Bruhat Bengaluru Mahanagara Palike Tender

004 - Supplying, lowering, laying, jointing, testing and commissioning of Glazed Stone Ware Pipes of following dia, conforming to IS 651:1992, IS 4127 with latest amendments, including conveying to work site, caulking with hemp dipped in tar and jointing with CM 1:1.5 using OPC, perfect linking and curing for 10 days and testing with water etc. with all lead, lifts and as per Technical Specifications. The cost to include the cost of all jointing materials, necessary survey works for laying of sewer lines etc. complete. The contractor will make own arrangements for procuring water for testing (SR Page.No.187, I.No.16.1.4 of Water Supply & UGD Works SR 2023-24 Volume V) 230 mm dia. pipes

005 - SFRC MH Circ. 560 Frame+Cover HD (SR Page.No.A 48,SI.No.788 of Water Supply & UGD Works SR 2023-24 Volume V)

006 - Desilting of sewerlines by mechanical (Jetting, Sucking, Grabber, Scrapper etc.,) means ,setting up the over pumping arrangements, rodding and dislodging of accumulative silt from the pipeline ,removal of silt by mechanical means to the ground including barricading, cleaning of sewers and machinhole, disposal of removed silt upto a distance of 20 Kms, necessary all complete as per the instructions of the Engineer-in charge upto 300mm dia. (BWSSB SR Vol-5, Page No 207, Sl No. 16.57.1)

007 - 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 and finished 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: Constructing Brick Masonry Circular Machinehole 1.2 m internal dia. ,1.2 M depth & SFRC cover & frame (BWSSB SR Vol-5, Page No 192, Sl No.16.15.3)

008 - Repairs to Machinehole for different depths including removal of debris, levelling the brick masonry, construction of brick masonry upto Ground level, providing CC coping alround the MH cover, plastering both inside and outside to the brick masonry and fixing of manhole frame and cover,curing, refilling with appurtenances complete. Upto 0.60m depth (BWSSB SR Vol-5, Page No 198, Sl No.16.28.2)

009 - 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 (Vol-1, Page No 7, Sl No. 1.10)

010 - Providing,laying, spreading and compacting graded stone aggregates 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.(PWD SR 2023-24 of Vol 3,Page No.26, I No.4.17 )