1960's office building

[Northern Uproar]

If an office building was thrown up in the 60's (I'm guessing based on construction and it had an OSRA cert which was never converted to an FP Act Cert), what was the likely design standard used? I'm assuming it was a CP of some kind.

Thanks

[kurnal]

It might have been CP 3:Chapter IV:Part 3- you may find it in technical indecies.

Sadly I dont have a copy of this one, In 1983 BS 5588 part 3 was published.