ARMY TM 5-5420-212-10-1MARINE CORPS TM 08676A-10/1-1Section III. RESTRICTED SITESThis section describes the procedures for assembly and disassembly of 2E + 12 bay double story bridges onrestricted sites. A site is considered restricted when the R distance (construction space) is less than the distance given inTable 3-8, 3-15, 3-24 and 3-32.This R distance can be reduced by as much as 3 bays by using launching noses one or two sections longer thanthe standard launching nose and by booming the bridge more frequently. Table 6-29 gives the minimum R distancepossible when using launching nose longer than standard. The R distances do not include length of push bar or vehicle.TABLE 6-23. Minimum R Distance when using longer than standard launching noses2E + No. ofBaysNOSE CONSTRUCTION3N14N15N16N17N18N1130 ft9.1 m230 ft9.1 m330 ft9.1 m430 ft22 ft9.1m6.7 m530 ft24 ft9.1 m7.3 m636 ft30 ft11.09.1 m742 ft36 ft12.8 m11.0 m842 ft36 ft12.8 m11.0 m948 ft42 ft14.6 m12.8 m1054 ft42 ft16.5 m12.8 m1154 ft42 ft16.5 m12.8 m1254 ft48 ft16.5 m14.6 mR Distances above do not include length of push bar or launching vehicle.Since the procedures are very similar to bridges on normal sites, only the steps that are different will be detailed.The operator should be familiar with the General Drills (Chapter 4) and the assembly and disassembly of double storybridges on normal sites before attempting a restricted site build.6-55
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