Manual for Engineer Troops ...

D. Van Nostrand, 1864 - 275 pàgines

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Pàgina 42 - ... to the logs. When the current of the river in which the raft is to be used is very gentle, the up-stream ends may be on a line parallel to the transom ; but if rapid, they should form a right angle salient up stream, the vertex being in the middle log.
Pàgina 29 - The place of construction may be at a considerable distance from that which the bridge is to occupy, and is frequently on some tributary of the stream to be bridged, out of sight of the enemy's shore. The bridge is constructed parallel to the shore ; siderails are lashed on all except the extreme bays.

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