Technical specification for designing and establishing a pharmaceutical factory

I am looking for international norms or code or guidance for the technical specification for designing and establishing a pharmaceutical factory especially an aseptic department.
Covering the construction and engineering works like: (the kind of material allowed in clean room class 100& class 10000, the drainage system, the gas piping details, etc.,)
Could you please provide me any helpful information regarding to my inquiry.
When I searched online I found the GMP, SOP, ISO, HACCAP, but all previous information covering the production stage not the establishing.

Best regards
Eng. Darwish

you covered on fully SS items in the Class 100 and Class 10000 area and always used to SS pipeline is most effective and reliable for purpose of gas facility and one more thing my suggestion to you please avoid drain point in this area of Class 100 & 10000. Because you put it drain point in this areas is not able to maintain in this classification is not meet to regulatory requirements for environmental programme. And must be floor coating in E-Poxy.