why are soldiers forbidden to march in a group in the bridge???

Question

I guess there is some scientific reason behind it....but I am still in confusion...

Answer 1

The impact of every soldier step is multiplied and they were afraid it might cause the old style bridges to collapse.

Vet-USAF 44MMS

Answer 2

not only soldiers but any group of people marching across a bridge should/not march in time together due to the fact that the bridge could collapse.The proper way to march across is in whats called a rouse step. Simply put,do not march in time just walk naturally at your leasure.I have never heard of bridge falling down for this reason.

Answer 3

Route Step is used to cross bridges. Reason, back in the day when farmer bob made a bridge across a river he didnt do it that well. Regardless of myth busters, if you have 100 troops pounding on the bridge at the same step, something could give. Better safe than sorry.

Answer 4

Marching in step to between the organic frequencies of vibration a bridge would have would reason the bridge to absorb potential cumulatively from marching infantrymen ensuing in bridge injury or destruction. 1831 cavalry troops have been marching in step in the time of a suspension bridge close to Manchester, England, while the bridge collapsed. on the grounds that then troops have been ordered to break step (to no longer march in cadence) while crossing bridges. while infantrymen march in cadence in the time of a bridge, the marching would flow a organic resonance frequency of the bridge. in spite of the incontrovertible fact that for the time of user-friendly terms a small quantity of potential is added with each step, using resonance result this potential would be saved. as a effect, the bridge will cumulatively take in potential from the marching men, increasing the oscillation amplitude interior the bridge (in basic terms as pushing somebody on a swing, in cadence, advance the amplitude of the swing). sufficient potential could be added this thank you to wreck or wreck the bridge. in reality, a concrete suspension bridge, the Tacoma Narrows Bridge, became into destroyed via resonance vibrations set up via winds appearing on the bridge. at present's bridges are built to dodge or shrink this manner of wind resonance effects.

Answer 5

Because it is thought that the marching might set up a resonant frequency in the bridge and make it collapse.

Myth Buster aside.

The US military still does not march across bridges.

They go to route step ( basicly just regular walking) when crossing bridges.

Ex SSGT USAF

Answer 6

Sorry folks, NOT a myth. Certain bridges WILL in fact sway when any large group of people cross in step with each other. To make matters worse, the swaying tends to cause people to move in unison with it in order to keep their ballance, amplifying the swaying.

http://www.riverdeep.net/current/2000/08/082900t_bridge.jhtml

Answer 7

there's a myth that if soldiers march on a bridge the bridge will collapse because of the vibrations and rhythm of the feet pounding on the ground at the same time.

Answer 8

Old wives tale that the harmonic rhythm of the marching in step with one another will cause the bridge to vibrate out of control and collapse.

Myth Busters show tried it out.

Answer 9

because usually bridges are easy targets for enemy fire. if they are trapped in the bridge, enemies could easily close both ends of the bridge

Answer 10

it's an urban legend that the rhythm of the marching will start a bridge swaying and eventually collapse. you can see this tested on Mythbusters on Discovery Channel.