Construction of Bridge over Surubalijore on Badkirasira to Sankirasira Road in the district of Subarnapur under SBY for the year 2026-27

Earthwork in excavation for bridge works in all kinds of soil, by mechanical means utilising the surplus earth locally for road work where ever required, back filling the excavated earth to the extent required complete in all respect as per approved drawing and technical specifications as per Section 900 and Clause 301 & 304 of MoRT&H Specifications for Road & Bridge works (5th Revision) & including cost of all labour, T&P, royalty etc complete and as per direction of the Engineer in Charge.

Labour of sinking single circular well caission/ cribwell of specified external diameter in all kinds of soil to lines levels & plumb by scooping out from inside the well & below the steining including cost of dredging & plants ,supply & work of pumps, dredgers & compressors, derrick, winches, cranes etc. balling out of water & dredging, removing all materials & obstacles from inside the wells inclusive of hire & running charges of all such machinery including materials & labour charges for providing kentledge loading if necessary & sinking to the required depth by loading with proper designed & preapproved weight & taking precautions adequately against tilting & shifting & dispiosal of the dredged materials away from the wells as per the direction of Engineer-in charge with all leads & lifts in all repects including all incidental charges like temporary sand filling, top pluging of well etc. for safety of the structure during execution as directed by the Enginer in charge. (Payment will only be made for sinking of the well & other items required for the well sinking operation is only incidental & no payment will be made for such items)(Upto 10.00 mtr depth) (Upto 10.00 mtr depth)

For 6.5 mtr dia Well

In Soft rock (For 7.5m dia wells)

For 6.5m dia. wells

In Hard rock (For 7.5m dia wells)

For 6.5m dia. wells

Supplying & fitting fixing in position steel cutting edge as per approved design & drawing weighing not less than 80kg. per meter including steel cladding using M.S.Angles/ rods, plates bolts & nuts, rivets complete wherever necessary including bending to size & shape drilling holes riveting welding bolting etc. complete in all respects confirming to relevant IRC codes & ISI specification including cost conveyance & all taxes of all materials, labour & T&P & all machineries etc. required for the work with all leads & lifts complete in position in all respects (cutting edge to be placed at the level of the bottom of well cap indicated in Drg. or 150 mm. above L.W.L. as specified in the Drg. or as per written order of the Engineer in Charge.

Cement concrete with M-150+10% extra cement on nominal mix to be used for bottom plugging having maximum compressive strength of 150 kg./cm2 with minimum quantity of cement as specified in IRC code in work tests on 150 mm. cubes at 28 days curing using cement as per CL 710-7 of IRC-78/1983 after mixing & tests conduct in accordance with IS 456 & IS-516 with crusher broken hard granite coarse aggregate of 40 mm. size down graded in conformity with clause-302.6.2 of IRC-21/1987 of approved quality (test in laboratory) from approved quarry & concrete laid in continuous operation using tremie pipes or skip boxes upto required depth including lowering, hoisting & laying in layers of 150 mm. thick with cost, conveyance royalty & other taxes of all materials, labour hire charges of all T&P & machineries required for the work complete in all respect. (in case of grouted concrete the grout mix shall not be leaner than 1:2) (Recuperation test may have to be done if directed by Engineer in Charge.). (Botton Pluging)

Cement concrete of M-150 having maximum compressive strength of 150 kg./cm2 ( test to be conducted) on 150 mm. cubes tested at 28 days including curing (tests conducted in accordance with IS-456 & IS-516) & conforming to clause-302 of IRC 21/1987 using clean crusher broken hard granite coarse aggregate of 40 mm. size down grade of approved quality to be protested in the laboratory) obtained from approved quarry the proportion mix, grading conforming to relevant ISI/IRC codes pre-approved including arranging of reinforcement as per approved drawing including hoisting, lowering concrete in layers not exceeding 150 mm. thick each compacting with vibrator watering & curing for 28 days centering shuttering & finishing the exposed surface smooth providing grooves & beads where necessary including cost, conveyance royality & taxes of all labour machineries etc. required for the work complete in all respects including dismantling the centering & shuttering as per specification & direction of Engineer in Charge. (Top Pluging)