Renovation of Rain water harvesting tank inside the campus of MGG College at Karmatang.

Amount

Making plinth protection 50mm thick of cement concrete 1:3:6 (1 cement : 3 coarse sand : 6 graded stone aggregate 20 mm nominal size) over 75mm 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.

Structural steel work in single section, fixed with or without connecting plate, including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer all complete.

Providing and fixing precoated galvanised steel sheet roofing accessories 0.50 mm (+ 0.05 %) total coated thickness, Zinc coating 120 grams per sqm as per IS: 277, in 240 mpa steel grade, 5-7 microns epoxy primer on both side of the sheet and polyester top coat 15-18 microns using self drilling/ self tapping screws complete :

Ridges plain (500 - 600mm)

Removing white or colour wash by scrapping and sand papering and preparing the surface smooth including necessary repairs to scratches etc. complete

Finishing walls with Acrylic Smooth exterior paint of required shade:

Old work (Two or more coat applied @ 1.67 ltr/ 10 sqm) on existing cement paint surface

Providing cement concrete surface drain including earthwork in excavation, 10 cm thick base concrete and 23 cm thick side walling with 1:3:6 (1 cement; 3 coarse sand; 6 graded stone aggregate 40mm nominal size) finishing with 1:4 (1 cement; 4 sand) including floating coat of neat cement including drain and its top and exposed surface including earth work in excavation and disposal of surplus earth etc. complete.

23x23 cm surface drain.

AJAY MANNA

S B SHARMA