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. . <br /> i <br /> � <br /> Thrlough bolts at pylon <br /> � say bolts are spaced horizontally at 3 inches <br /> Bolt tension due to force on sign face=Vx/4 bolts= 56.8 Ib tension/bolt <br /> �I Bolt tension due to Mx= Mx/0.25 ft/2 bolts= 604 Ib tension/bolt ' <br /> Bolt tension due to My=My/1.92 ft/2 bolts= 17.0 Ib tension/bolt I <br /> total 678.0 Ib tension/bolt ' <br /> Weight of EMC= 538 Ibs � <br /> vertical shear in bolts=wt of EMC/4 bolts= 134.5 Ib shear/bolt <br /> horiz shear in bolts=Vy/4 bolts= 12.3 Ib shear/bolt I� <br /> Resultant shear=( (vert shear)Z+(horiz shear)Z)l�Z= 135 Ib shear/bolt I <br /> � <br /> For ASTM A307 bolts <br /> AISC Steel Manual, 13th ed,Table J3.2 <br /> Nominal tensile stress, Fnt= 45 ksi <br /> Nominal Shear Stress, Fnv= 24 ksi <br /> S2= 2.00 <br /> for bolt dia= 0.25 inch <br /> Bolt area= 0.0491 sq in <br />' ft=axial tension/bolt area/1000= 13.81 ksi <br /> fv=resultant bolt shear/bolt area/1000= 2.75 ksi <br /> For'combined tension and shear <br /> F'nt=1.3 Fnt-SZFnt fv/Fnv<=Fnt <br /> F'nt= 45.00 ksi <br /> F'nt/S2= 22.5 ksi>=ft;OK <br /> Fnv/S�= 12 ksi>=fv;OK <br /> I <br />�i <br /> 5 of 6 9/12/16 <br /> l <br />