TM 5-5420-280-10
OPERATOR INSTRUCTIONS
RAPIDLY EMPLACED BRIDGE (REB)
NSN 5420-01-481-3959 P/N 12480471
SITE REQUIREMENTS AND LAYOUTS
Site selection for bridging operations depends on several factors and is usually a
compromise of tactical and technical requirements. Determining if the desired site
location is suitable for the construction of a bridge is essential to the success and
safety of the bridge company. A careful survey of the proposed bridge site should be
made by reconnaissance, not the operator/crew. However, the operator/crew must
understand and observe the site requirements when performing bridge operations.
1. Tactical Requirements -- The ability of the US Army to cross a river, gully,
or ditch quickly and efficiently is critical. Where conditions warrant a crossing,
and no other method of crossing a gap quickly is available to advance army
forces, the REB will be used. Site selection is the result of a commander's
strategic decision based on tactical requirements.
undertake a preliminary study and site selection checks to determine the
proposed location of the bridge prior to marking out the site.
of the proposed bridge location.
aerial photographs, and personal aerial reconnaissance. If possible, seek the
advice of friendly local civilians.
(1) Select suitable site.
(2) Select the bridge centerline.
(3) Measure the gap, bank heights, and bank transverse and longitudinal
slopes.
e. Hasty reconnaissance. This is carried out where it is not possible to take
measurements with instruments and where access to the far bank is not
possible. Make best estimates of span and bank heights.
carried out where possible, following standard practice. Measure the gap by
triangulation using an instrument or by a tape. Determine the relative
bank heights by means of a suitable instrument.
