THE NUMBER OF RIVETS REQUIRED IN EACH LEG ON EACH SIDE OF THE CUT IS DETERMINED BY THE WIDTH "W", THICKNESS OF FRAME MATERIAL "t" AND RIVET DIAMETER "d", USING TABLE 4-5 (FOR 17 ST) IN A MANNER SIMILAR TO THAT FOR STRINGERS, FIG. 4-22

NOTE (b), TABLE 4-5 INDICATES THAT ONLY 60% OF THE NUMBER OF RIVETS SO CALCULATED NEED BE USED IN SPLICES IN INTERMEDIATE FRAMES.

"L" SHOULD BE MORE THAN TWICE W2

THICKNESS OF SPLICE PLATE GREATER THAN THAT OF FRAME.

FIGURE 4-24-Example of splice of intermediate frame (material-17ST AL alloy).

FIGURE 4-25-Typical methods of repairing cracked leading and trailing edges and rib intersections.

FIGURE 4-26-Typical methods of replacing cracked members at attings.

FIGURE 4-27-Typical methods of repairing cracked frame and stiffener combinations.

NOTE USE SAME MATERIAL, NEXT HEAVIER GAUGE FOR REINFORCEMENT.

FIGURE 4-28-Typical repairs to rudder and to fuselage at tail post.