Construction of new embankment from Dokmoka bridge to Cherakani bridge including anti-erosion measures along R/B of river Dikrut in karbi anglong district, PACKAGE 2

Amount

Anti-erosion Works : Light Jungles Clearing light jungles and trees up to 15 cm. girth including cutting, uprooting roots and stumps, removing them from the site of the work up to a distance of 30 m, etc. complete as directed. (When 30% of the area is covered by shrubs, trees etc.)

Earthwork in bank trimming to the designed section /slope by mechanical means including removing the trimmed soils to a minimum distance of 30 m, complete as directed.

Collection of blasted boulder of size 23 cm. to 30 cm in average and minimum weight 30 Kg having i. Specific gravity not less than 2.65, ii. Aggregate Chrushing < 30% (Wearing) & < 45% (Non - wearing) iii. Impact Value (%) max < 30% (Wearing) & < 45% (Non - wearing) and iv. Abrasion Value (%) < 30% (Wearing) & < 50% (Non - wearing) (Materials conforming to IS 2386 part III & IV 1963) and free from dust, dirt and other foreign materials including local carriage and stacking in regular measurable stacks of approximate 1 (One) m. height at site, etc. complete as directed. (10% under sized (minimum 10 cm) boulder is allowable for packing/filling the gaps occurred during execution of works). (15% deduction will be made from the stack measured quantities on account of void)

Collection of river gravel & shingles of size 20 mm to 40 mm in average free from dust, dirt and other foreign materials including necessary carriage and stacking in regular measurable stacks at quarry site, monopoly etc. complete as directed. (7.5% deduction will be made from the stack measured quantities on account of void).

Construction and supply of Wire -netting box of size 1.50 m × 1.50 m × 0.45 m made with mechanically woven, double twisted, hexagonal shaped wire mesh with wire made of low carbon, high ductile MS wire with heavy class of galvanization with an additional layer of PVC coating with mesh type of 10 × 12 as per EN 10223 & ASTM A975, mesh wire of 2.70 mm (I.D) /3.70 mm (OD) tensile strength of 450-500/mm2, edge wire selvedge around it at least 2.5 times, lacing wire (Zinc PVC coated) of 2.20 mm (I.D)/3.20 mm (OD), VC coating thickness of 0.50 mm nominal, 0.38 mm minimum, Mesh opening size 150 mm × 150 mm and with average weight per unit being 12 Kg with additional 3% of the weight of box for lacing wire supplied separately, supporting the facing of the box with zinc coated steel wire of required length as directed, complying with ASTM and European norms.

Labour charge for dumping boulder in cage made of wire netting sheets of size 2.57 × 1.66 m of 8 G galvanized wire making the cage from 2 nos. of wire netting sheet by tying the projected wires, filling boulder inside in cage, launching the same in position, including all handling charges and including site carriage of boulder from stack yard/ dump site within a distance of 150 m. etc. and complete as directed. (Wire netting sheets to be supplied by the Department free of cost) Without boat:

Labour charge for making filter bed of required thickness with stone metal of size 13mm to 38 mm over the trimmed surface of river bank/embankment, slope, including site carriage of metal within a distance of 150m etc. complete as directed. Without boat

Carriage of boulder/metal /sand /gravel, etc. including loading & unloading cost of P.O.L. etc. complete and including hire charge of truck with driver and handyman etc., complete as directed. On kutcha road/ embankment./ quarry road (Road maintained by contractor) For 1st Km:

Carriage of wire netting sheets of size 2.57 X 1.67 m made of 8 G wire of 152mm Sq. mesh including loading & unloading, Stacking cost of P.O.L. ,etc. complete and including hire charge of truck with driver and handyman, etc. completed as directed. (Distance to be calculated from divisional store=90km)

RAJIB SAHU

DURGA PRASAD UPADHYA

LALBABU MOHOTO

shoiab khan