civil contractor turnover

" If a cotractor receive a contract from govt. to built a road. so how the turnover is calculated" 

Percentage of total work completed during the end of financial year, may be as cerified by an architect, or as per bills raised.

" if total contract amount for a FY Rs. 1.85 crore. is he is liable for tax audit. In which form his ITR is submitted."

No requirement of tax audit if income asseessed u/s. 44AD, can file form 4 for AY 2017-18

Thanks Sir