SPECIAL REPAIR OF FILTER BED NO 01 AND 02 FOR CHANGING OF FILTER MEDIA OPEN THE CHANNEL AND TAKEN OUT SAND, GRAVELS FROM CHANNEL REPLACING DAMAGED LATERAL PIPE (PRESSURE PIPE) AND RECASTING RCC COVER OVER CHANNEL OF CHAS FILTER

Supplying all labours, equipment's taking out the existing sand/ Gravel from filter bed and carrying the same up to a distance of 500ft on head load and lift & disposal the same from plant campus

Supplying labours tools and equipment's and washing three times the taken out gravel with pot and cleaning it dust free, drying and grading in proper screening and stacking etc. all complete job. 2" to 1" gravel - 9" deep 1.5" to 1" gravel -9" deep

Supplying well graded & best quality of pea gravels of different sizes including loading & unloading and stacking in grade wise including carriage up to Chas plant cleaning after screening including supplying all labours & tools and carrying on head load a distance up to 800ft and lift of about 15ft. all complete as per specification and direction of E/I Note: The pea gravels should be spherical shape hard clean and uniform in quality and should not contain dirt and clay. The size of the gravels should be classified by passing through sieves of five sides sieves 1" to 1/2" gravel -11" deep 1/2" to 1/4" gravel -11" deep 1/4" to 1/10" gravel - 11" deep

Supplying labours tools and equipment's and placing them Properly in filter bed quantity as same item no-2 & 3 etc. all complete job (by head load) 2" to 1" gravel - 9"deep 1.5" to 1" gravel - 9" deep 1" to 1/2" gravel - 11" deep 1/2" to 1/4" gravel - 11" deep 1/4" to 1/10" gravel - 11" deep

Supplying Barakar sand of size 0.45mm to 0.70mm (effective size uniformly confident) of best and approved quality duly washed and placing the same in position in the filter bed in one layer with a lead of 800ft and a lift of about 15ft including carriage from Barakar river to filtration plant Chas with all complete as per direction of E/I

Dismantling of old plaster and pointing in cement or lime and taking out joint to 15mm depth watering and disposal of unserviceable materials with all lead and lift all complete as per direction of E/I

Supplying all labours, materials & tools, opening, cleaning, repairing and replacing of brass nozzle & other as per direction of E/I. Nozzle - 400 nos

Dismantling PCC work including disposal of unserviceable materials with all lead & lift all complete as per direction of E/I

Providing 12mm thick water proof cement plaster (1:3) with clean coarse sand of FM 1.5 width 5% cico of any other water proofing compounds including scaffolding all complete as per building specification and direction of E/I

Providing PCC M 20 with nominal mixed of (1:1:5:3) in foundation & plinth with approved Quality of stone chips 20mm to 6mm size graded and clean coarse sand of FM 2.6 to 3 including screening shuttering, mixing cement concrete in mixer placing in position vibrating skirting curing complete as per specification & direction of E/I

Providing 1.5mm thick cement punning including curing Carriage of water with all lead and lift as per specification & direction of E/I

Providing and applying epoxy paint of approved make (Shalimar, Ciba or Mahindra & Mahindra) to concrete surface of filter bed and any other surface including cleaning the surface by scrapping and air blowersto the satisfaction & necessary scaffolding etc. all complete job with all lead and lift as per E/I

Providing two coat of ready mixed paint or anticorrosive paint of approved shade & make over still surface thoroughly. Including preparing the surface or scaffolding taxes etc. all complete job as per specification & direction of E/I.(as per item no 15)

Supplying all materials labours, tools & equipment's & fitting and fixing 80mm G.I. pipe in the bed of filter bed and laying should be done as per specification and direction of E/I (The hole in the pipe should be of size 3/8" dia at 3" C/C in three rows)

CEMENT(5 Km radius)

SAND(19+1Km radius)

Stone chips (19+1Km radius)

ADD GST 18%

ADD LABOUR CESS@1%