Dismantling and re construction of adit plugging at adit III of the Umrong water conductor system of Kopili Power Station KHEP Umrangso

Amount

Demolishing of stone rubble masonry in the adit tunnel including all tools, plants, labours, materials reqired by drill, mechanical, manual, or conventional method etc. as per technical specification, construction drawing including transpotation & disposal of unserviciable demolished materials to outside tunnel at suitable area and as directed stacking of serviceable materials at suitable location outside tunnel including all leads and lifts as directed by Engineer in chrage.

Demolishing and Dismantling of concrete /RCC work of existing adit-III tunnel pugging complete in all respect including all tools, plants, labours, materials reqired by drill, mechanical, manual, or conventional method etc. as per technical specification, construction drawing including transpotation & disposal of unserviciable demolished materials to outside tunnel at suitable area and as directed by the Enginner Incharge including dewatering if necessary.

Supplying, fitting and fixing in position reinforcement bars conforming to relevant I.S. Code for R.C.C. work/ R.B. walling including straightening, cleaning, cutting and bending to proper shapes and length as per details, supplying and binding with 20G annealed black wire and placing in position with proper blocks, supports, chairs, spacers etc. complete. a) From Primary Producer: TATA/SAIL/Esser Steel/ Jindal steel/Shyam steel/RINL .(i)Super Ductile (SD) TMT reinforcement bars

RCC Work with Shuttering Providing and laying plain/reinforced cement croncrete works of M-20 ( 1:1.5:3) grade using proper admixture, plasticiser cement, coarse sand & 20mm down graded stone aggregate with cost of necessary form work including dewatering if necessary, and curing for reinforced cement concrete work complete as directed (Reinforcement will be measured and paid separately) .(II) Using Batching Plant/ RMC/ Truck mounted batching plant including Transit Mixer and Concrete Pump in back filling of steel liner and plugging of the adit-III

Drilling of 25/32mm dia hole in conrete lining/ rock upto depth of 5.00 from the tunnel

Cement grouting (Consolidation/ contact) upto adit location including all materials, labour, T & P materials, carriage of cement from central store/ department store khep . (excluding cost of cement) etc. complete as directed.( cement will be supplied by the corporation)

Welding and plugging of grout holes with suitable materials.

Stone masonary work in retaining wall, wing wall, abutment, foundation, steps, plinth etc. in cement mortar in prop 1:3 with levelling course of 1:2:4 with both faces hammer dressed including bonding, providing face stone, through stone and centering including racking of joints, curing and supplying and all carriage of stone as directed including payment of forest royalty and sales tax and carriage. (b) Coarse Rubble Masonry in Adit Plugging