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marks of the mold are squared over on to the inside flange of the channel frame and from the heel of the frame the distance is measured for the center of the hole as shown at "a" Fig. 14a. TAE Marine REVIEW mark being squared over from the mold to the flange of the channel floor and from the heel of the channel the center of the hole is measured "a" Fig. 14a, care being taken that not Oo oO oO Oo Oo oO O o oO oO BuiGe BanekeT a) ° io ee Tank Sing Stipeauen s : Fig 2r ' 23 out at this part and the holes marked through. In this case it saves any mix-up in changing the holes from the mold which is used for marking - the frames. Fig. 16 shows tank top angle. This angle is fastened on to the girder stiff- eners by means of the brackets shown by Fig. 11. A mold is made for the flange that is connected to the girder stiffeners and bilge brackets and another mold representing the tank top as shown by the greatest number of holes. This angle on the deep floor or belt frame is punched more alike on both flanges for the riveting to the floor plate. : It will be noticed the molds show only the bracket holes on the four- inch flange, this tank top angle being fitted on the main frame clear of the belt frames. Fig, 17 shows the main deck stringer beam plate. This plate is fitted under the main deck stringer on every frame in the side tank, the one mold being suitable for all the brackets, The strip on top shows the piece for the flange rivet holes to the stringer plate. Fig. 14 shows the channel floor molds, one mold for the web and another for the shell holes. The holes for the girder angles on top of the channel floors are marked "a," this . less than the diameter of the hole re- mains from the edge of the flange to rivet hole. a ee Fig. 15 shows the bilge outside plate. The mold for the shell holes is packed ---- Fig. 24 =F} * This plate is flanged top and bottom. Fig. 18 shows mold for channel brace between tank top and main deck stringer in side tank and Fig. 19 shows bracket plate for same, which are