CIRB (AM)
The term "CIRB (AM)" likely refers to the Construction Industry Research Board (Advisory Memorandum).
The Construction Industry Research Board (CIRB) is (or was, depending on context) a body that conducted research and provided guidance to the construction industry. An "Advisory Memorandum" (AM) from the CIRB would have been a document offering recommendations, advice, or information on a particular topic relevant to the construction sector. These memorandums could cover a wide range of subjects, such as new technologies, best practices, regulatory changes, or industry trends. The exact nature and purpose of a specific CIRB (AM) document would depend on its subject matter. Because advisory memorandums are specific to their date of publication, older ones may no longer reflect current best practice. Always consult current regulations and standards.