Providing Protection Measures Against Shooting and Falling of Stones in the Vicinity of TRT from RD 2500 up to the Portal of the Right Bank Tunnel Part 2 70 Meters Stretch

Surface dressing of the ground including removing vegetation and in-equalities not exceeding 15 cm deep and disposal of rubbish, lead upto 50 m and lift upto 1.5 m in -All kinds of soil.

Surface preparation of rock slopes/faces by scaling and removing all loose, fractured, or projecting rock pieces to an average depth of 0.3 m using manual methods with scaling bars, pry bars, and other hand tools as required. The work shall include the cleaning of the scaled surface, and ensuring a safe and stable rock face. Rate to be inclusive of all labor, T&P, safety measures for working at heights, and disposal of all resulting debris to a lead of 50m as directed by the Engineer-in-Charge.

Supply, installation and fixing of 32 mm dia self-drilling rock anchors at 2.0 m c/c (staggered pattern), of required length ensuring a minimum of 3.0 m anchorage inside the rock, complete as per approved drawings and technical specifications. The item includes drilling through overburden and rock strata, insertion and grouting of self-drilling anchors using cement grout of specified mix, provision of bearing plates, nuts, couplers and accessories, along with cost of all materials, labour, machinery, ventilation, lighting, drainage, testing and all ancillary operations required for proper completion of work, all as per approved design and direction of Engineer-in-Charge.

Providing weep holes/Seepage Holes of Size 50mm -60 mm dia by drilling in existing Plain / Reinforced Concrete/Rock /Shotcrete , fitted with 50-60mm dia. UPVC perforated pipe extending through the full Length of the hole using wagon drill or other suitable drilling equipment’s, as directed to specified depth including cost of all materials, machinery, labour, cleaning holes, ventilation, lighting, Drainage and all other ancillary operations etc. complete (5m c/c)

Steel reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete above plinth level Hard drawn steel wire fabric

Finishing with Epoxy paint (two or more coats) at all locations prepared and applied as per manufacturer’s specifications including appropriate priming coat, preparation of surface, etc complete On steel work Rock Anchor Base Plate Painting

Shotcreting R.C.C. columns, beams and slabs etc. in layers wit approved design mix concrete having the specified minimum characteristic compressive strength [with ordinary portland cement, coarse sand and graded stone aggregate of 10 mm maximum size in proportion as per design criteria] including the cost of centering and shuttering at edges and corners etc. as directed by Engineer-in- Charge Note: Rates shall include the providing necessary ground wires etc. The levelling gauges, if used, shall be paid for separately. Payment under this item shall be made only after proper wet curing has been done and surface has been satisfactorily evaluated by sounding/ tapping with a blunt metal instrument. 25mm thick in Grade M 25 with cement content not less than 330 kg per cum

Providing and laying cement concrete in retaining walls, return walls, walls (any thickness) including attached pilasters, columns, piers, abutments, pillars, posts,struts, buttresses, string or lacing courses, parapets, coping, bed blocks, anchors blocks, plain window sills, fillets etcupto floor V level, including curing but excluding the cost of centring, shuttering and finishing with. 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size)

Centering and shuttering including strutting, propping etc. and removal of form for: Walls (any thickness) including attached pilasters, buttresses, plinth and string courses etc.

Hiring charges for providing and operating a mobile crane of 50 Tonne capacity with boom height not less than 50 metres, including cost of fuel, lubricants, operator, helper and all incidental charges required for safe and efficient functioning at site. The quoted hire charges shall be inclusive of mobilization, demobilization, shifting within site premises, positioning, rigging and all operations necessary for handling structural/electro-mechanical components or any other load as directed by the Engineer-in-Charge.