Accounts Receivable (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Summary of accounts receivable
Total gross receivables	$ 3,880,762	$ 3,431,522
Less: allowance for credit losses	(963,116)	(795,914)
Total net receivables	2,917,646	2,635,608
Total net receivables	2,917,646	2,635,608
Construction services [Member]
Summary of accounts receivable
Total gross receivables	2,293,187	1,391,555
Engineering services [Member]
Summary of accounts receivable
Total gross receivables	86,388	86,264
Medical [Member]
Summary of accounts receivable
Total gross receivables	679,446	1,157,819
Retainage receivable [Member]
Summary of accounts receivable
Total gross receivables	635,049	615,136
Other receivable [Member]
Summary of accounts receivable
Total gross receivables	$ 186,692	$ 180,748