Bengaluru Water Supply And Sewerage Board Tender

Code04 - 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. All kinds of soil depth upto 1.5m

Code05 - Depth exceeding 1.5 m, but not exceeding 3 m

Code06 - Depth exceeding 3 m, but not exceeding 4.5 m

Code07 - Earth work excavation for pipeline trenches 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 and all other appurtenances to complete in the following strata. Ordinary/soft rock (without requiring blasting) Depth upto 1.50m

Code08 - Depth exceeding 1.5 m, but not exceeding 3 m

Code09 - Depth exceeding 3 m, but not exceeding 4.50 m

Code10 - 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 upto 1.50 m

Code11 - Depth exceeding 1.5 m, but not exceeding 3 m

Code12 - Depth exceeding 3 m, but not exceeding 4.5 m

Code13 - Excavation of Hard Rock by diamond rope cutting method using diamond rope,line draw machine,making holes by drilling machine for breaking the block by means of hydraulic breakers/splitters without any means of blasting or use of explosives,etc.,complete as per specification and directions of the Engineer-in-Charge.

Code14 - 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

Code15 - Carting of excavated earth of all types upto a distance mentioned below and re-carting back the eath to the same site by vehicle including loading, unloading charges for to & fro, with all lifts, labour, HOM of machinery etc. complete, after obtaining the approval of the Chief Engineer, for: Distance 4 to 5 km

Code16 - Removal of Unserviceable Soil with Disposal upto a suitable distance as directed by the Engineer incharge of work

Code17 - 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. 5 hp pump

Code18 - Providing Bedding or Backfilling using approved stone dust /quarry dust of size not exceeding 5.6 mm for the pipe line trenches including watering and consolidation etc., complete with all lead and lifts as per specification and as directed by the engineer incharge, after obtaining the approval of the Chief Engineer.

Code19 - Providing, erecting and removing casurina pole three tier BARRICADING using poles of 7.5 to 10 cms dia. and 1.5M height above ground fixed vertically at intervals of 2.0 to 2.5 M centre to centre and horizontally at 0.5M above ground level, including fixing poles in ground for a maximum depth of 0.3M and tied with coir rope firmly including cost and conveyances of all materials, labour, lead and lifts charges etc. complete.

Code20 - Providing and installation of Class SN8 Double Wall Corrugated HDPE pipe outer wall corrugated and inner wall smooth piping system in accordance with IS 16098 part 2 and conveying to work site and lowering into trenches, laying true to line and level and perfect linking at joints with the help of two "O" rings and a coupler of suitable size, including loading and unloading at both destination and cutting of pipes where ever necessary including jointing with all labour, all lead and lift including encasing the pipe around to a depth of not less than 15 cm with screened soft soil available from the excavated soil. The testing commissioning including necessary hydraulic test to the required pressure as per ISS shall be done the contractor shall have to make his own arrangement for procuring water for testing etc. complete. SN8 Double Wall Corrugated HDPE pipe sizes of 250 mm dia

Code21 - Providing and laying Ductile Iron pipes of class conforming to IS 8329:2000 with latest amendments, conveying to work site, rolling and lowering into trenches, laying true to line, level and perfect linking at joints, testing and commissioning, including loading and unloading at both destinations, cutting of pipes wherever necessary, jointing with DI specials (excluding cost of specials) and rubber gaskets, cleaning the socket and spigot end with soap solution, applying soft soap to the socket and spigot ends before insertion of rubber gaskets, jacking and fixing in perfect conditions etc. The cost to include soap solution, soft soap, waste etc. and giving necessary hydraulic test to the required pressure as per ISS with all lead and lifts and cost of all jointing materials. (The contractor will make his own arrangements for water for testing. Earth work excavation in trenches to be measured and paid for seperately) Note: In sewerage projects for internal cement mortal lining ( CML ) of DI pipes, if High Alumina Cement ( HAC ) as recommended in Annexure B clause 16.3 of IS8329:2000 is considered in place of Slag or Sulphate Resistance Cement ( SRC ), the cost of pipes may be increased by 5-6% from the prices listed.For DI K9 Pipes:250mm dia

Code22 - Construction of RCC Machinehole chambers of 1:1.5:3 proportion orapproved type Cast-insitu / Pre-cast RCC Machinehole chambers, constructed using form vibrators of standard type, with barricading, danger lighting and using of sight rails and boning rods wherever necessary, shoring and strutting wherever required using Ordinary Port Land Cement, using 1:1.5:3 proportion RCC with 20 mm and down graded jelly, well graded sand and steel of approved quality, 200 mm thick top concrete slab, having wall thickness and raft thickness as in approved drawings and with an offset in raft alround the chamber as in approved drawing, benching concrete with 1:6 slope towards the central drain finished smooth, including fixing and grouting of pipes, including conveying to work spot supply and fixing SFRCMachinehole cover and frame (Heavy duty) conforming to IS:12592 with latest amendments, on a bed of CC 1:2:4 supplying and fixing of minimum 3 mm thick encapsulated plastic footsteps (as per IS 10910) on 12 mm dia.Grade Fe-500 steel bar (as per IS 1786) staggered at 300 mm apart as detailed in Technical specifications, including stone grit beding wherever required, watering, curing, engraving Machinehole number with flow direction on the inner cylindrical surface etc., complete including cost of reinforcement steel and fabrication charges and also cost and conveyance of all materials, labour with all lead and lifts. The Pre-cast RCC Machinehole are for various diamtersand depths as stated below and as per detailed drawings, specifications and direction of the Engineer. For 1.2m dia Machinehole:- Constructing Pre-cast RCC Machinehole 1.2 m internal dia. , 1.0 M depth & SFRC cover & frame

Code23 - For every additional depth of 0.1m upto 1.3m

Code24 - Constructing Pre-cast RCC Machinehole 1.2 m internal dia.1.3 M depth & SFRC cover & frame

Code25 - For every additional depth of 0.1m upto 1.6m

Code26 - Constructing Pre-cast RCC Machinehole 1.2 m internal dia.1.6 M depth & SFRC cover & frame

Code27 - For every additional depth of 0.1m upto 1.9m

Code28 - Constructing Pre-cast RCC Machinehole 1.2 m internal dia.1.9 M depth & SFRC cover & frame

Code29 - Constructing Pre-cast RCC Machinehole 1.2 m internal dia.2.0 M depth & SFRC cover & frame

Code30 - For every additional depth of 0.1m upto 3.0m

Code31 - Constructing Pre-cast RCC Machinehole 1.5 m internal dia.3.0 M depth & SFRC cover & frame

Code32 - For every additional depth of 0.1m upto 4.0m

Code33 - Constructing Pre-cast RCC Machinehole 1.5 m internal dia. , 4.0 M depth & SFRC cover & frame

Code34 - For every additional depth of 0.1m upto 5.0m

Code35 - Providing and laying in position Cement Concrete for all Sub structures ofbuilding, Irrigation works, Sub structure works of bridges, Drain works &other parallel works from 0.50m to 3.50 m height. The granite/trap/basaltcrushed 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 M20 Design Mix Using 20 mm nominal size graded crushed coarse aggregates

Code36 - Extra for Additionalties for Formwork, centering and scaffolding a. Foundation, Sub structure of cross drainages

Code37 - 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

Code38 - Providing and installing at site of work PVC pipes including cost of pipes and specials and labour, including lowering into trenches, laying true to line, level and perfect linking at joints leak proof including jointing of approvedtype with all labour charges and all lift charges, handlig charges including encasinng the pipe around to a depth not less than 15cms with gravel or select earth available from tyhe excavation etc complete.., 110mm (weigth opf pipe- 1.894 Kg)

Code39 - HSC Using Prime Grommet Gasket including Prime Grommet Gasket cost & Making borehole in DWC pipe and Fixing of Grommet - Rate analysis

Code40 - Supply and delivery at site special moulded variety PVC elbows as per IS 7834/ 1987 and fabricated as per IG124/ 1984 with ISI mark with its latest amendments-110 mm dia PVC Elbows

Code41 - Providing Bedding or Backfilling using approved stone dust /quarry dust of size not exceeding 5.6 mm for the pipe line trenches including watering and consolidation etc., complete with all lead and lifts as per specification and as directed by the engineer incharge, after obtaining the approval of the Chief Engineer.

Code42 - Construction of Granular Sub-Base of required grading as per design mixing in a mechanical mix plant at OMC, carriage of mixed Material to work site, spreading in uniform layers with motor grader on prepared surface and compacting with vibratory power roller to achieve the desired density, complete as per clause 401(MORTH Specification No) For Grading -V Material

Code43 - Providing, laying, spreading and compacting graded stoneaggregate to wet mix macadam specification includingpremixing the Material with water at OMC in mechanical mixplant carriage of mixed Material by tipper to site, laying in uniform layers with paver/grader in sub-base / base course onwell prepared surface and compacting with vibratory roller to achieve the desired density.MORTH Specification No. 406