supply, installation, testing & commissioning of 60 nos 24-watt solar street light at different places under sankrail block in the howrah district (pin point location as per annexure-ix) .- 1 supplying and fixing of intergrated solar 24 watt led street light in aluminium strcuture encloser ip65 with built in mono or poly crystalline panel, lithium ferro phosphate (lifeo4) battery, mppt charge controller and sensor with colour temperature between (5500-6500) degree kelvin,having following minimum specification on top of tubuler pipe pole, solar module: 100 wp or higher, lumen output : 120 lumen/watt, viweing angle:120 or higher, red led for battery low, green led for solar charging, battery capacity: 12.8 volt 500 wh or higher, autonomy: dusk to dawn or 2 days expected battery life 2000 cycles, in-built bms for battery safety, maintainance free operating temperature of (lifepo4)-10digree centigrade + 55 digree centigradehigh efficiency>90%, battey charging time not more then a day, reverse polarity protection for battery & solar panel, over charge & deover charge & deep discharge protection for over voltage & over current protection from solar pv module dusk to dawn operation, cooling air natural, bis/mnre/iec approved. make: simoco/benlo/surya or eqiuvalent.[with 5 years system warranty]. 2 supplying and installation of 6 mtr. long,76.1 mm top dia,90 mm bottom dia, 3.0 mm thick, conforming to is 1161:2014 with corrosion proof galvanisation conforming to is 2629-1965 with ole cap at top and base plate of 3 mm thick 200 mm x 200 mm and coupler for fixing luminary setin cc foundation (proportion and dimension indicated below), having 600 x600x150 mm thick cc (4:2:1) base block below base plate/ pole with hard metal including cc with metal chips (6:3:1) of size 600x600x1000 mm below ground level including 3mm thick neat cemented finish and gi earth bolt after making drilled holes etc. on pole & carrige of pole at work-site including filling up the excavated earth pit with shifted soil and ramming properly. make-galpol/bpp/utkash or any isi make brand. 3 marble plaque 4 sub total 5 gst 18% 6 cess 1%