Bridge Assembly Swinging Bridge Method

Table 2-14. Bridge Boats Required for Anchorage.

Figure 2-22. Bridge Assembly Swinging Bridge Method (Sheet 1 of 3)

TM-5-5420-209-12 Cargo Pallet Ribbon Bridge Transporter (NSN 5420-01-008-7436) Manual
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TM 5-5420-209-12 Figure 2-21. Bridge Assembly Successive Bay Method (Sheet 4 of 4). 2–22. Bridge Assembly Swinging Bridge Method. The purpose of the swinging bridge method is to allow connection of the bays along or near the shore where the current will be considerably slower than in the main flow, therefore making bay-to-bay connection easier. The bridge is then swung into place. The assembly procedure is similar to the successive bay method. Although this may be the most rapid method of construction, it has certain limitations. For exam- ple: the exact length of the bridge must be known; the path for swinging the bridge must be free of protruding rocks, sand bars or other constructions; there should be no floating debris in water; and launch site must be length of bridge. When constructing abridge using this method the bridge must always be swung upstream. Prior to constructing the bridge, the method for launching and site should have already been established. (1) (2) NOTE Transporters can be used for temporary anchorage. Launch two interior bays (1) and (2) and connect (para. 2-20) and anchor bays just downstream of bridge line. Launch ramp bay (3) and connect to interior bay (para. 2-18). NOTE Bridge boats can be used to hold bridge assembly in place. 2-86

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