M/o the completed scheme (M/o 1904 Mega Houses for 30 years) at D-6, Vasant Kunj.

Cleaning of underground 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:-(i)Tank shall be emptied of water by pumping & bottom shall be cleaned of silt 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.

Making plinth protection 50 mm thick of cement concrete 1:3:6 (1 cement: 3 coarse sand (zone-lll) derived from natural sources: 6 graded stone aggregate 20 mm nominal size derived from natural sources) over 75 mm thick bed of dry brick ballast 40 mm nominal size, well rammed and consolidated and grouted with fine sand, including necessary excavation, levelling & dressing & finishing the top smooth.

Earth work in excavation by mechanical means (Hydraulic excavator)/ manual means over areas (exceeding 30 cm in depth, 1.5 m in width as well as 10 sqm on plan) including getting out and disposal of excavated earth lead upto 50 m and for all lift, as directed by Engineer-in-charge. (a) All kinds of soil

Providing and fixing 1 mm thick M.S. sheet door with frame of 40x40x6 mm angle iron and 3 mm M.S. gusset plates at the junctions and corners, all necessary fittings complete, including applying a priming coat of approved steel primer. (a) Using flats 30x6 mm for diagonal braces and central cross piece

Painting with synthetic enamel paint of approved brand and manufacture of required colour to give an even shade : (a) Two or more coats on new work over an under coat of suitable shade with ordinary paint of approved brand and manufacture

Add Cost Index@3%

Applying GST Correction Factor @0.973 CONDITIONS: - Condition: - 1. Agency has to submit drinking water test report after cleaning and disinfecting of UGR from DDA approved labrotary as per direction of engineer-in-charge.