PILE DRIVING IN PAKISTAN. Hey, it works! Something to cheer up an engineer! Just to put you in the picture and keep you up to date with the latest developments. A short video of a Pakistani pile driving construction technique. Notice that the pile driving only becomes effective when the extra man jumps on. 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 sq. in. 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. The foreman is the guy on the tambourine.
Posted on: Fri, 10 Oct 2014 21:08:48 +0000