Essentials in the theory of framed structures . upon the members. Note that h and i fallat the same point in the stress diagram, indicating that the member HI has nostress and is superfluous for this particular loading. Note also that the stressesin QF and GP are equal, and that the stress in PQ equals the external load atthe joint. In consideration of these observations develop a general rule by 72 THEORY OF FEAMED STRUCTURES Chap. II which superfluous members may be eliminated before the stress diagram isbegun. 2. The frame in Fig. 44 has been substituted for the solid body of Fig.

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Essentials in the theory of framed structures . upon the members. Note that h and i fallat the same point in the stress diagram, indicating that the member HI has nostress and is superfluous for this particular loading. Note also that the stressesin QF and GP are equal, and that the stress in PQ equals the external load atthe joint. In consideration of these observations develop a general rule by 72 THEORY OF FEAMED STRUCTURES Chap. II which superfluous members may be eliminated before the stress diagram isbegun. 2. The frame in Fig. 44 has been substituted for the solid body of Fig. a stress diagram. Note that the magnitude-direction diagram for theexternal forces, which constitutes the beginning or foundation of the stressdiagram, has already been constructed in Fig. 2^d. 3. Substitute a frame for the solid body in Fig. 30 and draw a stress diagram. 4. The truss in Fig. 45 is supported by vertical reactions at A and B. Drawa stress diagram. Compute the stresses in X, Y and Z. jie 1 ^. -7 V->k- -7-6^- ^^. Fig. 45. 3000

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Keywords: ., bookcentury1900, bookdecade1920, booksubjectstructu, bookyear1922