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3. CONTRACTS IN PROGRESS (Tables)
12 Months Ended
Aug. 31, 2017
Contractors [Abstract]  
Cost, estimated earnings and billings on uncompleted contracts
    2017     2016  
Revenues earned to date on uncompleted contracts   $ 7,162,360     $ 2,557,507  
Billings to date on uncompleted contracts     (5,898,236 )     (2,093,476 )
    $ 1,264,124     $ 464,031  
Schedule of contracts in progress
    2017     2016  
Revenues in excess of billings   $ 1,481,082     $ 694,131  
Billings in excess of revenues     (216,958 )     (230,100 )
    $ 1,264,124     $ 464,031