tender for charges for cutting & removal of existing eroded ms structures along with the fixtures provided over the inner & and outer rings of clarifier-i. , charges for devolution of the removed sun shield roof and its ms structures in clarifier-i to central stores. , charges for fabrication of truss, purlin, stiffener & cleat for outer ring of clarifier using required ms angle by cutting, grinding the edges. , charges for fabrication & required drilling of truss, purlin, cleat for inner ring of clarifier using required ms angle by cutting, grinding the edges. , charges for fixing of 1 no. fabricated truss at 6 mtr height (from the bottom base of clarifier) in the outer & inner ring of clarifier and welding the truss with its support, stiffeners and joining the one truss with another one using m16x70 mm bolts & tightening. , charges for dismantling the eroded g.i. corrugated sheets fixed over the new fabricated m.s. structural truss on the inner and outer rings of clarifier and reassembling with new roofing g.i. corrugated sheets including drilling in g.i corrugated sheets for fixing with truss using required g.i. ‘j- bolt including cost of g.i. ‘j-bolt of length 150mm & nut with cup/bituminous washer. , charges for painting with one coat of epoxy red oxide primer and two coat of epoxy coal tar paint over the fabricated truss and purlin on the inner & outer rings of the clarifier -i. , charges for providing scaffolding arrangements using steel pipes on the inner and outer rings of the clarifier for erecting the fabricated structural truss (required scaffolding materials and its transportation to work spot from outside mtps-i are under contractor scope). , cost of epoxy red oxide primer for sl.no.7 , cost of coal tar black paint for sl.no.7 , cost of epoxy thinner for sl.no.7 , cost of g.i. bolt of size m16x70mm full thread bolt with nut and 2 washers for sl.no.5 , supply of various sizes of angles, plate/flat for sl.no.3&4 (procurement of required angle, plate/flat