The encyclopdia britannica; a dictionary of arts, sciences, literature and general information . —x), an equation to a parabola. 23. Shiar due to Travelling Loads.—Let a uniform train weighingw per ft. run advance over a girder of span 2c, from the left abutment. When it covers the girder to a dis-tance X from the centre (fig. 41) thetotal load is w(c+x); the reactionat B is QQQQQCJiOra B. R2=w(c-|-*)X^=4c 4c {c+xy -iwl which is also the shearing force at Cfor that position of the load. Asthe load travels, the shear at thehead of the train will be given bythe ordinates of a parabola havingits
The encyclopdia britannica; a dictionary of arts, sciences, literature and general information . —x), an equation to a parabola. 23. Shiar due to Travelling Loads.—Let a uniform train weighingw per ft. run advance over a girder of span 2c, from the left abutment. When it covers the girder to a dis-tance X from the centre (fig. 41) thetotal load is w(c+x); the reactionat B is QQQQQCJiOra B. R2=w(c-|-*)X^=4c 4c {c+xy -iwl which is also the shearing force at Cfor that position of the load. Asthe load travels, the shear at thehead of the train will be given bythe ordinates of a parabola havingits vertex at A, and a maximumP,n„^l at B. If the loadFig. 41. travels the reverse way, the shearing force at the head of the train is given by the ordinates of the dottedparabola. The greatest shear at C for any position of the load occurswhen the head of the train is at C. For any load p between C and Bwill increase the reaction at B and therefore the shear at C by partof p, but at the same time will diminish the shear at C by the whole
Size: 1680px × 1488px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectencyclo, bookyear1910
