bids are invited for water tank 500 ltr multi layer hdpe with uv antibacterial layers - material hdpe layers 3 multi layer with uv stabilized outer layer antibacterial inner layer features antibacterial inner layer comma helps reduce bacterial comma algae growth 100 parsent uv stabilized tank and lid comma preventing sunlight from reaching stored water phthalate free comma virgin polymer granules comma food grade and safe , rcc plinth casting for installation of water tanks 20 by 6 by point 5 feet - foundation isolated of raft foundation depending on slope and sbc comma use rcc retaining wall at the slope end with weep holes slope reinforcement retaining wall with deadman anchors or stepped foundation waterproofing apply bitumen based or crystalline water proofing compound on the slab surface drainage provide gentle slope to one side and drain pipe to avoid water stagnation , water supply system for water filling with motor 5 hp single phase with starter and allied accessories - pump type centrifugal monoblock pump motor power 5 hp motor type single phase 230v pluse 10 parsent motor rpm 2880 rpm insulation class class b or f protection ip55 starter type dol direct on line or electronic starter with overload and dry run protection pump body meterial bronze cast iron base frame ms fabricated base with anti vibration mounts float switch level sensor for auto cut off to avoid dry run electrical wiring copper wire with isi mark , gi pipe 50 mm dia - manufacturing is 1239 standard medium class or is 3589 test pressure as per is standard base material mild steel marking identification trademark comma is standard comma medium class comma lot number or heat number comma year of manufacture , gi pipe 20 mm dia - manufacturing is 1239 standard medium class or is 3589 test pressure as per is standard base material mild steel marking identification trademark comma is standard comma medium class comma lot number or heat number comma year of manufacture , fitting and valves to inc