Respondent was not qualified by education, technical knowledge or experience to perform architectural work under his Engineering Registration, nor was the work incidental in violation of A.R.S, § 32-128(C)(4) as it relates to A.AC. R4-30-301(17). Respondent demonstrated gross negligence in the practice of his profession in violation of A.R.S. § 32-128(C)(2). Respondent Firm practiced or offered to practice a Board-regulated profession without Board registration in violation of A.R.S. § 32-141.