TM 9-2320-387-24-2
1.
ALUMINUM REPAIR (Cont’d) 1
c. Rivet Patterns.
1. Rivet patterns are denoted by rivet spacing and rivet edge distance. Rivet edge distance is the
distance from center of rivet to nearest edge of sheet. Rivet spacing is defined as the distance from center of
rivet to center of adjacent rivet.
2. Required rivet spacing is determined by strength needed in the joint. A general feel for strength
required can be obtained by inspecting rivet patterns in surrounding areas. Body repairs made using single
rows of rivets should be performed using rivet spacing not greater than 1.5 in. (3.8 cm) and not less than
0.625 in. (15.9 mm). Use 1 in. rivet spacing as a general practice for repairs. Rivet spacing used in original
construction may be greater due to additional strength obtained by using epoxy adhesive. Do not use rivet
edge distances less than 0.375 in. (9.5 mm).
3. High-strength joints or large area patches may require use of double or multiple rows of rivets to
obtain sufficient strength.
\
D=DlAMElEROF
,:
RIVET (PREFERABLY
ABOUT 3 X THICKNESS
OF THICKER SHEET)
DOUBLE ROW RIVETING PATTERN
TRIPLE OR MULTIPLE ROW RIVETING PATTERN
33-11
