supply and delivery at site of 5 (five). numbers of four wheeled trailers with compartments under naihati municipality (3rd call) , function: secondary collection of waste, number of wheel: 2(two),capacity: 3 cubic meter (approx.), size: 2750mm*1500mm*600mm+450 mm., upper chassis: fabricated from 100 mm*50mm*6mm m.s channel with cross member of the same section, chassis:fabricated from 100mm*50mm*6mm m.s channel with cross member of the same section & 50 mm* 50mm* 6 mm m.s angle. drawbar: a triangular type drawbar made from 100 mm* 50mm *6 mm m.s channel with spring with spring loaded “i” hook of 36 mm dia. m.s round. parking stand:a screw jack type parking stand fabricated from 50 mm dia. m.s round with base plate of 25 mm thick 100 mm square. sides & top structure: sides & top structure fabricated from 75 mm* 40mm *6 mm m.s channel, 40mm*40mm*6mm* m.s angle. for biodegradable & non-biodegradable waste: the structure provided with a tilting type partition when hydraulically lifting at 900 mm back side with hinged arrangement to be fabricated from 40mm* 40mm* 6mm m.s angle with 2.5 mm crc sheet. leachate: a drain plug/ hole would be provided to drain the leachate or for cleaning along with collection reservoir.side dala: each side 2(two) nos unloading dala fabricated from 35 mm* 35mm *5mm m.s angle with cross member of the same section. top dala: each side provided with 2 nos loading dala fabricated from 30 mm* 30mm* 5 mm m.s angle with cross member of the same section.platform sheet: platform to be covered with 5 mm c.r c sheet with standard length. sides & top sheet: sides to be covered with 2.5 mm thick crc sheet & top with 2 mm thick. cylinder:125mm. dia* 1050mm. height telescopic type hydraulic cylinder with hydraulic pipe for joint with the tractor with necessary accessories. axle: 1 (one) no. 65 mm square m.s axle with heavy duty c.i hubs & tapper roller bearing size 30209 (skf). spring: 2 (two) set 65 mm* 11mm *12 leaves laminated leaf spring with u clamp u