Construction of machine shop transmission assembly building transmission and rotor assembly testing facilities heat treatment shop process shop centralized tool store customer hanger package boiler building automobile repair shop compressor house electrical substation building training center workers canteen general maintenance office creche gate complex effluent treatment plant and other misc works including internal water supply sanitary installations drainage internal electrical installations hvac fire alarm firefighting lifts dg sets data networking systems and other specilised electrical and mechanical services for new helicopter manufacturing facility of hindustan aeronautics limited at bidrehalla kaval gubbi taluk district karnataka under phase one stage three