KMC/WS/JHJP/41/2025-2026

REMOVING THE SAND MEDIA VERY CAUTIOUSLY UP TO THE TOP LAYER OF THE GRAVEL FROM R.G. FILTER BED INCLUDING COLLECTING, HIDING, CARRYING AND LIFTING PROPERLY OUTSIDE OF R.G. FILTER PLANT WITHIN 500M (AVERAGE) FROM THE BED BY HEAD LOAD AND THEN REMOVING THE SAME FROM THERE BY LORRY AT ANY PLACE WITHIN 2.0 KM OF IGWTP OR NEAREST SAND WASHING MACHINE AS PER DIRECTION OF EIC INCLUDING LOADING & UNLOADING THE SAME BY HEAD LOAD WITHIN A LEAD OF 30M AND COMPLETE IN ALL RESPECT AS PER DIRECTION OF EIC

CLEANING THE DIRT/JUNGLES ETC & WASHING OF COARSE SAND/MEDIUM SAND THROUGH WATER JET TYPE SAND WASHING MACHINE AND STACKING IN HEAPS/STACKS INCLUDING CUTTING & CARRYING THE SAND FROM ALL WORK SITES OF RGSFB AREA AT IGWTP TO THE IDENTIFIED SAND WASHING MACHINE. AFTER WASHING OF SAND THE TURBIDITY OF WASHED SAND MUST BE WITHIN 7000 PPM ( PAYMENT SHOULD BE MADE ON THE BASIC OF STACK MEASUREMENT OF UNWASHED SAND).

SUPPLY DELIVERY & UNLOADING OF THE COURSE SAND (EFFECTIE SIZE 0.8 TO 1.2 , UNIFORMITY CO-EFFICIENT - 1.3 TO 1.7 )

SUPPLY, DELIVERY AND FITTINGS OF FOOD GRADE PVC NOZZLES FOR FILTER BED

SUPPLY DELIVERY & UNLOADING OF THE GRAVELS (EFFECTIVE SIZE-3.0 TO 6.0 MM, IS8419,PART-I-1977) AT IGWTP.

Flange joint to C.l./D.l/MS. pipes and specials including supply of rubber gasket.nuts. bolts. washers etc. of best quality to make the joint watertight at required hydraulic pressure all complete as per specification & direction of the Engineer-in-Charge. Diameter in mm 600mm dia.

THOROUGHLY WASHING ALL FILTER BED GRAVELS, GRITS BY WATER JETTING AFTER IMMERSING IN MURICES/HYDROCHLORIC ACID SOLUTION FOR A TIME AS PER DIRECTION OF EIC AND REWASHING THE SAME BY JETTING OF WATER DRAW FROM SAND WASHING MACHINE OR NOT WASHING VAT AND DO NEEDLE FOR SCREENING BY SHEAVING OR REVERSE SHEAVING TO DIFFERENTIATE ALL THE DIFFERENT SIZES OF GRAVELS AS PER DIRECTION OF EIC AND MAKE STACK OF DIFFERENT SIZES OF GRAVELS ON THE GROUND NEAR R.G. FILTER PLANT BY LORRY AND HEAD LOAD IN SIZE INCLUDING LOADING & UNLOADING AS PER DIRECTION OF EIC AND COMPLETE IN ALL RESPECT. AFTER CLEANING NO DIRT/MUD COATING SHOULD BE FOUND AROUND THE SURFACE OF THE DIFFERENTIATED GRAVELS.

PACKINGS OF BEDS OF R.G. FILTER WITH DIFFERENTIATED GRAVELS & GRITS CARRYING FROM A DISTANCE WITHIN 150M AVERAGE FROM THE R.G. FILTER BED VERY CAREFULLY I.E. REARRANGING THE CLEANED DIFFERENTIATED GRAVELS IN SIZE WISE LAYER INCLUDING HAND PECKING THE GRAVELS AROUND LATERALS AS PER DIRECTION OF E.I.C. SO THAT TOTAL GRAVELS STRATUM TO BE NOT LESS THAN 500MM INCLUDING LEVELLING THE TOP SURFACE AND COMPLETE IN ALL RESPECT AS PER DIRECTION OF EIC.

FILLING OF THE R.G. FILTER BED BY NEW/OLD WASHED SAND INCLUDING LOADING INTO LORRY FROM STACK YARD WITHIN 1KM INSIDE IGWTP AND UNLOADING THE SAME IN THE OUTSIDE THE RG FILTER PLANT PREMISES AND CARRYING BY HEAD LOAD UPTO 500M (AVERAGE) DISTANCE TO UNLOADING POINT INCLUDING SCREENING, LEVELING & DRESSING THE TOP SURFACE AS PER DIRECTION OF EIC. SO THAT DEPTH OF SAND NOT TO BE LESS THAN 600MM FROM THE TOP OF THE GRAVELS AND COMPLETE IN ALL RESPECT AS PER DIRECTION OF EIC.

Estimated amount

Add: 18%GST

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