Accounts Receivable (Details) - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Summary of accounts receivable
Total gross receivables	$ 3,473,308	$ 3,880,762
Less: allowance for doubtful accounts	(963,116)	(963,116)
Total net receivables	2,510,192	2,917,646
Construction services [Member]
Summary of accounts receivable
Total gross receivables	2,549,010	2,293,187
Engineering services [Member]
Summary of accounts receivable
Total gross receivables	20,919	86,388
Medical [Member]
Summary of accounts receivable
Total gross receivables	61,393	679,446
Retainage receivable [Member]
Summary of accounts receivable
Total gross receivables	697,382	635,049
Other receivable [Member]
Summary of accounts receivable
Total gross receivables	$ 144,604	$ 186,692