. Design of a railroad viaduct for Overton County railroad . = 55100=?^ THEORETIC RIVET PITCH IN at = 2C60# The live load v;eight on one rail is one wheel (25000f^)distributed over three tiec (42). The corresponding v/eightof track supported by one girder is 700/--, making a totalweight of 257G0ir over 42, or 612r per linear resultant of 2060-^ and 612; is 2150/.The value of a 7/S rivet in bearing on a s/S plate, at15000# per , is 4920#. The required pitch is4920/2150 = at = 1688#Resultant of 1638
. Design of a railroad viaduct for Overton County railroad . = 55100=?^ THEORETIC RIVET PITCH IN at = 2C60# The live load v;eight on one rail is one wheel (25000f^)distributed over three tiec (42). The corresponding v/eightof track supported by one girder is 700/--, making a totalweight of 257G0ir over 42, or 612r per linear resultant of 2060-^ and 612; is 2150/.The value of a 7/S rivet in bearing on a s/S plate, at15000# per , is 4920#. The required pitch is4920/2150 = at = 1688#Resultant of 1638# 612 is 1805#.Required pitch = 4920/l800 = at = 1374#Resultant of 1574 and 612 is 15C4#.4920/1504 = Pitch at * cection. 86G63 :; 1050.:;.^ Resultcnt of 1050# and 612 ic 1215# 4920/1215 = at cection. 64212 = 772# RcEultint of mf; and 612,,f is 985;;. 4920/S85 = at * section. 43817 = 527# Resultant of 527# and 612# is 807#. 4920/807 = LATI^R^.L BRACING,. V/ind load ^ 600# per linear foot of span,V/ind load per panel = 600 x = 465C#Reaction s (600 x )/2 = 20925#Stress in #2 - 4 - 6 - 8 - 10 = -4650#Si = 2C925 X = 29128#32 = 16275 X = 22655# S5 = 11625 X = 16182# S7 = 6975 X s 9710# S3 = 2325 X . 5296#Stress in Si is 29128#. Allowable unit stress is 12000-^ or -P - 13000 - 60L/rL is about 113. P = 13C00 - 570C » 7300r^ per sq. in. 29128/7300 = one angle 6x6x3/8 vbich has an area of sq. intermediate substruts and horizontal member:-■, of inter-mediate cross frames are composed of one angle 6x6x3 of cross frames are composed of one angle3-1/2 x3-1/2 x3/8. END CROSS stress in horizontal neraber = -22500^Tensile stress in diagonal member = 23400rHorizontal member composed of 2 angles 5x3-l/2x7/l6Diagonal member composed of one angle 5-l/2x3-l/2x3/8 5STII>1.:.T?: OP
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Keywords: ., bo, bookcentury1900, bookdecade1900, bookiddesignofrailroad00scha
