Accounts Receivable (Details) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Summary of accounts receivable
Total gross receivables	$ 623,540	$ 458,825
Less: allowance for doubtful accounts	(174,430)	(174,430)
Total net receivables	449,110	284,395
Billed SG Block sales [Member]
Summary of accounts receivable
Total gross receivables	278,709	207,390
Billed Engineering services [Member]
Summary of accounts receivable
Total gross receivables	250,777	216,535
Billed Project management [Member]
Summary of accounts receivable
Total gross receivables	$ 94,054	$ 34,900