Accounts Receivable (Tables)

9 Months Ended

Sep. 30, 2013

Accounts Receivable [Abstract]

Summary of accounts receivable

	2013			2012
Billed:
SG Block sales	$	472,728		$	207,390
Engineering services		147,764			216,535
Project management		228,632			34,900
Total gross receivables		849,124			458,825
Less: allowance for doubtful accounts		(174,430	)		(174,430	)
Total net receivables	$	674,694		$	284,395