Essentials in the theory of framed structures . ed in direction. The strain in be is an increase in length, represented by thequantity 4,610; consequently from b we lay off to any conveni-ent scale (not necessarily the scale used in laying off be) bd =4,610, above the point b. The point which was originally atb has now moved to d. The location of d was a simple matter;since according to the hypothesis, the member be (when elongat-ing) had no option except to extend vertically upward. The location of the new position of the point at a is more com-plicated. The member ac lengthens; and since c i
Essentials in the theory of framed structures . ed in direction. The strain in be is an increase in length, represented by thequantity 4,610; consequently from b we lay off to any conveni-ent scale (not necessarily the scale used in laying off be) bd =4,610, above the point b. The point which was originally atb has now moved to d. The location of d was a simple matter;since according to the hypothesis, the member be (when elongat-ing) had no option except to extend vertically upward. The location of the new position of the point at a is more com-plicated. The member ac lengthens; and since c is fixed, theextension is to the left of and away from c. Hence we lay off ae= 3,150. The movement of o is also influenced by the memberab. Hence af is laid off equal and parallel to bd, and fd is 19 290 THEORY OF FRAMED STRUCTURES Chap. VII drawn to represent the original length of ab. The member abis shortened by the strain 2,680; since the point d has beenlocated; therefore, the point/ moves towards d, the amount/g /iT\-^?S7T—3 -f—3ggO/^. 0 +3080 Z +3080 4 +3150 6 +3150 8 +3080 )0 +3080 12 A
Size: 3243px × 771px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectstructu, bookyear1922
