Caterpillar Performance Handbook, January 2017, SEBD0351-47

Frame Selection

On-Highway Trucks

Standard Frame Not Reinforced SM = 21 in 3 RBM = 2,520,000 lb

Optional Reinforced Frame SM = 28.82 in 3 RBM = 3,458,580 lb

Optional Reinforced Frame SM = 40.45 in 3 RBM = 4,865,748 lb

SM= SectionModulus is based on the cross sectional area of the frame and its distance from the neutral axis of bending. RBM = Resistance to Bending Moment = SM × Steel Strength = SM × 120,000 psi for All Cat Frames.

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Edition 47 12-17