. The elements of railroad engineering . ^5100\ 6 CI 5- Z&. ^-C^x, 15[ J20 tm^^iTo ^> J4Q, 22Ih. Scale 1=6Scale i^j. - « ^ 100 lb. Fig. 228. ing beams with overhanging studs, the maximum bending moment,whether positive or negative, should be used. In the present case, themaximum negative/, or /ij, is less than the maximum positive/, orc i; therefore, the maximum negative bending moment is also lessthan the maximum-positive moment. 492 STRENGTH OF MATERIALS. Example.—Fig. 228 shows a beam overhanging both supports,which carries a uniform load of 15 pounds per foot of length, and hasfive conc
. The elements of railroad engineering . ^5100\ 6 CI 5- Z&. ^-C^x, 15[ J20 tm^^iTo ^> J4Q, 22Ih. Scale 1=6Scale i^j. - « ^ 100 lb. Fig. 228. ing beams with overhanging studs, the maximum bending moment,whether positive or negative, should be used. In the present case, themaximum negative/, or /ij, is less than the maximum positive/, orc i; therefore, the maximum negative bending moment is also lessthan the maximum-positive moment. 492 STRENGTH OF MATERIALS. Example.—Fig. 228 shows a beam overhanging both supports,which carries a uniform load of 15 pounds per foot of length, and hasfive concentrated loads at distances from the supports as marked inthe figure. Required the reactions of the supports, the maximumpositive and negative bending moments, and the maximum verticalshear. Solution.—Construct the force diagram and equilibrium polygonin the ordinary manner, continuing the latter to b and a, points on theverticals passing through the ends of the beam. Draw ^//and agparallel to / C and P O respectively, intersecting the verticals throughthe points of support in h and g. Join g and //, and draw
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
