The Pakistani Pile Driver- very short video Im not sure of the math, but it certainly works for them and gets the job done! A short video of a Pakistani pile driving team and the construction technique. Notice that the pile driving only becomes effective when the extra man jumps on. Its very finely tuned and the chant is also catchy!! Now, lets analyze the engineering required to accomplish this (please pay attention to the math!!): 6 men x 180 lbs = 1080 lbs static force. Jumping up and down will create a 3 times dynamic effect = 3240 lbs/jump = 1.6 ton thumps. If the pile is tapered to 2 in x 2 in, cross section at the tip = 4 in 2. So, dynamic pressure/thump at pile tip = 3240/4 = 800 psi. Add a man feature will increase to 950 psi, so buy the option! Increase the chant and dynamic force goes up to 5 times to bring max. pressure/thump to 1600 psi for a 7 man team. Quite good and will penetrate hard clay and sandy soil but not hard rock! Pretty ingenious. Just in case you didnt know, the Foremen is the guy on the tambourine. Click on this or paste it on your search engine -- The Pakistani Pile Driver- very short video Im not sure of the math, but it certainly works for them and gets the job done! https://youtube-nocookie/embed/cFb0nLCKypg?rel=0
Posted on: Sun, 09 Nov 2014 04:30:46 +0000
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