FM 5-277 PDF

DISTRIBUTION RESTRICTION: Approved for public release; distribution is unlimited. *This publication supersedes TM , 3 August FM PREFACE. This manual is intended for use by engineer commanders, staff officers, combat engi- neers, and bridge specialists who. M-2 Bailey Bridge (FM ) [Department of the Army] on *FREE* shipping on qualifying offers.

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File:FM (SUPERSEDES TM ).pdf – RadioNerds

The number of jacks needed to jack down the end of the bridge is shown in Table page TRANSOM CLAMP The transom clamp is the same as that used in the M2 bridge except that the width across the top has been reduced slightly to prevent the arm from interfering with the vertical 52-77 frame used in the bottom story of triple-truss bridges. The trusses may be single-or doublestory assembly, as shown in Figure The cm truss to bear will then be overstressed before the last truss can be fully utilized.

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The timber blocking must extend at least 1 foot If a temporary pier can be built in the middle of the gap to support the cantilevered end, the bridge can be launched as FM a single-story platform just below the near-bank seat. Insert chord bolts and upper panel pins.

Looking for PDF of TM 5-277 M1 (or M2?) Bailey type Bridge

The bridge load, must be underslung unless the reinforced however, must not exceed the crushing outer girder is also triple-story; otherwise, strength of the timber. Type 4 provides 71 tons 64 metric tons —base plate, 57 tons 52 metric tons —rocking roller.

Some of the longer, spans, however, must be launched incomplete to reduce the launching weight. They prevent the transoms supporting multiple-length ramps from over- 12 FM turning and spread the transom load over the ground. It is used to pin the end posts of the outer and middle trusses in a triple-truss bridge.


Ramp sections must be level with the bridge deck. Also add timber blocking under the cantilevered end of the panel to eliminate a reversal of stress in panels near the end of the bridge as a vehicle moves onto the bridge.

These markers help guide drivers to and through the bridge and help to keep traffic moving steadily. The gap is measured from the toe of the slope of one unprepared abutment to the toe of the slope of the other. When using a bulldozer, bolt ribbands at the tail of the bridge so they extend beyond the end of the bridge.

Engineer Equipment

Position ramps and add decking Figure Note: Insert chord bolts and panel pins. Gap is 56 feet Place bearings on baseplate as shown in Figure The maximum allowable slope when the grillage is dug in so that it bears on for a Bailey bridge is 1 to They can be pushed or pulled across by a wincn line.

During assembly of the bridge, it supports the bearing block of the rocking roller explained later in this chapter. Each bay of the bridge contains 13 chess, which lie across 5277 stringers and are held in place by the buttons. They enable the end posts to be fitted after the launching nose has been removed and allow damaged end posts to be replaced.

Check jacks to ensure that they have the same manufacturer’s name. Each bay load truck contains all the parts, except transoms, required for one bay 10 feet 3. Approaches should require little preparation. Also add timber blocking under the cantilevered end of the panel to eliminate f reversal of stress in panels near the end of the bridge fk a vehicle moves onto the bridge. Use one template under each roller. When all three stories are above the decking system, f top chord of the upper story must be braced laterally with transoms and sway braces.


The number of trailers is 40 percent of the number of trucks. The number of rollers in each row depends on the type of bridge. Due to the size and weight of components, personnel are advised to use extreme care when handling them.

The report includes Location of site. Therefore, the safety setback is 1.

Chord bolts ffm couplings, flow regulator, and a secure fixtures to the panel lower chord. Normally this plane is level, but a slight inclination, not to exceed 30 to 1 slope along the line of the bridge, is permissible. Georgia fourth-grade spectrum puzzle Photos kernel: Design tm Bailey to span the gap shown in Figure Launching-nose links are necessary if the far-bank seat is low enough to require the use of block and tackle on the near bank to prevent the bridge from running away when the balance point passes the rocking rollers.

B A I L E Y B R…

The composition of the nose depends on the length of f, bridge and the type of assembly. Construction starts from the center point inward first in bottom and then in of the bridge, and panels are added toward 1 Remove footwalk if any. The slope of the ramp must not exceed 10 to 1 for loads up to and including 50 tons, and 20 to 1 for loads over 50 tons.