in 15cm layers when required, into plinth, sides of foundation etc consolidating each deposited layer by ramming and watering and then disposing of all surplus excavated soil as directed within a lead of 50m.

Providing and laying cement concrete 1 : 3 : 6 (1 cement : 3 coarse sand : 6 graded stone aggregate 40 mm nominal size) excluding the cost of centring an shuttering in: a) Foundations and plinth.

Random rubble masonry with hard stone in foundations and plinth in cement mortar 1 : 6 (1 cement : 6 fine sand) including levelling up with cement concrete 1 : 6 : 12 (1 cement :6 coarse sand : 12 stone aggregate 20 mm nominal size) at plinth level.

Extra for random rubble masonry with hard stone in superstructure above plinth level and upto floor two level including levelling up with cement concrete1:6:12(1cement :6coarsesand: 12 stone aggregate/shingle 20 mm nominal size) at window sills, ceiling level and the like.( cost of superstructure including cost of foundation and plinth)

Centring and shuttering including strutting, propping etc and removal of form work for : a) Foundation, footings, bases of columns etc. and mass concrete.

Centring and shuttering including strutting proping etc. and removal of form work for Columns,pillars and piers.

Centring and shuttering including strutting,propping etc and removal of form work for Suspended floors, roofs, landings shelves and their supports, balconies and chjjas (3.5 m height).

Reinforcement cement concrete work in columns, pillars, piers,abutments, post and struts etc up to floor two level including finishing and plastering the exposed surface with cement mortar 1: 3 (1 cement :3fine sand) of thickness not exceeding 6 mm to give a smooth and even surface but exluding cost of centring, shuttering and reinforcement.

Reinforcement cement concrete work in columns, pillars, piers,abutments, post and struts etc up to floor two level including finishing and plastering the exposed surface with cement mortar 1: 3 (1 cement :3fine sand) of thickness not exceeding 6 mm to give a smooth and even surface but exluding cost of centring, shuttering and reinforcement.

Reinforced cement concrete in suspended floors, roofs, landings and balconies upto floor two level including finishing and plastering the exposed surface with cement mortar 1 : 3 (1 cement : 3 fine sand} of thickness not exceeding 6 mm to give a smooth and even surface but excluding cost of centring and shuttering and reinforcement with M20 (1 cement : 1.5 coarse sand : 3 stone aggregate 20 mm nominal size).

Reinforcement of RCC work including bending, binding and placing in position complete.

Removing mixed earth or rock slips including clearing the site within a lead of 50 m and upto 1.50 m lift. Details of cost for 1 Cu.m