AIM 5-4-5, figures 5-4-10 and onward, show some alternatives to the basic T.
Not a complete answer to your question, but...
Bob Gardner

"Roy Smith" wrote in message
...
There's two GPS approaches into KDMW; the RNAV (GPS) RWY 16 and the RNAV
(GPS) RWY 32.

http://www.myairplane.com/databases/...s/05533R16.pdf
http://www.myairplane.com/databases/...s/05533R34.pdf

Both start from off-airway IAF's, with no feeder routes. Both use the
same missed approach fix. Yet, one is marked "Radar Required" and the
other isn't. Anybody have any clue why?

Secondary question -- I thought the concept of these pure GPS approaches
was to lay out 3 IAF's in a T pattern. Why no outside IAF's, and no PT?
Both of these seem kind of ugly if you start them from a course 180
degrees off the FAC.