Shipbuilding in iron and steel / a practical treatise . . Fig. 222. 28o Miscellaneous Details. Chap. XV. only extends 3 feet beyond the side, and the remaining 8 feet ofthe length of the arm is made up of a separate plate secured to. Fig. 223. the main plate by double-butt straps, treble-chain riveted as shownin the athwartship section. The beam-arm is of I-shaped section,the web-plate being |-inch thick, and the double angle-irons onthe edges 4 by 4 by f inches. Inboard the beam is of uniformdepth except for a short length close to each side, where it isslightly increased, and the outboard po


Shipbuilding in iron and steel / a practical treatise . . Fig. 222. 28o Miscellaneous Details. Chap. XV. only extends 3 feet beyond the side, and the remaining 8 feet ofthe length of the arm is made up of a separate plate secured to. Fig. 223. the main plate by double-butt straps, treble-chain riveted as shownin the athwartship section. The beam-arm is of I-shaped section,the web-plate being |-inch thick, and the double angle-irons onthe edges 4 by 4 by f inches. Inboard the beam is of uniformdepth except for a short length close to each side, where it isslightly increased, and the outboard portion is tapered a little indepth toward the end. Where the beam passes through the side,the plating is strengthened by a frame of angle-iron marked a, ofwhich a front view is given. The horizontal knee-plates, h, h, arefitted in order to increase the strength of the connection betweenthe side and the beam, and to give lateral stiffness to the beamat this part. In this ship also the spring-beam is of wood, andthe shoulder for the reception of its end is formed as in the pre-ceding case. Before passing on to consider a third mode of fittingpaddle-beams, it may be added that where box-beams are employedand are continued out thr


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Keywords: ., bookcentury1800, bookdecade1860, bookpublisherlondo, bookyear1869