Hi,
Most British aircraft have structural sections in their manuals. For example the Dove and the Heron have a 60 page section detailing various structural repairs and minimum structural integrty dimensional checks.
If you are in Sydney then you can get a look at these manuals over at the Bankstown Aviation Museum - they have both types on display and I believe they also have the repair manuals for these aircraft.
Your aircraft being American doesn't have the same detail that only the British could ever do. Something to do with their very over the top CAA.