bids are invited for rcc column , foundation , total column height 12.5 m from ground , ms chequered platform at height of 5 meter , ms chequered platform at height of 10 mtr , launching platform at 10 meter , over shed cover at top platform , ms laddar slope type with railing , all slithering platform to have safety grills on all three sides , loading area with brick work and loose sand filling , rock climbing surface, single face height 40 feet width min 8 feet , crash mat size 3mx2x30cm mattress for safety with cover , slithering rope 10mm dynamic climbing , slithering gloves , seat harness full size , carabiners , helmt total quantity : 143