As per normal practice and Optimum solution, For AC filter banks (capacitors, Reactors, BPI, CT, disconnectors, resistors etc) isolated foundation were considered but during execution as Electrical inputs were delayed, to expedite construction works it was decided for Common slab (Record of agreement / Change management available?) which requires additional cost of 2 to 5 times- Not considered for further drill down as this was not due to wrong considerations during tender? to check with Electrical Tender lead
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