I too was surprised to find no guidance in the AFM, Performance Manual or Operating Manual for the type I am considering.
You're obviously holding your type close to your chest - fair enough - but both the major manufacturers publish the airport data requirements in detail on their website. The things cover include terminal size, turning radii, ground servicing, pavement strength etc.
Stuff you won't find in your average AFM as it's not (generally) stuff for pilots - it's for tech ops people.