Construction of Balance work of approach road from NH31A to Tarkhola ENM Store along with fencing of ENM store, Teesta VI HE Project

Amount

Preparation and Surface Treatment of formation. (Preparation and surface treatment of formation by removing mud and slurry, watering to the extent needed to maintain the desired moisture content, rolling with 8-10 tonne smooth wheeled roller, complete as per clause 310.)

Water Bound Macadam (Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing, rolling with vibratory roller 8-10 tonnes in stages to proper grade and camber, applying and brooming requisite type of screening/ binding Materials to fill up the interstices of coarse aggregate, watering and compacting to the required density.) B. By Mechanical Means: (ii) Grading-II b . Using Screening Type-A (13.2mm Agg.)

Water Bound Macadam (Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing, rolling with vibratory roller 8-10 tonnes in stages to proper grade and camber, applying and brooming requisite type of screening/ binding Materials to fill up the interstices of coarse aggregate, watering and compacting to the required density.) B. By Mechanical Means: (iii) Grading -III b . Using Screening Type-B (11.2mm Agg.)

Prime coat (Providing and applying primer coat with bitumen emulsion on prepared surface of granular Base including clearing of road surface and spraying primer at the rate shown in 500-1 using mechanical means.) ii)Medium Porosity

Bituminous Concrete (Providing and laying bituminous concrete with 100-120 TPH batch type hot mix plant producing an average output of 75 tonnes per hour using crushed aggregates of specified grading, premixed with bituminous binder @ 5.4 to 5.6 % of mix and filler, transporting the hot mix to work site, laying with a hydrostatic paver finisher with sensor control to the required grade, level and alignment, rolling with smooth wheeled, vibratory and tandem rollers to achieve the desired compaction as per MORTH specification clause No. 509 complete in all respects) Using Bitumen 60/70 grade for Grading-I ( 13 mm nominal size )

Surface Dressing (Providing and laying surface dressing as wearing course in single coat using crushed stone aggregates of specified size on a layer of bituminous binder laid on prepared surface and rolling with 8-10 tonne smooth wheeled steel roller) Case-I 19 mm nominal chipping size

Providing and Laying in position cement concrete of specified grade including compacting curing etc all complete.

Excavation in soil in hilly area by mechanical means including cutting and trimming of side slopes and disposing of excavated earth with all lifts and lead up to 1000 metres.

Centring and shuttering including strutting, propping etc. and removal of form work for : Foundations, footings, bases for columns

G.I Barbed wire Fencing 1.8 metre high (Providing and fixing 1.8 metres high GI barbed wire fencing with 2.4 m angle iron posts 50 mm x 50 mm x 6 mm placed every 3 metres centre to centre founded in M15 grade cement concrete, 0.6 metre below ground level, every 15th post, last but one end post and corner post shall be strutted on both sides and end post on one side only and provided with 12 horizontal lines and 2 diagonals interwoven with horizontal wires, fixed with GI staples, turn buckles etc complete as per clause 807

Providing, fitting, fixing of 24 BWG GCI sheet roofing with lapping of 150mm (two corrugation) with G.I. hooks, bolts and nut 8mm dia. with bitumen, GI limpet washers filled with white bad including coat of approved steel primer and two coats of approved paint, on overlapping of sheet excluding carriage all complete.

Chandra Bahadur Chettri