The D frames were supported near their outer
ends with E frames, which rested on the B and C frames. Fig. 319 shows an
E frame set in position on the landward side of the tower, while two of
the boys are climbing out on the opposite B and C frames preparatory to
setting up the other E frame. A cross stick was now bolted to each D
frame, just beyond the upper ends of the E sticks. This done, the frame F
was hooked in between the ends of B and C, at the shoreward side of the
tower, and its outer ends were supported by frame G, which was hooked over
frame D and the upper ends of frame E. The frame L was then rested on the
ends of frame F and G, and supported the shore end of frame D. A stick
nailed across frame D on each side of the upper ends of frame L served to
hold the latter in place.
Binding and Anchoring the Structure.
As the different frames were coupled together, we bound the overlapping
ends with soft iron wire. The place where frames B, C, E and F came
together was quite a vital point, and we took pains to make the wire
binding at this place doubly strong. As soon as the L frame was in place
we anchored the bridge to shore by running wires from the ends of the D
frame and the ends of the G frame to stakes driven into the banks.
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