Shipbuilding in iron and steel / a practical treatise . . -strap. The detailsof this arrangementare shown clearly inFig. 19, p. 24. Therivets which arethere shown on themiddle line servedto secure the heelof the iron pillar tothe floor-plate. Inthis vessel the re-versed angle-ironson the upper edgeof the floor-plateswere run acrossthe middle line,and took the boltswhich secured thewood keelson. In very small andlight vessels, thefloor-plates were fre-quently omitted, and a short piece of reversed angle-iron Mas rivetedto the frame angle-iron to receive the fastenings of the keelsons. In more m
Shipbuilding in iron and steel / a practical treatise . . -strap. The detailsof this arrangementare shown clearly inFig. 19, p. 24. Therivets which arethere shown on themiddle line servedto secure the heelof the iron pillar tothe floor-plate. Inthis vessel the re-versed angle-ironson the upper edgeof the floor-plateswere run acrossthe middle line,and took the boltswhich secured thewood keelson. In very small andlight vessels, thefloor-plates were fre-quently omitted, and a short piece of reversed angle-iron Mas rivetedto the frame angle-iron to receive the fastenings of the keelsons. In more modern vessels built on the transverse system, theframing always consists of three distinct parts, the frame angle-iron,the reversed frame, and the floor-plate. The first of these doesnot differ from that used in earlier vessels, and is formed in lengthswhich, if necessary, are either scarphed or welded to each other, carebeing taken to give shift to the scarphs or welds of adjacent rule with respect to frames, is, that they are to be in as. 78 Transverse and Longitudinal Chap. v. great lengths as possible, fitted close to tlie upper edge of keel, and in all cases to extend to the gunwale; and when butted on the keel (except when double frames or centre continuous keels are adopted), and wherever else butted, to have not less than four feet lengths of corresponding angle-iron, fitted back to back, to cover and support the butts, and receive the plating. If wekled together, the welds to be perfect with not less than 4 feet shifts. The spacing from centre to centre, with single frames, is not to exceed 21 inches, but provided an additional fi-ame be fitted for half the length amidships at opposite sides of the floor- j)l^tes across the keel, and extended to the upper part of the bilges, and riveted to the floor-plates and main frames, and to the bottom plating similarly to the riveting required for the main frames, the si3ace may be increased to 23 inches in ships un
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Keywords: ., bookcentury1800, bookdecade1860, bookpublisherlondo, bookyear1869
