Drainage Works Tenders

Earthwork in excavation or re-excavation of drainage channels / rivers in all kinds of soil including silt, sand, slush etc. mixed with all sorts of Industrial wastes, sewages, municipal garbage, carcasses, tannery effluents, jungles, bushes, semi-solid / solid campact mass, water hyacinth, cowdung deposits, decomposed vegetations, polythenes, brick bats, gravels, stone ballast, crates, remnant of bullah and bamboo pins etc. by means of suitable excavator mounted on pontoon (min. depth of water 0.75 metre) specially made to suit the site condition in tidal or non-tidal channel / river and carrying of the excavated materials to suitable locations of the channel / river bank from the point of excavation by diesel machine operated boats or similar arrangements in a manner suited for the purpose and placing the excavated materials from the boat etc. on the top of the bank in case of disposal at suitable places arranged by the agency at his own cost, on the bank at available locations having distances from the point of re- excavation as shown below, by means of excavators or any other machines or manually as may be required, including all lifts.level for the existing bed of the channel / river is to be taken by displacing water hyacinth and all other floating materials including compact masses, carcasses etc. and for which no extra payment will be made. Post-work level section will be taken only when a stretch of at least 300 metre is completed and the said post-work will be taken within 7 days after completion of excavation in that reach. For distance beyond 200 metre but within 300 metre from the point of re- excavation to the placing point on the bank.

Providing and laying at or near ground level factory made kerb stone of M-25 grade cement in position to the required line, level and curvature jointed with cement mortar 1:3 (1cement : 3 coarser sand) including making joints with or without grooves (thickness of joints except ar sharp curve shall not to more than 5mm) including making drainage, opening wherever required complete etc. as per direction of Engg-in-charge (Length of finished kerb shall be measured for payment)

Earthwork in excavation in the canals/drainage channels/borrow pits/River bed/slope of bank as noted below as per designed section & throwing the spoils in layers of 25cm for making banks as per profile or to deposit the same in any other place within an initial lead of 30 metre and initial lift of 1.5 metre including breaking clods , roughdressing etc. complete as per direction of the Engineer-in-charge. (b)Gravel/moorum/kankar/compact moorum/very much weather rock / sticky soil mixed with moorum / soil mixed with Shingles.

Providing and Laying of kerb of size 2’-0” x 9” having 4” thickness at bottom and 3” thickness at top and made of plain cement concrete 1:2:4 duly vibrated and compacted. The rates also includes fixing in position at or near ground level in position to the required line, level and curvature, jointed with cement mortar 1:3 (1 cement : 3 coarse sand), including making joints with or without grooves (thickness of joints, except at sharp curve, shall not be more than 5 mm), including making drainage opening wherever required etc. complete as per direction of Engineer-in-charge.