by Ageless » Sun Sep 20, 2009 1:51 pm
EDGE DISTANCE.—The edge distance for all rivets, except those with a flush head, should not be less than twice the diameter of the rivet shank nor more than four times the diameter of the rivet shank. Flush-head rivets require an edge distance of at least 2 1/2 times the diameter. If rivets are placed to close to the edge of the sheet, the sheet is apt to crack or pull away from the rivets. If they are placed too far away from the edge, the sheet is apt to turn up at the edge.
I can't comment on spacing since I only worked on really big airplanes (747)
Strangers on this road we are on; we are not two, we are one - Raymond Douglas Davies