Bengaluru Water Supply And Sewerage Board Tender

a04 - Earth work excavation for pipeline trenches in all kinds of soils by mechanical means as per drawing and technical specifications, including setting out, construction of shoring, strutting, barricading, caution lights, bracing, using sight rails & bonding rods at every 100 mm wherever necessary as directed, removal of stumps and other deleterious matter, dressing of sides and levelling the bottom of trench to the extent required , utilising the available excavated earth locally for the work etc., and all other appurtenances complete in the following strata. Depth upto 1.50 m

a04.1 - Depth exceeding 1.5 m, but not exceeding 3 m

a04.2 - Depth exceeding 3.0 m, but not exceeding 4.50 m

a04.3 - Beyond 4.50m up to 6.0m Extra for every additional lift of 1.5m or parth thereof in excavation bunking excavated or stacked materials

a04.4 - Beyond 6.0m up to 7.5m Extra for every additional lift of 1.5m or parth thereof in excavation bunking excavated or stacked materials

a05 - Earth work excavation for pipeline trenches by mechanical means as per drawing and technical specification, including setting out, construction of shoring, strutting, cost of blasting materials, barricading, caution lights, bracing, using sight rails & bonding rods at every 100 mm wherever necessary as directed, removal of stumps and other deleterious matter, dressing of sides and levelling the bottom of trench to the extent required , utilising the available excavated earth locally for the work and all other appurtenances to complete in the following strata.. Hard rock (blasting prohibited) Depth exceeding 1.5 m, but not exceeding 3 m

a05.1 - Hard rock (blasting prohibited) Depth exceeding 3.0 m, but not exceeding 4.50 m

a06 - Providing and installing sheet piling for both sides of the trenches for following depths with mild steel sheets of not less than 6.5mm thick, stronger knife edge, recessed spreader sockets, 3 inch single or double wall shields, to be designed by the contractor to withstand all types of soils, maximum depth as per the approved design drawings, including labour charges for installing and removiing the sheet piling at various reaches of sewer line constructions, including loading, unloading, transporting to the suitable location etc. complete with all lead and lifts. (Measurement shall be taken for one side only eventhough it is provided for both sides).for depth up to3.0 m

a06.1 - For depth 3.0m to 6.0 m

a07 - Providing and Filling in foundation with granite / trap broken metal 100mm. and down size & with approved sand including hand packing, ramming, watering, including cost of all materials and labour with all lead and lift complete as per specifications.

a08 - Providing and laying in position Cement Concrete for all Sub structures of building, Irrigation works, Sub structure works of bridges, Drain works & other parallel works from 0.50m to 3.50 m height. The granite/trap/basalt crushed graded coarse aggregates and fine aggregates as per relevant IS Codes machine mixed with super plasticisers, laid in layers, well compacted using needle vibrators, providing weep holes wherever necessary, including all lead & lifts cost of all materials of quality, confirming to the requirements of relevant IS codes. labours, Usage charges of mechinery, curing and all other appuretnces required to complete the work as per technical specifiecaions. Mix 1:2:4 (M15) Using 20man nominal size graded crused coarse aggregates.

a09 - Supplying S&S RCC SPUN / VIBRATED CAST PIPES (REINFORCED) pipes NP-3 Class conforming to IS:458-1988 with latest amentments using ordinary portland cement, for sanitary works and conveying to work site, rolling and lowering into trenches, laying true to line and level including loading and unloading at both destinations and jointing of pipes and specials, perfect linking of joints with jack to correct position including cost of jointing materials, i.e, rubber rings conforming to IS: 5382 for S&S RCC pipes, with all leads and lifts as directed and giving necessary hydraulic test as per ISS to the required pressure and commissioning etc. complete. (Contractor will make his own arrangements for procuring water for testing). Before the execution of the work, the contractor shall carry out the survey. RCC NP3 Class pipe of 600 mm dia

a10 - Providing and constructing “WIRE CUT BRICK MACHINEHOLE CHAMBERS” using Portland/Pozzolana cement, conical in shape at top, with CC 1:3:6 foundation using 40mm and down size graded metal of approved quality and with an offset of 0.15M alround the chamber. Construct Brick masonry in CM 1:4, 340 mm thick, with wirecut bricks of approved quality, plaster inside and out side with CM 1:3, 12mm thick, except for the conical surface outside where the plaster thickness shall be 20mm. Slope inside to be 1:6 in the concrete towards central drain andfinished smooth. Fixing of pipes in CC 1:2:4 with graded metal of 20mm and down size. Supplying and fixing SFRC Machinehole frame and cover (Heavy Duty) conforming to IS:12592 with latest amendment, in CC 1:2:4. Supplying and fixing footsteps made of 12mm dia. steel bars (Fe-500) with 3mm thick plastic encapsulation (IS-10910). The footsteps shall be fixed 30cms apart and on CC block embeded to masonry wall. The whole works include watering, curing, barricading, danger lighting, pouring tar over MH frame and cover, cost of tar, shoring, strutting, dewatering,engraving Machinehole number with flow direction on the inner conical surface etc. as per the drawing etc. as per technical specifications and for the following diameters and depth etc. for 1.2mm diaCirc. B M.H: For 1.50m dia Machinehole. Constructing Brick Masonry Circular Machinehole 1.20 m internal dia. & 1.0 M depth includ. SFRC F&C

a10.1 - For every 0.1mt depth 1.00 to 2.00mt

a10.2 - Constructing Brick Masonry Circular Machinehole 1.20 m internal dia. & 2.0 M depth includ. SFRC F&C

a10.3 - For every 0.1mt depth 2.00 to 3.00mt

a10.4 - Constructing Brick Masonry Circular Machinehole 1.20 m internal dia. & 3.0 M depth includ. SFRC F&C

a10.5 - For every 0.1mt depth 3.00 to 4.00mt

a10.6 - Constructing Brick Masonry Circular Machinehole 1.50 m internal dia. & 3.0 M depth includ. SFRC F&C

a10.7 - Constructing Brick Masonry Circular Machinehole 1.50 m internal dia. & 4.0 M depth includ. SFRC F&C

a10.8 - For every 0.1mt depth 4.00 to 5.00mt

a10.9 - Constructing Brick Masonry Circular Machinehole 1.50 m internal dia. & 5.0 M depth includ. SFRC F&C

a10.10 - Constructing Brick Masonry Circular Machinehole 1.50 m internal dia. & 6.0 M depth includ. SFRC F&C

a11 - Dismatling Size stone masnory in LM/CM and stacking the size stone with in radius of 50cm and removing the debrise to a distance upto 200m

a12 - Construction of stone masnory with avaliable stone including curing in CM; 1:6

a13 - Providing Size Stone masonry with hard stone in foundation & plinth with Cement mortar 1:6 (1 cement : 6 coarse sand)

a14 - Dismantling of existing structures like culverts, bridges, retaining walls and other structure comprising of masonry, cement concrete, wood work, steel work, including T&P and scaffolding wherever necessary, sorting the dismantled material, disposal of unserviceable material and stacking the serviceable material with all lifts and lead C.Prestressed / RCC grade M-20 & above

a15 - Spreading of Stone Dust : Supplying and providing stone dust in the station yard or wherever required including watering, ramming, consolidating and dressing. The rate includes the cost of material, labour charges, required tools and plants etc., complete. Work shall be carried out as per the instructions of Engineer-in-charge of works as per the standard procedure

a16 - Providing, laying, spreading and compacting graded stone aggregate to wet mix macadam specification including premixing the Material with water at OMC in mechanical mix plant carriage of mixed Material by tipper to site, laying in uniform layers with paver/grader in sub-base / base course on well prepared surface and compacting with vibratory roller to achieve the desired density.

a17 - Providing and applying primer coat with SS1 grade Bitumen Emulsion on prepared surface of granular base including cleaning of road surface and spraying primer at the rate of 0.70 kg/m2 using mechanical means.

a18 - Providing and laying Bituminous Macadam with 40/60 tph capacity hot mix plant using crushed aggregates of specified grading premixed with bituminous binder VG-40 @ 3.3% by weight of mix, transported to site, laid over a previously prepared surface with mechanical paver finisher to the required grade, level and alignment and rolled as per clauses 501.6 and 501.7 to achieve the desired compaction.

a19 - Providing and applying tack coat with RS1 Bituminous Emulsion using emulsion pressure distributor at the rate of 0.20 kg/m2 on the prepared bituminous surface cleaned with mechanical broom.

a20 - Providing and laying Bituminous Concrete with 120 TPH capacity hot mix plant batch type using crushed aggregates of specified grading, premixed with bituminous binder VG-30 @ 5.2 per cent of mix and filler, transporting the hot mix to work site, laying with mechanical paver finisher to the required grade, level and alignment, rolling with smooth wheeled, vibratory and tandem rollers to achieve the desired compaction as per MORTH specification clause No. 507 complete in all respects

a21 - Providing and laying in position Cement Concrete for all Sub structures of building, Irrigation works, Sub structure works of bridges, Drain works & other parallel works from 0.50m to 3.50 m height. The granite/trap/basalt crushed graded coarse aggregates and fine aggregates as per relevant IS Codes machine mixed with super plasticisers, laid in layers, well compacted using needle vibrators, providing weep holes wherever necessary, including all lead & lifts, cost of all materials of quality, confirming to the requirements of relevant IS codes, labour, Usage charges of machinery, curing and all other appurtenances required to complete the work as per technical specifications. M30 Design Mix Using 20 mm nominal size graded crushed coarse aggregates

a22 - Supplying, fitting and placing TMT FE 550 / 550D Steel Reinforcement including cost of all materials, machinery, labour, cleaning, straightening, cutting, bending, hooking, laping/welding joints, tying with binding wire / soft annealed steel wire and other ancilary operations complete as per drawing and technical specification .All other type of structures

a23 - Disposal off the excess excavated earth of all types by vehicle including loading, unloading with all lead and lifts, labour, HOM of machineries etc. for: Distance of 4 to 5 km

a24 - Refilling available earth around trenches/pipelines, cables in layers not exceeding 20 cms in depth, compacting each deposited layer by ramming after watering with a lead upto 50 m, and lift upto 1.5 m. Including cost of all labour complete as per specifications

a25 - Providing, filling and laying of sand bags filled with sand / clay for diversion of sewage during execution of work

a26 - Dewatering the sewage / storm water by using reqired HP submersible pump for the diversion of storm / sewage during the execution of work. Considering for one Pump of 20HP