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D straké 2.3... 44.00 E strake ov... 6... Ne 40.20 Gstrake 3.0. 40.20 H ostrake 12.0... eg 36.09 J strake os, 38.87 fo ostrake sc ae 48.69 i strap--.4 19.50 M strake ~42.28 pqtiare. inches ..0, <3 | 460.75 26 ALORS. |. Geeseehegl ee ee 11,979.50 2 23,959.00 In this example of the shell plating it will be observed that the strength of the rivets nearly doubles the strength of the plating across web frame No. 6, the weakest section. Fig. 44 shows the expanded hopper plating, including the center keelson and side tank top. The center keel- son shows the keel and top angles as well as the center keelson plating. The rider shows the half of that strake with the number of 34-in. di- ameter rivets resisting or under shear- | ing strain. The 2d strake, B, shows girder, A, the butt is marked AGB. The 3d strake, C, shows B_ girder with the butt marked BGB. The 4th strake, D, shows C girder with butt marked CGB. The 5th strake, E, shows the line of girder DD and location of bub DGB. This girder is not connectéd to the tank top like the other girders, A, B - and C, so that there are no rivets to shear through the tank top. There is nothing to shear on the 6th strake, F, except the rivets in seams and butts. The rivets on the 7th strake, G, must be sheared in four frames as well as rivets in the tank side top angle, seam and butt. The tank side top plating shows the number of rivets which resist shear- ing. The following rivets show number of tons which resist shearing on the top and side tank plating: Center keelson 37 rivets 7-in. dou- ble shear 37 X 26 = 962 tons, Center keelson 26 rivets 34-in. sin-- gle 26. 12 ==" 312tons: Center keelson 33 rivets 7/7-in. sin- gle 33 X 15 = 495 tons. A strake 83 rivets 34-in. diameter 83° X 12 = 996 tons. - TAE Marine. REVIEW 39 . a 2 cal ad G : 'Ze % a P 7 , STOTT SSN ES srrs fh f! / i Eade Asch | | ae Giaaar LX. | oo 4. FiROsk | Ledice |b: Foca by sles Ses pe | Crean. | are ea be ond pond bans |ticoce 8 ee it eu It aH. TT ae Poses eo 086 Tepanckas Pre i | a | £e sitet Ph PO I RO AS So 09000 ° o.|[€98 0000000 oo 6 0 60 0 © OO nO O58 eso OF SONS Ol enie 0 650) wee SraeBoarn Siok wes Fig. em. ° O02 ° e9o00000 09000 CO 29,.0 000000 e000 000 °o ° ° ° ° ° eo00;|000 e900000