Contract mein yahi hota hai.... Engineer estimate banata hai minimum wages ke hisab se....usme ek limited manpower Li jati hai....jyada manpower ka estimate banaya to Audit objection aa jata hai....even tender cancel ho jata hai.....fir alag alag contractor Rate quote karte hain....jo minimum rate daalta hai usko tender diya jata hai.....chahe negative rate ho......bas fir kaam suffer hota hai......