mjamille28 they seem to me a civil engineering or structural engineering BS standards. They are a material specs. Americal ASTM code is better than BS and most widely used in this regard.

Sorry i myself have changed and i am trying to change much of the design criteria documents in my company to be forwarded to the clients to american codes like ACI, AASHTO etc as i am trained in that environment.

Not much knowledge of BS codes as well as i did not study there in my country and abroad but for sure US codes are much better becasue of many reasons.