supply of flood fighting materials with utilisation as an when required basis under jurisdiction of ranaghat irrigation sub division under nadia irrigation division- 1 supplying to site empty cement polythene bags ( capacity 50kg ) in good condition including stacking, incedental charges etc. all complete ( capacity 50 kg ) . 2 supplying nylon cage netting 1 metre x 1 metre x 1 metre size with knot having mesh size 17.5 cm x 17.5 cm constructed with nylon thread ( 210 x 24 ) having tensile strength not less than 250 kg. / sq. cm. including carriage, delivery and stacking at site inclusive of all taxes complete. 3 labour charges for dumping and placing in position properly filled in nylon crates with filled in gunny / poly cement bags ( minimum 25 nos. having capacity 50 kg ) with local earth or sand, sewing and tying the crate with nylon wire within a lead of 150 m. and all lifts in river slope or bed by cutting trenches upto 50 cms depth, if necessary, or by boat including cost of hire charges of boat, boatmen and other necessary equipments and also including cost of bags, carriage and charge of filling bags with earth / sand but excluding cost of nylon crate as perdirection of the engineer – in – charge.nb:- volume of each earth / sand filled bags should not be less than 0.028 m3.size of nylon crate is 1metre x 1metre x 1metre. b ) where boats are not necessary. 4 labour charges for dumping and placing in position properly filled in nylon crates with filled in gunny / poly cement bags ( minimum 25 nos. having capacity 50 kg ) with local earth or sand, sewing and tying the crate with nylon wire within a lead of 150 m. and all lifts in river slope or bed by cutting trenches upto 50 cms depth, if necessary, or by boat including cost of hire charges of boat, boatmen and other necessary equipments and also including cost of bags, carriage and charge of filling bags with earth / sand but excluding cost of nylon crate as perdirection of the engineer – in – charge.nb:- volume of each earth / sand filled bags should not be less than 0.028 m3.size of nylon crate is 1metre x 1metre x 1metre. b ) where boats are necessary.