. Railway mechanical engineer . d theefficiency through row D is found the same as for row B ofthe sextuple seam, except that the tensile value of four rivetholes is deducted and the shearing strength of four rivetsadded. If the shearing value of a rivet is more than thestrength removed by a rivet hole, it is useless to do anyfiguring for this row as it is at once noted that the efficiencywill be more than in the outer row. The efficiency for theshear of the rivets as a whole is also found by the samemethod as for the sextuple riveted seam, except here theshear of 20 rivets (8 in double shear
. Railway mechanical engineer . d theefficiency through row D is found the same as for row B ofthe sextuple seam, except that the tensile value of four rivetholes is deducted and the shearing strength of four rivetsadded. If the shearing value of a rivet is more than thestrength removed by a rivet hole, it is useless to do anyfiguring for this row as it is at once noted that the efficiencywill be more than in the outer row. The efficiency for theshear of the rivets as a whole is also found by the samemethod as for the sextuple riveted seam, except here theshear of 20 rivets (8 in double shear and 4 in single shear)is compared with the strength of the solid plate. As for further points to be considered in calculating seamefficiencies, attention is called to the distance from the rowof rivets to the edge of the welts (both inner and outer) orthe dimension L on Figs. 1 and 2. In a well designed seamthis distance or dimension L should always be great enoughto insure that the metal between the rivet and the edge of LONGklTUOlN*,!. SEAMS =*=.FI.¥.-| T c p L M M E w W 1^ S L M B ii 1^ 5 ijj \k ^ i 7t ^ &i7 2| 1^ l| ik 705 ^ if & l| i i 1 =1 Wf 84,5 3 li li 4^ 687 f^ 1? <b |5 ^\ z\ k 3 14? 84,3 3 Ii l4 4^ 68,7 a. 1 % If d |i ^\ r-^ i, .9 I4f 5 li 1*4 44 687 ^ iS 1? & IP \\ 1% 9 W? 84,3 5 Ia 1*4 &6 7 ll i-n 3 1 3\ \S\ 844 iA 1^ 1*4 4*4 63 1* 1^ 2 S || ^\ 5i ^c^ 17? S^ Ik i I 53 66i> T ip Irn ?, ft In ^ i\ fi 10^ n^ 84 q if, 1^, Z S\ ££,. 1^ 1 ?. ft 1^ ?k 3i k io5i 17^ Mi ■Jp 1^ z sk 631 In 1? ? ft II ?.k i\ % m\ 17^ 83,6 3p li^ z 5\ 61,4 k i ?. ft lA zk i\ \ m\ 17^ 83,1 i? 1 z Sa 58. a ^l ?. ft f ^t i\ m% nk 526 3? Ifl z 56-S ? ll 2if 1 i ^1 3f \ li| 4 &i8 3^ li U si 6Zj 1^ \% A 9 ^\ ^l ^P iL \\\ 181 i4 1^4 iA 5*4 l^ k ?\ ?> if ?i ^? 1. »\ 18*4 &2P 34 1% ii S\ 57q 1^ ti, 9 \\
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
