FORMULA SHEET Rectangular cross-section: Circular cross-section: √ ( ) STATIC DESIGN : MSST: { ⇒ ⇒ ⇒ DET: √ √ ( ) ( ) ( ) ( ) (spatial) √ √ (planar) DCMT: { ⇒ ⇒ ⇒ BCMT: , MMT: { ⇒ ⇒ { | | ⇒ | | ⇒ ( ) ⇒ FATIGUE DESIGN : { Surface factor : Load factor : { Temperature factor: Reliability factor: Size factor : For axial load: For bending : { For rotating solid or hollow shaft, , for nonrotating solid or hollow shaft , for rectangular cross-section , √ ( ) ( )