First, the frame H was wedged into place and thoroughly fastened by a liberal winding of wire. Next the frames I and J were set in place, and in order to do this we had to remove the upper tie pieces of these frames. Then one frame was hooked in the other, and the two were carried out on the scow under the center of the bridge. Ropes were tied to the ends of the two frames, and they were lifted together, like a wide V, to the position shown in Fig. 318, after which the tie pieces were bolted on again, resting against the ends of the E frames. As an additional security, two sticks were bolted to the under side of the frame H, one at each side of the I and J frames. The bridge was then completed by wedging the frame K under the ends of the D frames, and also placing a stick across each tower under the joints of the D frames. We planned to run our gravity railway across this bridge, moving our platform and trestle to the opposite bank; so instead of flooring our bridge with slabs, we fastened ties across at intervals of 15 or 18 inches. These ties were sticks 3 inches in diameter, which were secured to the D frames.