delta Posted 19 December , 2017 Share Posted 19 December , 2017 (edited) Grateful for assistance on confirming the name of the London bridge )image below) over which C Coy Tank Crewmen were marching in Aug 1916 Could one of the buildings be the City of London School? Edited 19 December , 2017 by delta Link to comment Share on other sites More sharing options...
MerchantOldSalt Posted 19 December , 2017 Share Posted 19 December , 2017 This is the original Waterloo Bridge built in 1817 and demolished in 1945 replaced by the bridge that is there to this day. TH Link to comment Share on other sites More sharing options...
Guest Posted 19 December , 2017 Share Posted 19 December , 2017 Yes- it is Waterloo Bridge- the buildings immediately behind and to the left (the northern end of the bridge) are those of the Duchy of Lancaster, which are still there .City of London School is by London Bridge in the City (with war memorials-if you still wish to wander round the City sometime!!) Link to comment Share on other sites More sharing options...
johnboy Posted 19 December , 2017 Share Posted 19 December , 2017 captioned as Waterloo Bridge http://www.bournemouthecho.co.uk/news/14614173.The_torment_of_Basil_Henriques__commander_of_a_7_man_tank_crew_during_the_Battle_of_the_Somme/#gallery1 Link to comment Share on other sites More sharing options...
pjwmacro Posted 20 December , 2017 Share Posted 20 December , 2017 I always understood it to be the old Waterloo Bridge. And i'd say comparison with Merchant Old Salt's photo is pretty conclusive. Best, Paul Link to comment Share on other sites More sharing options...
stu Posted 21 December , 2017 Share Posted 21 December , 2017 Definitely Waterloo Bridge, the men are marching south, the buildings left to right are Savoy Hotel, Institute of Electrical Engineers and Brettenham House. Link to comment Share on other sites More sharing options...
delta Posted 21 December , 2017 Author Share Posted 21 December , 2017 Many thanks to you all Link to comment Share on other sites More sharing options...
JMB1943 Posted 22 December , 2017 Share Posted 22 December , 2017 I am surprised that they do not appear to have broken step, or was that required only for suspension bridges ? Regards, JMB Link to comment Share on other sites More sharing options...
Guest Posted 22 December , 2017 Share Posted 22 December , 2017 17 minutes ago, JMB1943 said: I am surprised that they do not appear to have broken step, or was that required only for suspension bridges ? Regards, JMB One of the other main London bridges-either Chelsea or Albert (next to each other anyway) does still have a sign that troops must break step-It is an early suspension bridge. Link to comment Share on other sites More sharing options...
JMB1943 Posted 22 December , 2017 Share Posted 22 December , 2017 GUEST, That was exactly what prompted my question. I have walked across both Albert & Chelsea bridges many times, and as a young lad had asked my father about it. Interesting that the sign still stands. Regards, JMB Link to comment Share on other sites More sharing options...
Guest Posted 23 December , 2017 Share Posted 23 December , 2017 (edited) 3 hours ago, JMB1943 said: Voltaire, That was exactly what prompted my question. I have walked across both Albert & Chelsea bridges many times, and as a young lad had asked my father about it. Interesting that the sign still stands. Regards, JMB Of course, the problem is accentuated in Chelsea, given the proximity of the Guards-who have a reputation for marching in step-which exacerbates the problem. We have also the new Millennium footbridge across the Thames directly south of St. Paul's,which swayed greatly even with normal walking-Apparently, once a bridge starts swaying, humans adjust their step anyway-which has the effect of making the problem worse-humans change to fit in with the sway,so it worsens the problem but makes individual walking easier.So the bridge had to be "de-engineered"-put in some less than perfect engineering quirks to squeak out the problem One solution was tried recently- for the first time the Royal Navy mounted guard at Buckingham Palace. Although I grew up in a navy town, Plymouth, and my father's family were a navy family since before 1700, it pains me to say that no bridge would ever sway much if the lads of the Grey Funnel Line marched across- the navy just cannot do marching dill with any precision, so Albert and Chelsea Bridges would be competely safe. Edited 23 December , 2017 by Guest Link to comment Share on other sites More sharing options...
stu Posted 23 December , 2017 Share Posted 23 December , 2017 The signs regarding troops breaking step are on the tollbooths at the northern side of Albert Bridge. I regularly cross the bridge, if you are sitting in the queue of traffic heading north and your vehicle is close to the bridge joint with the embankment, you can actually feel the bridge move slightly when a vehicle approaches from the other direction. Definitely one of London's prettier bridges. Link to comment Share on other sites More sharing options...
delta Posted 23 December , 2017 Author Share Posted 23 December , 2017 Superb information - thanks for sharing Link to comment Share on other sites More sharing options...
Knotty Posted 23 December , 2017 Share Posted 23 December , 2017 This link will take you to the incident which gave rise to the issuing of the order which pre-emptive the situation happening again. https://en.m.wikipedia.org/wiki/Broughton_Suspension_Bridge Link to comment Share on other sites More sharing options...
Ron Clifton Posted 23 December , 2017 Share Posted 23 December , 2017 There is a small bridge in Regent's Park, near the Zoo, which is basically just a long flat slab with no parapets, over a fairly narrow piece of water. I was told that its strength was tested by marching a party of soldiers - probably Guards - across it without breaking step. It survived the test. Ron Link to comment Share on other sites More sharing options...
Guest Posted 23 December , 2017 Share Posted 23 December , 2017 (edited) And just to cheer you up in this season of goodwill- in case you wonder what happened to Chas and Dave: The Wembey Stadium test using 1250 men is on You Tube https://www.britishpathe.com/video/a-practical-test-wembley Edited 23 December , 2017 by Guest Link to comment Share on other sites More sharing options...
gmac101 Posted 26 December , 2017 Share Posted 26 December , 2017 The root of the problems with suspension bridges is their natural frequencies. All structures have natural frequencies at which they will vibrate with potentially large deflections if forced at these frequencies . For the large majority of structures their natural frequencies are beyond the frequencies that they are typically forced by (The main example of this outside suspension bridges is tall buildings in eathquakes). If the natural frequency of the suspension bridge deck in the vertical plane is around march step (1 step every second? I don't have much any experience of marching) then the soldiers will excite it and it will begin to move significantly more than normal, these deflections can result in overloading of the suspension wires and if they don't fail in the first instance the large motions will potentially cause significant fatigue damage (thats another post ) which will shorten the bridges working life. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now