Name of Work: M/o completed scheme under Nazul Account - II, Narela Zone.S.H:- M/o Water supply lines, cleaning and disinfection of UGR\"s in Sec-B-4, Narela.
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Item Description
1
Supply and dozing of water based liquid chlorine in 490 ltr packing strength 4% to 6% as per IS 11673 % dozing through chlorinator for purification of drinking water, chlorinator i/c maintenance shall be arranged by the contractor as per direction of engineer-in-charge.
2
Bacteriological testing of water sample for approved lab.
3
Cleaning of under ground sump, Over Head R.C.C. Tank ( independent staging) including disposal of slit and rubbish, all as per direction of Engineer-in-Charge. The cleaning shall consist following operations:- sqm 422.70(i)Tank shall be emptied of water by pumping & bottom shall be cleaned ofsilt and other deposits. (ii) Entire surface area of the sump shall then scrubbed thoroughly with wire brush etc. and pressure washed with water.(iii) Chlorination of RCC internal surface by liquid chlorine.(iv) The treated surface shall be dried using air jetting and all loose particles shall be removal from the surface.(v) Finally the surface shall be treated with ultraviolet radiation etc. as per direction of Engineer-in-Charge.
4
Daily maintenance of internal water supply line of DDA housing Sector Narela for the period of one year i/c all labour. T&P etc. required as per site condition and direction of Engineer-in-charge.
5
Demolishing cement concrete manually/ by mechanical means including disposal of material within 50 metres lead as per direction of Engineer - in - charge.Nominal concrete 1:4:8 or leaner mix (including equivalent design mix)
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Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level :1:5:10 (1 cement : 5 coarse sand (zone-III) derived from natural sources : 10 graded stone aggregate 40 mm nominal sizederived from natural sources)
7
Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level : 1:2:4 (1 cement : 2 coarse sand (zone-III) derived from natural sources : 4 graded stone aggregate 20 mm nominal sizederived from natural sources)
8
Correction factor @ .973 as per CPWD OM= 1663815.60
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