International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 305
ribs of H-inch plank andunited as shown in the figure, breaking joints and fastenedtogether with spikes. The ribs are fitted to the drawing asthe frames are built. The ribs are 4 ft. 1 in. in length, 8 in.in width at ends, and 10 in. in width at middle, the edgebeing trimmed down to fit the curve… … directly under the crown of the arch and fastened to theframe by two cleats D securely spiked to both frame andstrut. Its foot passes between the planks forming the chordto which it is spiked. The brace £ is fastened at top to thestrut with spikes. Its foot passes between the chord planksand is…
Railroad engineering
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